Home

Point-to-point Link CP 441 Installation and

1. Power supply module PS converts the line voltage 120 230 V AC or 24 V DC into the operating voltage of 24 V and 5 V DC required to supply the S7 400 Central processor unit CPU Accessories e Memory card e Backup battery executes the user program communicates via the PROFINET or MPI interface with other CPUs or with a programming device ails ams CP 441 communication processor Interface modules communicates via the interface with one or more communication partners enable the CP 441 to be adapted to suit the communication partner R Standard cable connects the CP 441 communication processor to the communication partner D UE Programming device cable connects a CPU to a programming device PC Lz Programming device PG or PC communicates with the CPU of the S7 400 14 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Product Description 1 2 Transmission Procedure with a Point to Point Connection Software components The following table lists the software components required for establishing a point to point link with the CP 441 Table 1 4 Software components for a point to point lin
2. Figure B 2 RS232 cable CP 441 CP 544 CP 524 CPU 928B CPU 945 CPU 948 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 235 Cables B 1 RS232 interface module RS232 cables S7 CP 441 CP 521 SI CP 521 BASIC The figure below illustrates the cable for a point to point link between a CP 441 anda CP 521 SI CP 521 BASIC You require the following female male connectors for the cables e At CP 441 end 9 pin subminiature D female with screw interlock e At the communication partner 25 pin subminiature D male with screw interlock CP 441 Communication partner l l l i l Receiver 2 Sender l l l l l I I Sender 3 TxD RxD i 3 Receiver Cable type 7 LIYCY 7 x 0 14 Casing shield See a A I l i l l l Casing shield l l Figure B 3 RS232 cable CP 441 CP CP 521SI CP 521BASIC Point to point Link CP 441 Installation and Parameter Assignment 236 Manual 04 2012 A5E00405449 03 Cables RS232 cables S7 CP 441 CP 523 The figure below illustrates the cable for a point to point link between a CP 441 anda CP 523 You require the following female male connectors for the cables B 1 RS232 interface module At CP 441 end 9 pin subminiature D female with screw interlock At the communication partner 25 pin subminiature D male with screw interlock Communication partner
3. is merged with the next frame if a new frame is received before the character delay time expires Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 63 Basic Principles of Serial Data Transmission 2 6 Data Transmission with the ASCII Driver The figure below illustrates a receive operation with the end criterion delimiter Waiting for character Character arrived Character received with end control and lt gt character delay time Error when receiving Message fram buffered Message frame complete Waiting for valid end code Message frame entered in receive buffer End criterion for message frame identified error entry follows Character delay time expired Enter error in SYSTAT error signaling area Figure 2 22 Sequence of receive operation with delimiter end criterion Point to point Link CP 441 Installation and Parameter Assignment 64 Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 6 Data Transmission with the ASCII Driver End Criterion Fixed Message Frame Length When data is received the end of the frame is recognized when the configured number of characters has arrived The received data is accepted from the CPU If the character delay time expires before the configured number of characters has been reached
4. A protocol defines the following e Operating mode Half duplex or full duplex operation e Initiative Specifies which communication partners can initiate the transmission and under what conditions e Control characters Specifies the control characters to be used for data transmission e Character frame Specifies which character frames are to be used for data transmission e Data backup Specifies the data backup procedure to be used e Character delay time Specifies the time period within which an incoming character must be received e The data transmission rate Specified in bps Procedure This is the specific process according to which the data is transmitted Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 27 Basic Principles of Serial Data Transmission 2 2 Transmission Procedure with a Point to Point Connection ISO 7 Layer Reference Model The reference model defines the external behavior of the communication partners Each protocol layer except for the lowest one is embedded in the next one down The individual layers are as follows 1 Physical layer Physical conditions for data transmission e g transmission medium data transmission rate 2 Data link layer Security procedure for the transmission Access modes 3 Network layer Network connections Specifies the addresses for communication between two partners 4 Transport layer E
5. jot I 1 l Lot LY l l l l Receiver 2 1 i RxD TxD n11 Sender my lt rm toot ty I I I o l i l i t j an ae i Sender 3 lA TxD RxD 5 Receiver NG l y wa gt l I i i I I I ryt La i 7 RTS CTS 9 gt i I al ICTS RTS 13 Si i X lt m l l ic i l l i 6 I i DSR DTRI 115 2 ae a ee l l i l ei iDTR DSR i I7 A J met gt T l i i i i I B i 5 1 1 IGND GND 2 21 23 EP TL I i l l W I I I Tr 7 I p Sa oo Cable type n i _Gasigshied j uyev7xod Sasmoshed Figure B 4 RS232 cable CP 441 CP 523 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 eee ee EEEE 237 Cables B 1 RS232 interface module RS232 cable S7 CP 441 IBM Proprinter PT 88 DR 230 The figure below illustrates the cable for a point to point link between a CP 441 and an IBM Proprinter with a serial interface PT 88 or IBM compatible printer You require the following female male connectors for the cable e At CP 441 end 9 pin subminiature female e With IBM Proprinter 25 pin sub D male connector CP 441 Printer fe A A Ha l L p I l I I fy Receiver 1 of i Coi Sender l 1 I 2 iss f RxD TxD Be i lt l I I I l l l on l l I i opa
6. Removing the CP 441 110 To remove the communication processor from the rack proceed as follows 1 Undo the screws at the top and bottom of the module 2 Tilt the module upward and remove it 3 Replace the filler panel over the empty slot Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Mounting the CP 441 4 3 Installing and Removing the Interface Submodules of the CP 441 4 3 Installing and Removing the Interface Submodules of the CP 441 Introduction When installing and removing the interface modules of the CP 441 you must observe certain rules caution Before installing removing the interface module unplug the power supply module or dismount the CP 441 from the rack otherwise the interface module could be permanently damaged Note It is absolutely necessary to apply the shield of the connected plug in cable to a shield rail for reasons of interference suppression Only then can the relevant EMC electromagnetic compatibility standards be complied with Combination options CP with interface module NOTICE For CP 441 up to order number 6ES7 441 xAA04 0AE0 IF 963 interface modules with order number 6ES7 963 xAA00 0AA0 are used For CP 441 as of order number 6ES7 441 xAA05 0AE0 the IF 963 interface modules with order number 6ES7 963 xAA10 OAAO must be used Installation sequence To install an interface module in t
7. Result The Configuring Connections dialog displays the Local ID Hexadecimal of the connection that you have added You have to specify this ID as the parameter ID at the system function block in the user program of your CPU in the SIMATIC 400 station 1 Note If your connection partner is another SIMATIC 400 station with a CP 441 you have to configure a connection on your partner station as well in order to enable a point to point connection between the two CPUs and the local IDs may be different Please note that you cannot configure more than 8 connections for each interface of the CP 441 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 125 Configuring and Assigning Parameters for the CP 441 5 7 Procedure in the Properties PtP Connection dialog 5 7 Procedure in the Properties PtP Connection dialog 5 7 1 Properties PtP Connection dialog procedures for the ASCII driver printer driver and 3964 R procedure Properties PtP Connection dialog In addition to making the entry in the connection table you also have to set specific properties for each point to point connection If a point to point connection consists of two partial connections you have to set the properties PtP connection for each partial connection Below you will find a description of how to open and set the parameters of the Properties PtP Connection dialog for the ASCI
8. The request has not yet been started or is still running 1 The request has been completed successfully ERROR BOOL Sender and Error display STATUS WORD recipient ERROR STATUS Meaning 0 0 Neither a warning nor an error 0 0 Warning STATUS provides detailed information 1 0 There is an error STATUS provides detailed information on the error Page 190 You can obtain point to point error information that goes beyond this by calling the STATUS system function block SFB 22 see section Page 195 Note The ERROR bit and STATUS remain there only until the next SFB call To display the STATUS you should therefore copy it to a free data area Note The receiving CPU determines data consistency CPU 412 413 16 bytes CPU 414 417 32 bytes For further information on data consistency refer to the reference manual to the system and standard functions To guarantee further data consistency please observe the following Sender Only access the send DB when all data have been completely transferred DONE 1 Receiver Only access the receive DB when all data are received NDR 1 Then you must inhibit the receive DB EN_R 0 until you have processed the data Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 141 Communication via System Function Blocks 6 2 Using the System Function Blocks Send and Receive Parameters The SD_i send parameters and the RD_i
9. 5 3 Multiprocessor communication Maximum number of CPUs The CP 441 as of 6ES7 441 xAA0y 0AE0 x 1 2 Y 4 5 enables communication with up to 4 CPUs in an automation system Prerequisite STEP 7 Version 4 02 or higher Note Please observe the following rules of multiprocessor communication e Data can be sent from any CPU e Inthe case of the ASCII driver and the 3964 R procedure data can only be received via one CPU since these protocols do not send any address information with the data e Inthe case of the RK512 computer link data can be received on 4 CPUs Addressing takes place with CPU numbers 1 to 4 in the header of the RK512 frame The CPU numbers automatically assigned in HW Config configuration table of STEP 7 are entered by default during connection configuration in the Connection is selected A means of RK512 CPU no field of the Object Properties dialog see section Properties PtP Connection dialog procedure with RK512 computer link Page 129 Point to point Link CP 441 Installation and Parameter Assignment 118 Manual 04 2012 A5E00405449 03 Configuring and Assigning Parameters for the CP 441 5 4 Definition 5 4 Identification data Identification data Identification data is stored on a module This information provides support for e Correcting errors in a system e Checking the system configuration e Locating hardware changes in a system Identification data can be used to id
10. 500 ms 3964R Tapt 2s W transmission attempt count Immediate return to initial state at line break BREAK Figure 2 7 Flow diagram of sending with the 3964 R procedure Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 37 Basic Principles of Serial Data Transmission 2 4 Data Transmission with the 3964 R Procedure 38 C Counter for connection attempts R Counter for retries D Default state W Waiting for character reception Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 4 Data Transmission with the 3964 R Procedure 2 4 4 Receiving data with 3964 R Process of Data Transmission when Receiving The figure below illustrates the transmission sequence when data is received with the 3964 R procedure Communication partner CP 441 Connection STX gt Start code 02H setup DLE Pos acknowledgment 10H 1st byte ist data byte 2nd byte gt 2nd data byte User data nth byte gt nth data byte DLE End code 10H Connection H ETX gt End code 03H ccc BCC 3964R only S DLE Pos acknowledgment 10H Figure 2 8 Data traffic when receiving with the 3964 R procedure Note As soon as it is ready the 3964 R procedure sends a s
11. C condensed e E expanded type e italic type e U underline Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 95 Basic Principles of Serial Data Transmission 2 8 Parameter Assignment Data of the Protocols Examples Here are some examples of message texts The variables SD_1 SD_2 in the examples must be configured at the PRINT SFB Example 1 The level 200 was reached at 17 30 hours Format string The level i was reached at Z hours Variable SD_1 Time of day Variable SD_2 State Example 2 The pressure in the chamber is falling Format string N MWS Variable SD_1 Reference to memory cell containing 17 Text no 17 The pressure in the chamber Variable SD_2 Reference to string string variable is falling The reference to the string is a symbolic address that specifies where the string is stored DB Example 3 Setting the page number to 10 Format string P Variable SD_1 10 page number 10 Point to point Link CP 441 Installation and Parameter Assignment 96 Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 8 Parameter Assignment Data of the Protocols 2 8 4 2 Conversion and control statements for printer output Introduction The output of a message text with variables and control statements e g for bold condensed expanded or italic type and underlin
12. REQ DB60 DBX812 0 Following a rising edge at the REQ R lt DB60 DBX812 1 parameter the data for a length of 50 bytes starting at data byte 5 in ID W 16 1000 f DB 10 is sent to the communication R_ID DB60 DBD820 partner DONE DB60 DBX812 2 The partner stores the data in DB ERROR DB60 DBX812 3 71 starting at data word 20 The STATUS DB60 DBW802 destination information in the R_ID is accepted once during CPU startup obit Pep eRe eA DENS 20 WORD and cannot subsequently be changed LEN DB60 DBW806 Point to point Link CP 441 Installation and Parameter Assignment 158 Manual 04 2012 A5E00405449 03 Communication via System Function Blocks 6 4 Using the system function blocks with the RK512 computer link Request Table The following table lists the data types which can be transmitted Table 6 15 Request table for Sending data with RK512 to the CP 441 communication partner using BSEND Source To Destination Parameter Assignment in the Parameter Parameter Assignment in the BSEND from Communication BSEND SFB Parameter SD_1 Assignment in BSEND SFB Parameter R_ID S7 Partner Source BSEND SFB Destination Parameter LEN Source S S DBNO S Offset Length max 450 D D DBNO D Offset TYPE byte bytes TYPE words Data block Data block DB 1 0 1 DB 1 255 0 255 Flag Data block MB Irrelevant 0 1 DB 1 255 0 255 Inputs Data block IB Irreleva
13. Table 6 9 Request Table for Sending Data with 3964 R Using BSEND and a Receive Mailbox Source BSEND To Destination Parameter Assignment in the Parameter Assignment in Specification of from S7 Communication BSEND SFB Parameter SD_1 the BSEND SFB DB in Mailbox Partner Source Parameter LEN Source S TYPE S DBNO S Offset Length max 4 KB D DB byte Data block Data block DB 1 7 0 1 7 1 Flag Data block MB Irrelevant 0 1 1 Inputs Data block IB Irrelevant 0 1 1 Outputs Data block QB Irrelevant 0 1 7 1 Counters Data block C Irrelevant 0 1 1 Timers Data block T Irrelevant 0 1 1 This value is dictated by the CPU that you use Abbreviations used in the table S TYPE source type S DBNO source data block number S Offset source start address length source length D TYPE destination type D DB destination data block D Offset destination start address Point to point Link CP 441 Installation and Parameter Assignment 150 Manual 04 2012 A5E00405449 03 Communication via System Function Blocks 6 4 Using the system function blocks with the RK512 computer link 6 4 Using the system function blocks with the RK512 computer link Overview If you are using the RK512 computer link as your transmission method you can e Send data from your S7 400 automation system to a communication ER re see sections Send data with a static destination definiti
14. 03 01H Invalid or no source destination data type Check parameters on CPU and CP and correct if Invalid area start address length necessary Invalid or no DB e g DB 0 or RK512 only Partner returns invalid parameters in ame frame header Other data type invalid or missing Check parameters on CPU and CP possibly create block See request tables for valid data types RK512 only Partner returns incorrect parameters in frame header 03 02H Area too short Check parameters on CPU and CP possibly check block area RK512 only Partner returns incorrect parameters in frame header 03 03H Area cannot be accessed Check parameters on CPU and CP Obtain the permissible start addresses and lengths from the request tables RK512 only Partner returns incorrect parameters in frame header Event Class 4 04H CP detected error in data traffic CP CPU Event no Event Text To correct or avoid errors 04 01H CP cannot accept requests overload In your user program reduce number of requests called concurrently for CP 04 02H CP cannot process request type Check if the system function blocks you have called in user program are valid for CP 04 03H Incorrect unknown or illegal data type Check program e g for incorrect parameters of SFB 04 07H An error has occurred during data transmission Check the destination frame on the CPU Check the between the CPU and the CP Data connot be received because there
15. 13 DC3 0 to 7FH Hex e At 8 data bits 0 to FFH Hex Waiting for XON after Period of time for which the 20 ms to 65530 ms 20000 ms XOFF wait time for communication processor should wait for in 10 ms increments CTS ON the XON code or for CTS ON of the communication partner when sending Time to RTS OFF Time to elapse after the transmission 0 ms to 65530 ms 10 ms before the communication processor sets the RTS line to OFF in 10 ms increments Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 83 Basic Principles of Serial Data Transmission 2 8 Parameter Assignment Data of the Protocols Parameter Description Value range Default value Data output waiting time Time that the communication processor 0 ms to 65530 ms 10 ms should wait for the communication partner in 10 ms increments to set CTS to ON after setting the RTS line to ON and before starting the transmission 1 Only for data flow control with XON XOFF 2 Depending on whether you set 7 or 8 data bits for the character frame 3 Only for data flow control with XON XOFF or RTS CTS 4 Only for automatic operation of the RS232 accompanying signals Receive buffer on CP The following table describes the parameters for the CP receive buffer Table 2 10 Receive buffer on CP ASCII driver Parameter Description Value range Default value Delete CP receive
16. Casing shield LIYCY 3 x 2 x 0 14 Casing shield i T A T B and R A R B l I l l I 1 In the case of cables longer than 50 m you must solder in a terminating resistor of 330 on the recipient side Figure B 15 X27 cable CP 441 CP 544 CP 524 CPU 928B CPU 945 CPU 948 for RS422 operation four wire mode Point to point Link CP 441 Installation and Parameter Assignment 250 Manual 04 2012 A5E00405449 03 SFB Parameters Error Messages Each system function block has a STATUS parameter for error diagnostics The STATUS message numbers always have the same meaning irrespective of which system function block is used The possible STATUS message numbers are described in section Diagnostics Messages of the System Function Blocks e System Function Blocks Page 190 SFB Parameters The following tables provides a brief description of the parameters of the system function blocks Table C 1 SFB Parameters BSEND system function block SFB 12 Parameters Type Type Meaning REQ VAR_INPUT BOOL Activates a transfer at rising edge R VAR_INPUT BOOL Activates resetting of BSEND to initial state with rising edge ID VAR_INPUT WORD Unique communication connection to a communication partner R_ID VAR_INPUT DWORD Unique block relationship in a communication connection SD_1 VAR_IN_OUT ANY Data to be sent LEN VAR_IN_OUT WORD Length of data block to be transmitted DONE VAR_OUTPUT BOOL S
17. I l i l 8 1 RxD bi f E l I l l l 2 1 20mA co i l l 4i 20mA i i 24y Lo m p t l l 9i TxD Loi i I TE l l I I I NS Sender i De Ti l TxD RxD 6 voy ee l i l Receiver Va 2 l 20 mA RxD 8 Maa C Enclosure shield Cable type LIYCY 4 x 0 14 l es E E EEE l l Cable shield l l l l Enclosure shield Figure B 10 20 mA TTY cable CP 441 CP 523 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Cables B 2 20MA TTY interface submodule 20mA TTY connecting cable S7 CP 441 CP 521 SI CP 521 BASIC IBM compatible printer The figure below illustrates the cable for a point to point link between a CP 441 anda CP 521 SI CP 521 BASIC You require the following male connectors for the cables e At CP 441 end 9 pin sub D male connector with screw locking e At the communication partner 25 pin subminiature D male with screw interlock CP 441 Communication partner Pre A eses le i 7 l 3 1 20mA TxD 18 l l 24 V Ca a ae i 1 Sender i l 5 1 I RxD TxD 1 1 21 Ue Ca 1a i i NN Receiver i i 8 1 RxD i l u m l i l 2 1 1 20mA en 4 l L C i I i l l l I fak l 4i 1 20mA i 1 24 V mo ky I l ll l 9 1 TxD rey l C l l i l D iii i I TxD RxD g l J
18. Interface module e RS232 module e 20mA TTY module e X27 RS422 485 module e 6ES7 963 1AA00 0AA0 e 6ES7 963 2AA00 0AA0 e 6ES7 963 3AA00 0AA0 Table D 2 The following is an overview of the accessories for the CP 441 6ES7 441 xAA05 0AE0 Product Order Number CP 441 1 6ES7 441 1AA05 0AE0 CP 441 2 6ES7 441 2AA05 0AE0 Interface module e RS232 module e 20mA TTY module e X27 RS422 485 module e 6ES7 963 1AA10 0OAAO e 6ES7 963 2AA10 OAAO e 6ES7 963 3AA10 0OAAO Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 255 Accessories and Order Numbers 256 Table D 3 The following is an overview of the accessories for the CP 441 Product Cable CP 441 CP 441 CP 340 Order Number RS232 e RS232 5m e RS232 10m e RS232 15m e 6ES7 902 1AB00 0AA0 e 6ES7 902 1AC00 0AA0 e 6ES7 902 1AD00 0AA0 20mA TTY e 20mATTY 5m e 20mA TTY 10m e 20mA TTY 50 m e 6ES7 902 2AB00 0AA0 e 6ES7 902 2AC00 0AA0 e 6ES7 902 2AG00 0AA0 X27 RS422 e X27 RS422 5m e X27 RS422 10m e X27 RS422 50m e 6ES7 902 3AB00 0AA0 e 6ES7 902 3AC00 0AA0 e 6ES7 902 3AG00 0AA0 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Literature on SIMATIC S7 Introduction On the following pages you will find a comprehensive overview of e Manuals that you require for configur
19. OD at this point DW Offset in words Abbreviations used in the table S DXNO extended destination data block number D Offset destination start address 166 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Communication via System Function Blocks 6 4 Using the system function blocks with the RK512 computer link 6 4 5 Sending data with RK512 to a communication partner with dynamic destination definition Transmission sequence The figure below illustrates how data is sent to a communication partner with dynamically modifiable destination definition using RK512 Your programmable controller Communication partner active S7 400 i No SFB rogrammin nse EI en protoco Figure 6 3 Sending data to a communication partner with dynamically modifiable destination definition with the RK512 computer link Sending data to the communication partner with RK512 What To Do To send data to a communication partner proceed as follows On Your Programmable Controller In the S7 user program of the CPU you must program the PUT system function block SFB 15 For the SD parameter ANY data type you specify the data you want to send to the partner destination Only even numbers a maximum of 450 bytes can be specified as the offset for the data types DB C and T In the case of the data types MB IB and QB the maximum offset is 255 bytes Examp
20. RTS CTS l 8 Uo gt in l l l l l l 8 CTS RTS 7 lt rC I l l l 6i DSR DTR 4 D GO m I lt I a I I l 4 DTR DSR 6 m gt t m toy i l l I i i 51s GND GND 5 pos see cacy l Ea l I 1 I I i l l l i l I l l i Casing shield Cable type Casing shield l l LIYCY 7 x 0 14 Figure B 14 RS232 cable CP 441 CP 441 CP 340 The cable is available under the order number 6ES7 902 1 Point to point Link CP 441 Installation and Parameter Assignment 234 Manual 04 2012 A5E00405449 03 Cables B 1 RS232 interface module RS232 cables S7 CP 441 CP 544 CP 524 CPU 928B CPU 945 CPU 948 The figure below illustrates the cable for a point to point link between a CP 441 anda CP 544 CP 524 CPU 928B CPU 945 or CPU 948 You require the following female male connectors for the cables e At CP 441 end 9 pin subminiature D female with screw interlock e At the communication partner 25 pin subminiature D male with slide latch CP 441 Communication partner ee ee a l A A E ee I pi 14 I an E I l Receiver l l Sender l I l l Il l 2 i 1 RxD TxDi i 1 J i 17 l i l i i poa I l l l l l l I l l f l l I l l Sender i l f Receiver l o n ys n A ae Cable type Casing shield LIYCY 7x0 14 la care te case eee ca ental ee es cee a epee eee
21. and the STATUS system function block works with the DB 22 data block as the instance DB clipboard The same connection ID is to be entered at the appropriate input parameters for the PRINT SFB and the associated STATUS SFB in the program since the STATUS SFB works ona connection related basis The PRINT request is supplied with data from DB 146 DB 160 and DB 165 In FB 50 the PRINT SFB and the STATUS SFB are initialized by means of a one off call with the signal 0 at the REQ input parameter Description of the Printer Output Program 228 The print request is sent to the printer when a signal state change from 0 to 1 is detected at the REQ control parameter In the event of successful completion of the request the DONE output parameter is set to the signal 1 at the PRINT SFB In the event of an error the ERROR output parameter is set to the signal 1 instead In the program the REQ control input is reset to 0 if one of these signals is positive In the next cycle the DONE parameter is set to 0 The REQ input thus becomes 1 and the requested signal state change from 0 to 1 results in data transfer to the printer In addition in the event of an error the STATUS system function block SFB 22 is called with DB 22 as the instance DB in order to obtain detailed information on the cause of the error The ERROR output parameter of the PRINT SFB serves as the trigger for the STATUS SFB In the event of a signa
22. the receive operation is terminated An error message is issued and the frame fragment is discarded Note the following if the frame length of the received characters does not match the configured fixed frame length e Message frame length of received characters greater than configured fixed frame length All characters received after the parametered fixed frame length is reached is discarded if the character delay time CDT expires at the end of the frame is merged with the next frame if a new frame is received before the character delay time expires e Message frame length of received characters less than parametered fixed frame length The frame is discarded if the character delay time CDT expires at the end of the frame is merged with the next frame if a new frame is received before the character delay time expires Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 65 Basic Principles of Serial Data Transmission 2 6 Data Transmission with the ASCII Driver The figure below illustrates a receive operation with the end criterion fixed frame length Waiting for character no 2 T 2 Character e arrived oO 5 xo bt Character received s 2 with length control lt g and character S g delay time D p 2 Message Error when receiving 8 2 frame E complet
23. 255 Timers Extended data block T Irrelevant 0 1 DX 3 255 0 255 This value is dictated by the CPU that you use Abbreviations used in the table S TYPE source type S DBNO source data block number S Offset source start address length source length D TYPE destination type D DBNO destination data block number D Offset destination start address Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 165 Communication via System Function Blocks 6 4 Using the system function blocks with the RK512 computer link Specifications in the frame header of the RK512 protocol The following table shows the specifications in the RK512 frame header Data destination DX Table 6 21 Specifications in the frame header of the RK512 protocol Sending data to an S5 communication partner or third party device with RK512 data destination DX Source To Destination S5 Frame header BSEND from 7 Communication Partner or Third party Device Bytes 3 4 Bytes 5 6 Bytes 7 8 Command D DXNO D Offset Number in mode Data block Extended data block OD DX DW Words Flag Extended data block OD DX DW Bytes Inputs Extended data block OD DX DW Bytes Outputs Extended data block OD DX DW Bytes Counter Extended data block OD DX DW Words Timers Extended data block OD DX DW Words The source information is not transferred to the CP so the CP always enters the ID for DB
24. 4 Error in send area pointers SD_i regarding data length or data type 1 8 Access error at the partner CPU 1 10 Access to local user memory not possible for example access to deleted DB 1 12 The SFB call e specified an instance DB which does not belong to SFB 15 e specified a global DB instead of an instance DB e did not have an Instance DB programming device load a new instance DB 1 20 Insufficient main memory Error Information for SFB 16 The table contains all the SFB 16 specific error information that can be output in the ERROR and STATUS parameters Table 8 6 Error Information for SFB 16 PRINT ERROR STATUS Description decimal 0 11 Warning New request ineffective because previous request not yet completed 1 1 Communication problems for example e Connection description not loaded local or remote e Connection interrupted e g cable CPU off 1 2 Negative acknowledgment from printer The function cannot be executed 1 3 PRN_NR is not known on the communication link identified by ID 1 4 Error in in put parameter FORMAT or in send area pointers SD_i regarding data length or data type 1 10 Access to local user memory not possible for example access to deleted DB 1 13 Error in the FORMAT in out parameter 1 20 Insufficient main memory Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 193 Diagnostics
25. 441 BRCV none receive mailbox communication partner Overwrite protection Yes No Maximum length of transmittable 4 KB 4 KB receiving CPU data RK512 Sending data Table 6 35 The following applies when sending data via the RK512 computer link Communication type CP 441 sending data to CP 441 communication partner Programming at Sender and Programming at Sender Programming at Sender Receiver Type DX Only Type DB Only System function block at CP BSEND BSEND PUT 441 System function block at CP BRCV none none 441 communication partner Overwrite protection Yes No No Maximum length of 4 KB 450 bytes receiving 450 bytes transmittable data CPU Dynamically changeable No No Yes destination definition The receiving CP 441 restricts the maximum length of transmittable data If you use a different communication partner you can transfer up to 4 kilobytes Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 183 Communication via System Function Blocks 6 7 Summary RK512 Fetching data Table 6 36 The following applies when fetching data via the RK512 computer link Communication type CP 441 Sending Data to CP 441 Communication Partner System function block at CP 441 GET System function block at CP 441 communication partner none Overwrite protection No Maximum length of transmittable data 450 byt
26. 441 communication partner using PUT Source To Destination S7 Frame header PUT from S7 Communication Partner PUT Bytes 3 4 Bytes 5 6 Bytes 7 8 Command D DBNO D Offset Number in mode Data block Data block AD DB DW Words Flag Data block AD DB DW Bytes Inputs Data block AD DB DW Bytes Outputs Data block AD DB DW Bytes Counter Data block AD DB DW Words Timers Data block AD DB DW Words The source information is not transferred to the CP so the CP always enters the ID for DB AD at this point Abbreviations S DBNO destination data block number D Offset destination start address DW Offset in words Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 169 Communication via System Function Blocks 6 4 Using the system function blocks with the RK512 computer link Further Information You can find more information on data consistency in the reference manual on system functions and standard functions System Software for S7 300 400 System and Standard Functions See also Overview of the System Function Blocks Page 138 Point to point Link CP 441 Installation and Parameter Assignment 170 Manual 04 2012 A5E00405449 03 Communication via System Function Blocks 6 4 Using the system function blocks with the RK512 computer link 6 4 6 Fetching data with RK512 from a communication partner Transmission sequence Fetching da
27. 9 4 Parameterizing the CP 441 9 4 Parameterizing the CP 441 STEP 7 Once you have arranged the modules in your mounting rack you can double click the CP 441 in the configuration table to display the Properties dialog 1 Under Basic Parameters specify in the Interface entry field 1 or 2 the type of the interface module installed here 2 Choose the Parameters button in the Properties dialog Result The CP 441 Configuration Package for Point to Point Communication parameter assignment interface for assigning CP 441 protocol parameters is opened 3 Select the desired transmission protocol RK512 3964 R ASCII or Printer Result The parameter assignment interface that is available in accordance with the protocol is displayed The gray buttons allow you to open additional parameter assignment dialogs 4 Accept the default settings and return to the configuration table 5 If necessary carry out steps 1 to 4 in accordance with your configuration for the second interface of the CP 441 STEP 7 TIA Portal Once you have selected the modules in the Hardware catalog task card and arranged in your module rack all parameters of the CP 441 are displayed in the Properties tab Configure the CP 441 according to your requirements Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 221 Programming Example for System Function Blocks 9 5 Configuring the Conne
28. Basic Principles of Serial Data Transmission 2 5 Data transmission with the RK512 computer link RK512 CPU requests The figure below shows the sequences involved in the RK512 computer link when CPU requests are made CPU request initial position CPU request b CPU command frame Yy Start TRES T gt TRES Error abortion Wait for response d Response frame received More subblocks All data transferred Send continuation command frame Start TRES T gt Tres or first ait for response frame continuation received gt CPU request completed response frame Error abortion Continuation 56 response frame received 4 Response frame monitoring time dependent on transmission rate Tres 3 s 5 s 7 s 10 s Figure 2 18 Sequence for data transmission from CPU requests with RK512 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission RK512 partner requests The figure below shows the sequences involved in the RK512 computer link when partner requests are made Partner 2 5 Data transmission with the RK512 computer link request initial position frame received Send data to or get data from the AS Error Partner command l Send response
29. Basic Principles of Serial Data Transmission 2 8 Parameter Assignment Data of the Protocols Initial state of receive line The figure illustrates the wiring of the receiver at the X27 RS422 interface none R A 5V R B OV ASV R A OV R B 5V OV Figure 2 28 Wiring of the receiver at the X27 RS422 interface Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 R B R A R B R A 89 Basic Principles of Serial Data Transmission 2 8 Parameter Assignment Data of the Protocols Data flow control handshaking Handshaking controls the data flow between two communication partners Handshaking ensures that data is not lost in transmissions between devices that work at different speeds You can also send message texts with data flow control during printer output There are essentially two types of handshaking e Software handshake e g XON XOFF e Hardware handshake e g RTS CTS Data flow control is implemented as follows on the CP 441 during printer output e As soon as the CP 441 is switched by the parameter configuration to the operating mode with data flow control it sends the XON character or sets the RTS line to ON e Ifthe CP 441 receives the XOFF character or the CTS control signal is set to OFF the CP 441 interrupts the output of characters If
30. Elimination of limitations depending on the type of interface for the data transmission rate CP441 1 Additional data transmission rates 57 6 76 8 and 115 2 kbps CP441 2 Both interfaces can be operated with 115 2 kbps e Lowest character delay time at 9600 bps 2 ms e Lowest character delay time at data transmission rates 2 19 2 kbps 1 ms e The dependency of the waiting times on the data transmission rate can be set with RK512 You can find detailed information about certificates approvals and standards in the manual S7 400 Programmable Controller Module Specitications Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Preface Structure of This Manual To help you to quickly find the information you require this manual offers the following A heading indicating the contents of each section is provided in the left hand column on each page of each chapter Following the appendices a glossary defines important technical terms used in the manual Finally a comprehensive index allows quick access to information on specific subjects Additional assistance Conventions Training Center Please contact your local Siemens representative if you have any queries about the products described in this manual Find your contact partner at http www siemens de automation partner http www siemens com automation partner You can find the guide to the technical docu
31. In the block of the partner you cannot specify interprocessor communication flags because the CP itself does not support them FFH is displayed if you have not specified an interprocessor communication flag 10 Bit 0 to 3 Bit number of the interprocessor communication flag You can specify interprocessor communication flags for send requests with BSEND You cannot specify interprocessor communication flags in the block of the partner because the CP itself does not support them The protocol enters FH here if you have not specified an interprocessor communication flag Bit 4 to 7 CPU number number from 1 to 4 The CPU number 0 is supported as of STEP 7 Version 4 0 If you have not specified a CPU number but you have specified an interprocessor communication flag OH is displayed here if you specified neither a CPU number nor an interprocessor communication flag FH is shown here The letters in bytes 3 and 4 are ASCII characters The header of the continuation command frame consists of bytes 1 to 4 only Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 47 Basic Principles of Serial Data Transmission 2 5 Data transmission with the RK512 computer link Response frame Once the command frame has been transmitted the RK512 waits for a response frame from the communication partner within the monitoring time The length of the monitoring time amounts t
32. Manual 04 2012 A5E00405449 03 171 Communication via System Function Blocks 6 4 Using the system function blocks with the RK512 computer link Please note that the partner cannot recognize when you fetch data It is therefore not possible to prevent as yet unprocessed data being fetched from the partner Using the Response to a CPU Stop parameter indicate whether data should continue to be transmitted when the S7 CPU is also in STOP mode The parameter is only available for the CP 441 2 as of 6ES7 441 2AA04 0AE0 Interprocessor communication flags are not supported when linking with S5 CPs The sending and receiving CPU determines data consistency CPU 412 413 16 bytes CPU 414 417 32 bytes The weaker partner in terms of consistency determines the resulting consistency length for data transfer Further Information You can find more information on data consistency in the reference manual on system functions and standard functions System Software for S7 300 400 System and Standard Functions Note If you fetch data from a CP 441 by means of an S5 CP or a third party device you must specify the source data type in the request block S5 CP In the case of the source data type DB you must specify the corresponding number and the start address offset Interprocessor communication flags are not evaluated The connection via which the data is fetched from the S7 CPU is selected by means of the CPU number At the CP 441 Com
33. Page 18 e 20 mA TTY see section Attributes of the 20mA TTY interface submodule Page 419 e X27 RS422 485 see section Properties of the X27 RS422 485 interface module Page 20 Note The design of the interface modules for the CP 441 as of order number 6ES7 441 xAA05 0AE0 is different mechanically from earlier interface modules Base Connector for S7 Rear Panel Bus On the back panel of the CP 441 you will find the base connector for the S7 400 rear panel bus The S7 400 rear panel bus is a serial data bus via which the CP 441 communicates with the modules of the programmable controller and is supplied with the necessary voltage Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 17 Product Description 7 4 Properties of the Serial Interface 1 4 Properties of the Serial Interface Introduction Two module variants of the communication processor are available with three different interface modules for adapting to the properties of communication partners Standard Cables Siemens offers standard cables in various lengths for point to point link between the communication processor and a communication partner 1 4 1 Properties of the RS232 interface module Definition The RS232 interface is a voltage interface used for serial data transmission in compliance with the RS232 standard Properties The RS232 interface module has the following propertie
34. Product Description 1 1 Applications for the Communication Processor Supported interface module functions Different driver functions can be used depending on the interface module used Table 1 2 Functions of the CP 441 depending on the interface module used Function RS232 20mA TTY _ X27 RS422 485 RS422 RS485 3964 R procedure Yes Yes Yes No RK512 computer link Yes Yes Yes No ASCII driver Yes Yes Yes Yes e Automatic operation of the RS232 accompanying signals Yes No No No e Controlling reading the RS232 accompanying signals Yes No No No with FBs e RTS CTS data flow control Yes No No No e XON XOFF data flow control Yes Yes Yes No Printer driver Yes Yes Yes Yes e RTS CTS data flow control Yes No No No e XON XOFF data flow control Yes Yes Yes No The difference between RS422 and RS485 is defined by configuration Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 13 Product Description 7 2 Transmission Procedure with a Point to Point Connection 1 2 Transmission Procedure with a Point to Point Connection Hardware Components For a point to point link using the CP 441 you require certain hardware components Table 1 3 Hardware Components for a Point to Point Link with the CP 441 Components Function Diagram Rack provides the mechanical and electrical connections of the S7 400
35. Service and Support pages http support automation siemens com WW view de 59585200 http support automation siemens com WW view en 59585200 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Configuring and Assigning Parameters for the CP 441 5 1 Parameters for the communications protocols 5 1 Parameters for the communications protocols Introduction Once you have entered the CP in the configuration table you must supply its interface with parameters In the case of the printer driver you can also configure message texts for printer output This process is known as Parameter Assignment Parameter assignment The expression Parameter Assignment is used in the following to describe the setting of interface specific parameters and the configuration of message texts This is done using the CP 441 Configuration Package for Point to Point Communication parameter assignment interface You start the parameter assignment interface by double clicking the order number CP 441 in the configuration table or by selecting the CP 441 and then calling the Edit gt Object Properties menu command You do not have to specify any settings for the CP 441 on the General and Addresses tabs Select the Basic parameters tab and enter the interface number and the type of interface Click on the Parameters button to go to protocol selection Set the protocol and double click the
36. You can change the suggested ID if you have programmed the SFBs with certain IDs Communication direction Specify the direction in which communication is to take place by selecting the appropriate option see also the sections entitled One Connection Configured and Several Connections Configured Interface Interface The CP 441 2 has two channels the interfaces IF1 and IF2 via which the point to point links can be set up Select the channel used for the configured connection Protocol Various protocols can be used to send data via point to point links You specified the protocol when you configured the module Connection is selected by means of RK512 CPU no e RK512 CPU no These fields are relevant only to the RK512 computer link These fields are grayed out Note If your communication partner is a CP 441 you also have to set the PtP connection properties for the partial connection in the partner station One connection configured If you have only configured one connection via an interface you do not have to specify any settings in the Properties PtP Connection dialog Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 127 Configuring and Assigning Parameters for the CP 441 5 7 Procedure in the Properties PtP Connection dialog Several connections configured 128 Up to eight connections can go via a single int
37. a message text This means that you can print several messages in a single line in order for example to display more variables in a line The x control statement is appended at the end of the format string Example The level 200 was reached at 17 30 hours Format string The level i was reached at Z hours x Variable SD_1 Time of day Variable SD_2 State Note Note that when you use the x control instruction the new line always begins without a left margin Notes on Control Statements Please note the following in relation to control statements e If the deactivation of an effect is specified without it previously having been activated or if the output device is incapable of producing the effect the control statement is ignored e The and characters required to define the format string can be printed by means of the control statement e Undefined or incorrect control statements are not executed Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 105 Basic Principles of Serial Data Transmission 2 8 Parameter Assignment Data of the Protocols Point to point Link CP 441 Installation and Parameter Assignment 106 Manual 04 2012 A5E00405449 03 Commissioning the CP 441 3 Step sequence Before starting up the CP 441 you will need to perform the following operations in the order given 1 Install the communication processor 2 Configuring th
38. alert symbol indicates that minor personal injury can result if proper precautions are not taken CAUTION without a safety alert symbol indicates that property damage can result if proper precautions are not taken NOTICE indicates that an unintended result or situation can occur if the relevant information is not taken into account If more than one degree of danger is present the warning notice representing the highest degree of danger will be used A notice warning of injury to persons with a safety alert symbol may also include a warning relating to property damage Qualified Personnel The product system described in this documentation may be operated only by personnel qualified for the specific task in accordance with the relevant documentation in particular its warning notices and safety instructions Qualified personnel are those who based on their training and experience are capable of identifying risks and avoiding potential hazards when working with these products systems Proper use of Siemens products Trademarks Note the following WARNING Siemens products may only be used for the applications described in the catalog and in the relevant technical documentation If products and components from other manufacturers are used these must be recommended or approved by Siemens Proper transport storage installation assembly commissioning operation and maintenance are required to ensu
39. and IF_1 interface No other settings are necessary 5 Click OK to return to the Configure Network dialog Result The Configure Network dialog displays the connection that you have added and the Local ID Hexadecimal You have to specify this ID as the parameter ID at the BSEND system function block in the user program of your CPU Point to point Link CP 441 Installation and Parameter Assignment 222 Manual 04 2012 A5E00405449 03 Programming Example for System Function Blocks 9 6 Programming an ASCII 3964 R User Program Entering the connection for interface 2 in the connection table Proceed as follows 1 After returning to the Configuring Network dialog insert the connection in the connection table by choosing Insert gt Connection 2 In the New Connection dialog select Unspecified as the communication partner and enter S7 PTP Connection as the connection type Then click OK to exit the dialog 3 Set the object properties of the connection Inthe Object Properties dialog set the specific properties of the connection for interface 2 Inthe Object Properties dialog change the name of the communication partner from Unspecified to an appropriate name and select the PTP CP Rack Slot and IF_2 interface No other settings are necessary 4 Click OK to return to the Configure Network dialog Result The Configure Network dialog displays the connection that you have added and the Local ID Hexadecimal You have
40. communication partner Parameter assignment data of the RK512 computer link The parameters are identical to those of the 3964 R procedure because the 3964 R procedure is a subset of the RK512 computer link in the ISO 7 layer reference model see section Parameter assignment data of the 3964 R procedure Page 74 Note Exception The number of data bits per character is set permanently to 8 with the RK512 computer link The parameters of the transport layer layer 4 must be specified in the system function blocks SFB used 2 8 3 Parameter assignment data of the ASCII driver Introduction Using the parameter assignment data of the ASCII driver you can adjust the communication processor to suit the properties of the communication partner Parameter Assignment Data of the ASCII Driver For the CP 441 Configuration Package for Point to Point Communication parameter assignment interface specify the parameters for the physical layer layer 1 of the ASCII driver You will find a detailed description of the parameters below X27 RS422 485 interface module Please note the following with reference to the X27 RS422 485 interface module Note When the X27 RS422 485 interface module is used the ASCII driver can be used in four wire mode RS422 and two wire mode RS485 During parameter assignment you specify the type of interface RS422 or RS485 Point to point Link CP 441 Installation and Parameter Assignme
41. containing the message text number for send parameters SD_1 to SD_4 of the PRINT system function block Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 93 Basic Principles of Serial Data Transmission 2 8 Parameter Assignment Data of the Protocols Performance features Conditions for configuring message texts variables Max size of the text SDB 55 KB Max length of a message text without variables 150 characters Max length of a message text with variables displayed 4000 characters Max number of variables per message text 4 3 message text number Max number of message text numbers 4000 0 to 3999 The net amount of memory space available for the message texts is dependent on the smallest and largest message text number actually used You can calculate the net memory space available for message texts as follows Net memory space for message texts effectively 56 400 2 x the largest message text number used the smallest message text number used 1 Up to 4 variables 3 a message text number can be displayed in a message text The following can be displayed as variables values calculated by the user program e g levels date and time strings string variables or other message texts The variables are configured as the send parameters SD_1 to SD_4 of the PRINT system function block A conversion statement must be specified in the configured message text
42. driver e With the first delivery stage of the CP 441 6ES7 441 2AA05 0AE0 only the special drivers for Modbus master RTU Modbus slave RTU and Data Highway DF 1 are supported This limitation will no longer apply with a future delivery stage FW version Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 121 Configuring and Assigning Parameters for the CP 441 5 6 Connection Contiguration 5 6 Introduction Connection Configuration The CP 441 represents the link between an S7 CPU and a communication partner linked by means of a point to point connection The S7 connections are converted to the address mechanisms of the selected transmission protocol on the CP 441 When you configure a connection you specify the route the connection takes from the S7 CPU to the CP 441 via the serial link to the communication partner As a result of connection configuration you obtain the connection ID that you have to specify as the parameter ID in your user program when you call a system function block in order to exchange data with the corresponding communication partner Simplified Connection Configuration STEP 7 version 4 0 and later also allows you to carry out simplified connection configuration In this case you do not need to create any PtP subnets or network the interface To carry out simplified connection configuration you need to do two things 1 Enter the connection i
43. free data exchange with line lengths gt 50 m you must solder in a terminating resistance of approx 330 Q on the receiver side Figure B 13 X27 cable CP 441 CP 441 CP 340 for RS422 operation four wire mode The cable is available under the order number 6ES7 902 3 Note This cable type can be used in the following lengths for the CP 441 as communication partner Max Max Max Max 1200 m at 19 200 bps 500 m at 38 400 bps 250 m at 76 800 bps 200 m at 115 200 bps Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Cables B 3 X27 RS422 485 interface module X 27 connecting cables S7 CP 441 CP 441 CP 340 The figure below illustrates the cable for a point to point link between a CP 441 anda CP 441 CP 340 for RS485 operation You require the following male connectors for the cables e At CP 441 end 15 pin sub D male connector with screw locking e At the communication partner 15 pin sub D male connector with screw locking CP 441 Communication partner 2 IT A T A T B T B Sending stations Sending stations 1 1 1 el RAe RA o R B R B l Receiver l GND GND l t4 anes at j Cable type Enclosure shield LIYCY 3x2x0 14 R A R B l twisted pair 1 For cable lengths of more than 50 m you have to solder in a terminating resistor of ca 330 Q on the re
44. icon for the transmission protocol an envelope This takes you to the dialog for setting the protocol specific parameters Response to a CPU Stop Enter the basic parameters in the Attributes CP 441 hardware dialog in STEP 7 Open the dialog by double clicking the CP 441 in the STEP 7 configuration table The following table contains a description of the basic parameters Table 5 2 Basic Parameter Parameter Description Value range Default value Interrupt Selection The CP 441 can generate a e Yes No diagnostics alarm for more serious oN errors 7 Response toa CPU This parameter influences CP 441 e Continue Work Continue Work Stop access to local S7 data areas during e STOP a CPU stop The following section contains more detailed information about this Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 115 Configuring and Assigning Parameters for the CP 441 5 1 Parameters for the communications protocols The Response to a CPU Stop parameter is only available for the CP 441 2 as of 6ES7 441 2AA04 0AE0 It influences CP 441 access to local S7 data areas during a CPU stop when using the RK512 protocol and the loadable Modbus slave driver as follows e The changes only affect remote requests e Behavior when using the RK512 protocol When a SEND or FETCH request is received remotely that is when attempting to write to or read from local SI
45. is mapped e 7 8 Point to point Link CP 441 Installation and Parameter Assignment 82 Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 8 Parameter Assignment Data of the Protocols Parameter Description Value range Default value Stop bits During transmission stop bits are appended to every e 1 1 character to be sent indicating the end of the character 2 Parity A sequence of information bits can be extended to e None Even include another bit the parity bit The addition of its Odd value 0 or 1 brings the value of all the bits up to a defined status This improves data integrity e Even A parity of none means that no parity bit is transmitted Data flow control The table below contains descriptions of the parameters for data flow control Data flow control is not possible with the RS485 interface Flow control with RTS CTS and automatic operation of V24 signals is only supported when using the RS232 interface module Table 2 9 Data flow control ASCII driver Parameter Description Value range Default value Data flow control Defines which data flow control procedure e None None Peso e XON XOFF e RTS CTS e Automat operation of the V24 signals XON character Code for XON character e At 7 data bits 11 DC1 0 to 7FH Hex e At 8 data bits 0 to FFH Hex XOFF character 1 Code for XOFF character e At7 data bits2
46. is no access to the CPU destination frame or the CPU destination frame does not exist or is too short Writing data to the CPU destination frame or reading data from the CPU source frame during a CPU stop when assigning parameters is not permitted parameter assignment for Response to a CPU Stop 198 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Diagnostics Functions of the CP 441 8 3 Diagnostics via the error signaling area SYSTAT Event Class 4 04H CP detected error in data traffic CP CPU Event no 04 08H Event Text e Only for 3964R and ASCII drivers e A temporary error has occurred during data transmission between the CPU and the CP receive The request is queued for repetition because the CPU is temporarily overloaded or the receive block BRCV is requested too infrequently or the receive block has been temporarily blocked To correct or avoid errors e Reduce the number of communication requests Call the receive block more often Check whether the receive block has been blocked too long 04 09H e Only for 3964R and ASCII drivers e An error has occurred during data transmission between the CPU and the CP Data reception is not possible After multiple attempts see 04 07H the request has canceled after 10 seconds because the receive block BRCV could not be called or is blocked e Check whether the receive b
47. is possible for the 20mA TTY interface e 1200 module e 2400 e 4800 e 9600 e 19200 e 38400 e 57600 e 76800 e 115200 Start bit During transmission a start bit is prefixed to each character to be sent 1 fixed value Data bits Number of bits onto which a character is mapped e 7 8 e 8 Stop bits During transmission stop bits are appended to every character to be e 1 1 sent indicating the end of the character e 2 Parity A sequence of information bits can be extended to include another bit e None Even the parity bit The addition of its value 0 or 1 brings the value of all e Odd the bits up to a defined status This improves data integrity A parity of none means that no parity bit is sent e Even X27 RS422 interface The table below contains descriptions of the parameters for the X27 RS422 interface module RS485 operation is not possible in conjunction with the printer Table 2 13 X27 RS422 interface module printer Parameter Description Value range Default value Initial state of None This setting only makes sense with bus capable None R A 5V R B OV receive line special drivers R A 5V R B OV Break detection is possible with this R A 5V R B OV initial state R A OV R B 5V Break detection is not possible with R A OV R B 5V this initial state Point to point Link CP 441 Installation and Parameter Assignment 88 Manual 04 2012 A5E00405449 03
48. of a send operation Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 59 Basic Principles of Serial Data Transmission 2 6 Data Transmission with the ASCII Driver Note The amount transmitted data can deviate from the length specified in the LEN parameter when you Send with delimiter see above Point to point Link CP 441 Installation and Parameter Assignment 60 Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 6 Data Transmission with the ASCII Driver 2 6 2 Receiving Data with the ASCII Driver Selectable End Criteria For data transmission using the ASCII driver you can choose between three different end criteria The end criterion defines when a complete frame is received The possible end criteria are as follows e After expiration of character delay time The frame has neither a fixed length nor a defined delimiter the end of the message is defined by a pause on the line expiration of character delay time e On receipt of delimiter s The end of the frame is marked by one or two defined delimiters e On receipt of fixed number of characters The length of the receive frames is always identical Code Transparency The code transparency of the procedure depends on the choice of the configured end criterion and data flow control e With one or two delimiters not code transparent e When end criterion is character delay
49. receive parameters are of the ANY data type but no bit fields can be used See the CP 441 ANY demo project for instructions on how to change the send and receive parameters of the ANY data type at runtime The demo project is in the Examples STEP 7 catalog under CP 441 If you do not use all the send and receive parameters with an SFB the first unused parameter must be a NIL pointer and the used parameters must come one after the other without any gaps At the first call the connection and the maximum amount of data that can be transferred via it per job is fixed The system creates a communication buffer to ensure data consistency At subsequent calls you can send receive any amount of data as long as it does not exceed that of the first call The BSEND and BRCV SFBs represent and exception to this rule You can transfer up to 64 KB per request using them The following applies to the BSEND BRCV SFBs e The number of SD_i and RD_i parameters used at the sending and receiving ends must match e The data types of SD_i and RD_i parameters at the sending and receiving ends that belong together must match e The amount of data to be sent by means of the SD_i parameter must not be greater than the area made available by the associated RD_i parameter If you break these rules this is indicated to you by means of ERROR 1 and STATUS 4 Examples of Send and Receive Parameters Access to data blocks bytes 10 1
50. reports the error number in the SYSTAT for send and receive repetitions this implies occasional disturbances in the data traffic The large number of transmission attempts compensates for this however In this case you are advised to check the transmission link for possible sources of interference because frequent repetitions reduce the user data rate and integrity of the transmission The disturbance could also be caused however by a malfunction on the part of the communication partner If the receive connection is interrupted the system program reports a BREAK status in SYSTAT No repeat is started The BREAK status in the SYSTAT is automatically reset as soon as the connection is restored on the line For every recognized transmission error lost character frame or parity error a standard number is reported regardless of whether the error was detected during sending or receiving of a data block The error is only reported however following unsuccessful repetitions If the damaged character is received when the procedure is idle the system program reports the error error number in the SYSTAT to inform you of major interference in the data transmission circuit Diagnostics via the error signaling area SYSTAT Page 195 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 45 Basic Principles of Serial Data Transmission 2 5 Data transmission with the RK512 computer link 2 5 Dat
51. see section Diagnostics via the diagnostic buffer of the CP 441 Page 211 Diagnostics interrupt See also 188 The CP 441 can trigger a diagnostics interrupt on the CPU assigned to it CP 441 provides 4 bytes of diagnostics information at the S7 400 rear panel bus This information is analyzed via the user program OB 82 or using a programming device to read from the CPU diagnostic buffer The CP 441 also writes diagnostic events which have triggered a diagnostics interrupt to its diagnostic buffer When a diagnostics interrupt event occurs the EXTF LED red lights up Subsequent Loading of Firmware Updates Page 133 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Diagnostics Functions of the CP 441 8 1 8 1 Diagnostics via the display elements of the CP 441 Display Functions Diagnostics via the display elements of the CP 441 The display elements of the CP 441 provide information on the CP 441 The following display functions are distinguished e Special displays TXDSending active lights up when the CP is sending user data via the interface RXDReceiving active lights up when the CP is sending user data via the interface e Group error displays INTF internal error EXTF external error e Interface fault LED FAULT interface error Error Messages of the Display Elements Table 8 1 The table below describes the error message
52. sets the RTS line to OFF and the DTR line to ON CP 441 ready for operation Sending and receiving of frames is only possible after the DTR line has been set to ON As long as DTR remains set to OFF no data is received via the RS232 interface A send job is canceled and a corresponding error message is generated e When a send request is made RTS is set to ON and the configured data output waiting time starts When the data output time elapses and CTS ON the data is sent via the RS232 interface e f the CTS line is not set to ON within the data output time so that data can be sent or if CTS changes to OFF during transmission the send request is aborted and an error message generated e After the data is sent the RTS line is set to OFF after the configured time to RTS OFF has elapsed The CP does not wait for CTS to change to OFF e tis always possible to receive data via the RS232 interface If the receive buffer of the CP 441 threatens to overflow the CP 441 does not respond e A send request or data receipt is aborted with an error message if DSR changes from ON to OFF The message DSR OFF automatic operation of V24 signals is entered in the SYSTAT error message area of the CP 441 Note When automatic operation of the RS232 accompanying signals is configured neither RTS CTS data flow control nor RTS and DTR control by means of the V24_SET FB are possible The time to RTS OFF must be set in the parameter assignm
53. that the volume of data consisting of format string and variables that can be transferred is limited to 400 bytes Note that if changes are made subsequently to the format string you cannot enter them in the string under Initial value instead you have to select the data view under View and enter the changed format string under Initial value Note that no string can be transferred in the case of the C character representation type Use the S representation type for strings Note that you cannot specify the string directly at the SD_i parameter in the case of the S string representation type As in the case of the format string you have to store the string in a data block and address it symbolically at the SD_i parameter Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Communication via System Function Blocks 6 7 Summary 6 7 Summary Overview The tables below summarize the following information on the protocols e The possible communication types e The system function blocks used e Whether or not overwrite protection is possible and e The maximum length of transmittable data ASCII Driver and 3964 R Table 6 34 The following applies for the 3964 R procedure Communication type CP 441 sending data to CP 441 communication partner Programming at Sender and Receiver Programming at Sender Only System function block at CP 441 BSEND BSEND System function block at CP
54. the body of the text header or footer You yourself must ensure that a line is not too long for the printer Lines per page with Number of lines to be printed on each e 1to 255 50 header and footer page The number of printed lines is e 0 continuous printing determined on the basis of the separators output which means that all header and footer lines must be included in the count Separators line end Characters concluding text header and e CR CRLF footer lines carriage return carriage return and The output text header and footer must line feed contain the defined separator If the a header does not contain a separator the line feed text begins right at the top of the page e CRLF Header lines Footer lines Text for up to max 2 header and footer lines a header or footer line is output when the entry field in the parameter assignment software contains a text or at least a blank If a text is specified only for the 2nd header or footer line the 1st header or footer line is automatically padded with a blank and printed A blank line is output before and after the headers footers ASCII characters text P conversion statement for outputting page numbers max 60 characters 92 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 8 Parameter Assignment Data of the Protocols Character se
55. to specify this ID as the parameter ID at the BRCV system function block in the user program of your CPU 9 6 Programming an ASCII 3964 R User Program Data Transmission with the ASCII 3964 R Procedure If you intend to transfer data using the ASCII 3964 R protocol program example CP441 ASCII Send Recv you need only make the following changes e When parameterizing you must use the parameter dialogs for the ASCII 3964 R protocol e For data transmission the block pair BSEND and BRCV is also used in the user program Any R_ID can be used for BSEND but only R_ID 0 can be used for BRCV Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 223 Programming Example for System Function Blocks 9 7 Programming an RK512 user program 9 7 9 7 1 General Programming an RK512 user program Program CP 441 RK512 Send Recv In OB 1 the blocks FC21 and FC 23 are called cyclically FC21 for sending data SFB BSEND and FC 23 for receiving data SFB BRCV In the example the system function blocks BSEND and BRCV work with the data blocks DB 12 and DB 13 as instance DBs and with DB 42 and DB 43 as send and receive DBs respectively In the example the system function blocks are parameterized partly via constants and partly via symbolically addressed actual operands Connection_ID 1000 hexadecimal is entered for the BSEND and the associated STATUS Connection_ID 1001 hexadecima
56. type Description Permitted values comment REQ VAR_INPUT BOOL Activates a transfer at rising edge ID VAR_INPUT WORD Unique communication connection to a communication partner NDR VAR_OUTPUT BOOL Rising edge indicates that new receive data is available to the user program ERROR VAR_OUTPUT BOOL Rising edge indicates error STATUS VAR_OUTPUT WORD Contains detailed error message or warning DTR_OUT OUTPUT BOOL Data terminal ready CP 441 output CP 441 ready DSR_IN OUTPUT BOOL Data set ready CP 441 input Communication partner ready RTS_OUT OUTPUT BOOL Request to send CP 441 output CP 441 ready to send CTS_IN OUTPUT BOOL Clear to send CP 441 input Communication partner can receive data from the CP 441 response to RTS ON of the CP 441 DCD_IN OUTPUT BOOL Data Carrier detect CP 441 input receive signal level RI_LIN OUTPUT BOOL Ring Indicator CP 441 input Indication of incoming call Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 177 Communication via System Function Blocks 6 5 Using the System Function Blocks with the ASCII Driver Example Table 6 30 Example of Calling the 5 V24_STAT FB STL CALL FB 5 DB55 REQ DB30 DBX10 0 ID WH16 1000 NDR DB30 DBX10 1 ERROR DB30 DBX10 2 STATUS DB30 DBW20 DTR_OU DB30 DBX30 0 DSR_IN DB30 DBX30 1 RTS OU DB3
57. which an update is available with the selected firmware file 5 Optional Select the Activate firmware after update check box to automatically reset the module after loading and to start the new firmware 6 Click the Start update button If the selected file can be interpreted by the module it is loaded to the module If this requires changing the operating mode of the CPU you are prompted by dialog boxes to do this Loading firmware in HW Config valid as of order number 6ES7 441 xAA05 0AE0 Follow the steps below 1 Switch the CPU to STOP mode 2 Open HW Config and select the required CP 441 module 3 Select the menu command PLC gt Update Firmware The remaining procedure is described in the online help If the update is successful you receive a confirmation message and the new firmware is activated immediately Loading firmware using the parameter assignment interface of the CP 441 You send the firmware update to the CP 441 using the CP 441 Configuration Package for Point to Point Communication parameter assignment interface Follow the steps below 1 Switch the CPU to STOP mode 2 Start the parameter assignment interface In SIMATIC Manager File gt Open gt Project gt Open HW Config gt double click CP 441 gt select the Parameters button 3 Select the menu command Options gt Firmware Update Result If a connection can be established to the CP 441 the current module firmware status is displaye
58. with the 3964R only the block checksum BCC as the end identifier and waits for an acknowledgment code If the communication partner sends the DLE code within the acknowledgment delay time the data block has been received without errors If the communication partner responds with NAK any other code except DLE or a damaged code or if the acknowledgment delay time expires without a response the procedure starts to send the data again with the connection setup STX After the defined number of attempts to send the data block the procedure stops trying and sends an NAK to the communication partner The CP 441 reports the error in the SYSTAT error signaling area Point to point Link CP 441 Installation and Parameter Assignment 36 Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 4 Data Transmission with the 3964 R Procedure Sending with the 3964 R Procedure The figure below illustrates sending with the 3964 R procedure Intention to send s C Send STX Start Tapt x 1 T gt TaDT character except DLE STX or invalid W 1 High priority Wait for DLE acknowledg Low priority Receipt not Send block permitted poss duplicate DLE Send NAK gt Send DLE Zm 3964R 3964 Send BCC q Start Tapt T gt Taot character except DLE or invalid acknowledg DLE Sendileted BCC only with 3964R x setup attempt count Tapt
59. www siemens com automation service amp support There you will find e The newsletter which provides the latest information on your products e The documents you require using our Service amp Support search engine e A forum where users and specialists exchange information worldwide e Your local service partner for Automation amp Drives in our contact database e Information about on site service repairs and spare parts And much more is available under Services Point to point Link CP 441 Installation and Parameter Assignment 6 Manual 04 2012 A5E00405449 03 Table of contents PROTACS oes cick e e r E cee eeandscuventzeceeatheeiusadevessaniitserscceicessuatieat E lances 3 1 Product DESH PUM nesans a reee Naa ea a Ea PENTE 1 1 Applications for the Communication Processor ccccccceeeeeeeececeeeeeeesecaecaeeeeeeesesecnnaeeaeeeeeess 1 2 Transmission Procedure with a Point to Point Connection ceceeeecceceeeeeeeeeeeeeaeeeeeeeeeeeees 1 3 Structure of the CP 4AT ornina teesuscncaian sau aueaeeaduadansseavanvnodiedaaceeataannetitarers 1 4 Properties of the Serial Interface ccecccccccceceeeeee cee eeeeceeeee eee eaaeaeceeeeeseseeeaeaeeeeeeeseeeesaneeeeeeey 1 4 1 Properties of the RS232 interface module cece eeceesece cece ee eeeeeeeneaeeeeeeeeeeecacaeeeeeeeeeseesiaeeneess 1 4 2 Attributes of the 20mA TTY interface submodule cece ceeeeeeeeee cece ee eeeecenca
60. you want to receive data from your communication partner the partner must specify DX 33 21 hexadecimal as the destination address In this way BRCV is referenced with R_ID 21 hexadecimal in FC 23 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 225 Programming Example for System Function Blocks 9 7 Programming an RK512 user program 9 7 2 Blocks Used in the Sample Program Blocks Used The table below shows the blocks used for the sample program Prerequisite All symbolic designations have already been declared in the symbol table Table 9 1 Blocks Used in the Sample Program Block Symbol Description OB 1 CYCLE Cyclic program processing OB 100 RESTART Start up OB for restart FC 21 SEND FC with call and analysis of BSEND SFB FC 23 RECEIVE FC with call and analysis of BRCV SFB DB 12 SEND IDB Instance DB for BSEND SFB DB 13 RCV IDB Instance DB for BRCV SFB DB 22 STATUS IDB BSEND Instance DB for STATUS SFB DB 23 STATUS IDB RECEIVE Instance DB for STATUS SFB DB 42 SEND SRC DB Send data block source DB 43 RCV DST DB Receive data block destination DB 40 SEND WORK DB Work DB for BSEND DB 41 RCV WORK DB Work DB for BRCV DB 45 STATUS WORK DB BSEND Work DB for STATUS DB 46 STATUS WORK DB BRCV Work DB for STATUS See also Data Transmission with 3964 R Using BSEND and BRCV Page Point to point Link CP 441 Installation and P
61. 0 DBX30 2 cTS_IN DB30 DBX30 3 DCD_IN DB30 DBX30 4 RI_IN DB30 DBX30 5 See also Data Transmission with the ASCII Drive Page 58 Point to point Link CP 441 Installation and Parameter Assignment 178 Manual 04 2012 A5E00405449 03 Communication via System Function Blocks 6 5 Using the System Function Blocks with the ASCII Driver 6 5 2 Controlling the RS232 accompanying signals Introduction The user can use the parameter inputs of the V24_SET FB to set or reset the corresponding interface outputs of an interface of the CP 441 The V24_SET FB is called statically without conditions in the cycle or alternatively in a time controlled program You select the interface by specifying at the V24_SET FB the local ID of one of the connections that uses this interface The binary result is not affected Block call command STL representation LAD representation CALL V24_ SET REQ is i V24_SET i 7 EN ENO DONE REQ DONE ERROR STATUS 7 ID ERROR RTS STATUS DTR Note The EN and ENO parameters are only present in the graphical representation LAD or FBD To process these parameters the compiler uses the binary result BR The binary result is set to signal state 1 if the block was terminated without errors If there was an error the binary result is set to 0 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E004054
62. 09 P DB20 DBX10 0 byte 100 Access to memory markers 10 12 P M10 0 BYTE 3 Access to inputs 20 24 P E20 0 BYTE 5 Access to outputs 20 24 P A20 0 BYTE 5 Access to timers 1 5 L 1 TIMER 5 Access to counters 1 10 L 1 COUNTER 10 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Communication via System Function Blocks Jobs which can be processed simultaneously 6 2 Using the System Function Blocks The number of requests BSEND and GET which can be processed simultaneously depends on the data volume transmitted with the individual requests The requests are buffered on the CP 441 in data blocks of 450 bytes Up to 40 data blocks can be buffered per interface If no further data blocks can be buffered the request is terminated with an error STATUS 02 The message O50FH is entered in the error signaling area Example If all requests are 2000 bytes long for example 8 requests can be buffered Number of transmittable data sets If an automation system uses more than one CP the number of data that can be transmitted depends largely on CPU performance A CPU 416 for example can handle approximately 80 100 frames of 240 bytes per second Table 6 5 If the communication load is increased please note the following Behavior Transfer between CP and CPU receives negative acknowledgment 0407 or 0408 in the CP s diagnostic buffer To correct or avoid errors
63. 1 Introduction Once you have mounted the communication processor you must inform the programmable controller that it is there This process is known as configuration Parameter Assignment Options You configure and set the parameters for the module variants of the CP 441 using STEP 7 or the CP 441 Configuration Package for Point to Point Communication parameter assignment interface Table 5 1 Configuration Options for the CP 441 Product Order Number Configurable using the under STEP 7 under STEP 7 parameter assignment tool TIA Portal CP 441 1 6ES7 441 1AA04 0AE0 as of version V5 1 6 as of version V5 3 as of version V11 CP 441 2 6ES7 441 2AA04 0AE0 CP 441 1 6ES7 441 1AA05 0AE0 as of version V5 1 13 as of version V5 3 in version V11 SP2 CP 441 2 6ES7 441 2AA05 0AE0 using HSRO225 Update 3 using HSP0025 Requirements Configuration The CP 441 Configuration Package for Point to Point Communication parameter assignment interface is installed on the PG PC under STEP 7 or STEP 7 V11 SP2 The parameter assignment interface for the CP 441 is included in STEP 7 TIA Portal as of V11 Before you can enter the communication processor in the configuration table of the STEP 7 software you must have created a project and a terminal with STEP 7 In the following configuration refers to the entry of the communication processor in the configuration table of the STEP 7 software In the configuration tabl
64. 1 communication partner with static destination definition use of BSEND and BRCV What To Do This type of data transmission has the advantage that using the BRCV you can interpret the NDR parameter to establish when the complete data was received and the EN_R parameter to prevent unprocessed data from being overwritten at the receiver On Your Programmable Controller With this programming option the data source is specified at the sender and the data destination is specified at the receiver In the S7 user program of the CPU you must program the BSEND system function block SFB 12 For the R_ID parameter you can specify a value from 0 to 255 decimal The value is accepted once during CPU startup and cannot subsequently be changed No other values may be specified The CP 441 transmits the R_ID value 0 255 in the RK512 frame header as DX 0 255 extended data block to the CP 441 of the communication partner R_ID 0 255 decimal gt DX 0 255 decimal In the CP 441 of the communication partner this becomes the R_ID value 0 255 again with which the corresponding BRCV on the partner CPU can be addressed For the SD_1 parameter data type ANY specify which data source is to be passed on Example p DB10 DBX5 0 WORD 1 The length is not evaluated with data type ANY since the length of the data to be sent is defined in the LEN parameter Note that the length of the transmittable data is restricted to 4 KB Note If y
65. 2 INTF INTF EXTF EXTF FAULT 1 FAULT 1 TxD 1 TxD 1 RxD 1 RxD 1 FAULT 2 TxD 2 RxD 2 Interface slot IF 1 Interface slotiF 1 Interface slot IF 2 E e O 3 441 2AA0x OAEO INTF EXTF FAULT 1 TxD 1 RxD 1 FAULT 2 TxD2 RxD 2 IF Hol Figure 1 1 Position of the operator control and display elements on the CP 441 1 and CP 441 2 communication processors Point to point Link CP 441 Installation and Parameter Assignment 16 Manual 04 2012 A5E00405449 03 Product Description LEDs 7 3 Structure of the CP 441 The following LEDs are located on the front panel of the CP 441 e INTF red e EXFT red e FAULT 1 red e TXD 1 green e RXD1 green e FAULT 2 red e TXD2 green e RXD2 green Slot for Interface Modules CP 441 signals internal fault CP 441 signals external fault Fault display for Interface IF 1 Interface IF 1 is sending Interface IF 1 is receiving Fault display for Interface IF 2 CP 441 2 Interface IF 2 is sending CP 441 2 Interface IF 2 is receiving CP 441 2 The CP 441 1 contains one slot and the CP 441 2 has two slots for plug in interface modules By exchanging the interface modules you can adapt the CP 441 to suit the properties of the communication partners There are three types of interface modules e RS232 see section Properties of the RS232 interface module
66. 2 Blocks Used in the Sample Program cs0cecaccsenstirecuocsiwetre ale desiandacsannsckcctenlacialeandsctnncetetetoankaicacee 229 9 9 Installation Error Messages sornione aaa i aa aaa a a aa aa iaaa 230 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 9 Table of contents A Technical Specifications o 322 5 5 ccdavsic ek olele tive chelsdelecegentnadesleceis Sect ancacalagehestavedavedaceiecessudeaveaaqiedieeedeevaaeenees A 1 Technical data of the CP 441 and the interface modules B Cables B 1 RS232 interface module B 2 20MmA TTY interface SUDMOMUIE 0 0 0 cece cece ee cccece ee eess eee ceeeeuueseuaesessauaeeeeeaeeesuueueeesanaeeeeeansess B 3 X27 RS422 465 interface Module siisii nnana n ANa aaa AA E bone 231 233 240 247 C SFB Parameters osinean aaaea a aa Eie Ee aaar NE eaaa AAE a ODEN enstvasietp Te DaN D 255 257 259 265 Point to point Link CP 441 Installation and Parameter Assignment 10 Manual 04 2012 A5E00405449 03 Product Description 1 1 1 Applications for the Communication Processor Introduction The communication processor allows you to exchange data between programmable controllers or computers by means of a point to point link Functionality of the CP 441 The CP 441 communication processor provides the following functionality e A choice of two models with either one the CP 441 1 or two CP 441 2 serial device interfaces which can be adjusted to
67. 2 computer link The following table lists the data types which can be transmitted Table 6 23 Request table for Sending data with RK512 to the CP 441 communication partner using PUT Source PUT To Destination Parameter Assignment in the Parameter Parameter Assignment in PUT from S7 Communication PUT SFB Parameter SD_1 Assignment in SFB Parameter ADDR Partner Source the PUT SFB Destination Parameter LEN Source S S DBNO S Offset Length D D DBNO D Offset TYPE bytes Max 450 TYPE Words bytes Data block Data block DB 1 0 1 DB 1 255 0 255 Flag Data block MB Irrelevant 0 1 DB 1 255 0 255 Inputs Data block IB Irrelevant 0 1 DB 1 255 0 255 Outputs Data block QB Irrelevant 0 1 DB 1 255 0 255 Counter Data block Z Irrelevant 0 1 DB 1 255 0 255 Timers Data block T Irrelevant 0 d DB 1 255 0 255 This value is dictated by the CPU that you use Dependent on the CPU of the communication partner max 450 bytes Abbreviations used in the table S TYPE source type S DBNO source data block number S Offset source start address D TYPE destination type D DBNO destination data block number D Offset destination start address Specifications in the frame header of the RK512 protocol The following table shows the specifications in the RK512 frame header Table 6 24 Specifications in frame header of RK512 protocol Sending data with RK512 to CP
68. 3 199 Diagnostics Functions of the CP 441 8 3 Diagnostics via the error signaling area SYSTAT Event Class 5 05H Error while processing CPU request Event no Event Text To correct or avoid errors 05 07H Only for printer drivers Edit the message text to reduce it to a length of less Message text too long than 150 characters or no more than 250 characters if it contains variables 05 08H Only for printer drivers You have configured more conversion statements Too many conversion statements than variables The conversion statements without associated variables are ignored 05 09H Only for printer drivers You have configured more variables than Too many variables conversion statements Variables for which there is no conversion statement are not output 05 O0AH Only for printer drivers Check the conversion statement Undefined or Unknown conversion statement unsupported conversion statements are replaced in the printout with 05 O0BH Only for printer drivers Check the control statement Undefined or incorrect Unknown control statement control statements are not executed The control statement is not output as text either 05 O0CH Only for printer drivers Check the conversion statement Conversion Conversion statement not executable statements that cannot be executed are output in the expression in accordance with the defined width and the valid remaind
69. 3 Basic Principles of Serial Data Transmission 2 8 Parameter Assignment Data of the Protocols Message texts The following table contains descriptions of the parameters for configuring message texts using the CP 441 Configuration Package for Point to Point Communication parameter assignment interface Table 2 18 Message texts printer driver Parameter Description Value range Default value Name of text SDB text The message texts for a CP 441 serial ASCII characters max 8 file interface must be stored in a text SDB for characters parameter assignment You can also store configured message texts in an external text file Version number Version number of the text SDB text file 0 1 to 99 9 Message texts All the message texts stored in the text block ASCII characters unchangeable are displayed here together with their message text numbers you can change a selected message text line by means of the Edit Message parameter Edit message You can transfer message texts edited here Message text number 0 to 3999 to the Message Texts list by clicking the Enter button Message text max 150 characters e ASCII characters text e Conversion statements for variables e Control characters all those defined in the control character table Font style You can easily assign control characters to e B bold text selected in the Edit Message entry box by using buttons B to U sx
70. 3964R procedure sends a DLE and returns to idle mode If the BCC is faulty or a different receiving error occurs an NAK is sent to the communication partner A repetition is then expected Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 4 Data Transmission with the 3964 R Procedure Receiving with the 3964 R Procedure The figure below illustrates receiving with the 3964 R procedure Characters except STX NAK Intention to send Receive STX Repetition expected Note NAK W 1 Initialization Start conflict low T priority NAKTIM T AT xii Buffer free Buffer not free ae Send DLE Send NAK NAKTIM W transmission attempt counter Immediate return to initial state at line break BREAK T 400 ms Figure 2 9 Flow chart of receiving with the 3964 R procedure part 1 R Counter for retries D Default state Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 41 Basic Principles of Serial Data Transmission 2 4 Data Transmission with the 3964 R Procedure Receiving with the 3964 R Procedure The figure below illustrates receiving with the 3964 R procedure Correct o character Wait to receive characters Invalid character T gt Tchar delay time Start Tchar delay time T gt Tchar delay time Note NAK Ch
71. 4 2012 A5E00405449 03 195 Diagnostics Functions of the CP 441 8 3 Diagnostics via the error signaling area SYSTAT Example Table 8 8 Example for calling SFB 22 STATUS STL CALL SFB 22 DB22 REQ DB450 DBX0 0 ID WH16 1000 NDR DB450 DBX0 4 ERROR DB450 DBX0 5 STATUS DB450 DBW12 PHYS p DB450 DBX16 0 LOG p DB450 DBX18 0 LOCAL p DB450 DBX20 0 Numbering Scheme 196 The numbering scheme for the events structure Bit no 15 13 12 8 7 STATUS Reserve Event class STATUS SFB call in an FB The errors events are entered in bytes 20 35 of DB450 following a rising edge of the REQ parameter SFB22 should not be run unless an error occurs in data transfer For Byte 2 example the error bit of a BSEND Byte 2 ERROR parameter can be used as the request bit for the STATUS REQ Byte 16 Calling SFB22 automatically clears the error signaling area of SYSTAT in the error signaling area SYSTAT has the following Event number Error number Event Figure 8 1 Numbering scheme for events in error signaling area SYSTAT Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Diagnostics Functions of the CP 441 8 3 Diagnostics via the error signaling area SYSTAT Event Classes Table 8 9 The table below describes the various event classes and numbers Event classes and event numbers are listed with hexadecimal notation Event
72. 441 Multiprocessor communication 118 O Operating mode transitions P Page layout in message texts Page number setting 101 Parameter assignment 115 120 Parameter assignment data ASCII driver 80 Printer driver 87 RK512 Parameter lt i interface oO Parity 77 83 Printer driver BUSY Signal Data flow control Zz Message Text Output 72 Message texts 72 97 Parameter Priority Procedure 2 Programming device PG 14 Protocol VA device cable Protocol 75 integrated in oe fd 1a bs Protocol parameters 76 PUT frame 46 4 46 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Index R Receive buffer 67 78 84 Receiving data 3964 R procedure 39 ASCII driver 61 Removing the CP 441 110 Removing the interface modules 411 Response frame 46 48 RK512 computer link 46 Command frame 46 47 Fetching data Parameter 80 Response frame 46 48 Sending data RS232 accompanying signals S Scope of the manual 3 SEND frame SEND PUT frame 46 47 50 Sending data ASCIl driver RK512 Sending Data 3964 R procedure 35 ASCII driver SFB Parameters Slot for Interface Modules Slots Standard cable Start bit 77 82 88 Start up behavior STATUS output of the SFBs 187 Steps Stop bits 77 83 System function block 3964 R procedure for printer driver 181 system function blocks 3964 R procedu
73. 49 03 179 Communication via System Function Blocks 6 5 Using the System Function Blocks with the ASCII Driver 6 V24_SET FB Parameters The following table lists the parameters of 6 V24_SET FB Table 6 31 6V24 SET FB Parameters Name Type Data type Description Permitted values comment REQ VAR_INPUT BOOL Activates a transfer at rising edge ID VAR_INPUT WORD Unique communication connection to a communication partner DONE VAR_OUTPUT BOOL Indicates at a rising edge the error free completion of a request ERROR VAR_OUTPUT BOOL Rising edge indicates error STATUS VAR_OUTPUT WORD Contains detailed error message or warning RTS INPUT BOOL Request to send Control CP 441 output CP 441 ready to send DTR INPUT BOOL Data terminal ready Control CP 441 output CP 441 ready Example Table 6 32 Example of Calling the 6 V24_ SET FB STL CALL FB 6 DB56 REQ DB40 DBX10 0 ID WH 16 1000 DONE DB40 DBX10 1 ERROR DB40 DBX10 2 STATUS DB40 DBW20 RTS DB40 DBX30 2 DTR DB40 DBX30 0 See also 180 Data Transmission with the ASCII Drive Page 58 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Communication via System Function Blocks 6 6 Introduction 6 6 Using the system function blocks with the printer driver Using the system function blocks with the printer driver The PRINT system function bl
74. 87 x 67 x 19 mm Approx 87 x 67 x 19 mm DxHxW Weight 80g 80g 80 g Data transmission rate Max 115 2 kbps Max 19 2 kbps Max 115 2 kbps Min 300 bps Min 300 bps Min 300 bps Cable length Max 15m Max 1000 m at 9600 bps Max 1200 m at 19200 bps Front connectors 9 pin sub d male with screw interlock 9 pin sub d female with screw interlock 15 pin sub d female with screw interlock 232 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Cables B 1 RS232 interface module Pin assignment The table below shows the pin assignment for the 9 pin subminiature D male connector in the front panel of the RS232 interface module Table B 1 Pin assignment for the 9 pin subminiature D male connector of the RS232 interface module Male Connector on Pin Designation Input Output Meaning Module 1 DCD Received Detector Input Receiver signal level 2 RXD Received Data Input Received data 3 TXD Transmitted Data Output Transmitted data 4 DTR Output Communication terminals Data Terminal Ready ready 5 GND Ground Signal ground GNDint 6 DSR Data Set Ready Input Ready for operation 7 RTS Request To Send Output Activate transmitter 8 CTS Clear To Send Input Ready for sending 9 RI Ring Indicator Input Receiving call View from the front Cables If you make your own cables you must remember that unconnected inputs at t
75. 944 AG 95 Point to point Link CP 441 Installation and Parameter Assignment 246 Manual 04 2012 A5E00405449 03 Cables B 3 Pin assignment X27 RS422 485 interface module B 3 X27 RS422 485 interface module The table below shows the pin assignment for the 15 pin subminiature D female connector in the front panel of the X27 interface module Table B 3 Pin assignment for the 15 pin subminiature D female connector of the X27 interface module Female Connector on Pin Designation Input Output Meaning Module 1 x 2 T A Output Transmitted data four wire operation 3 4 R A T A Input Received data four wire operation Input Output Received transmitted data two wire operation 5 s 6 x i 7 r 8 GND Functional ground isolated 9 T B Output Transmitted data four wire operation 10 11 R B T B Input Received data four wire operation Input Output Received transmitted data two wire operation 12 13 14 15 View from the front Cables If you make your own cables you must remember that unconnected inputs at the communication partner may have to be connected to open circuit potential Please note that you should only use shielded connector casings A large surface area of both sides of the cable shield must be in contact with the connector casing caution Never conn
76. Assignment Data of the Protocols X27 RS422 485 interface The table below contains descriptions of the parameters for the X27 RS422 485 interface module RS485 operation is not possible in conjunction with the printer Table 2 11 X27 RS422 485 interface module ASCII driver Parameter Description Value range Default value Operating mode Specifies whether the X27 e Full duplex RS422 Full duplex RS422 four RS422 485 interface is to be run in four wire mode wire mode full duplex mode RS422 or half duplex mode RS485 see section Half duplex RS485 Serial transmission of a characte two wire mode Page 23 Initial state of None This setting only makes sense None R A 5V R B OV receive line with bus capable special drivers R A 5V R B OV Break detection is R A 5V R B OV possible with this initial state in conjunction with Full duplex RS 422 four wire mode R A OV R B 5V This initial state R A OV R B 5V corresponds to idle no sender active in Half duplex RS 485 two wire mode Break detection is not possible with this initial state Only with Full duplex RS422 four wire mode 2 Only with Full duplex RS422 four wire mode with Half duplex RS485 two wire mode the default setting is R A OV R B 5V Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 85 Basic Principles of
77. BRCV 0 cc eceeeeeeeeeeeeeenteeeeeteneeeeeeae 6 3 3 Data transmission with 3964 R using BSEND and a receive mailbox 6 4 Using the system function blocks with the RK512 computer Iink cceeeeeeceeeeeeeeeeeees 6 4 1 Send data with a static destination definition With RK512 cc ccccccccccccceceeeeeeeeeeseeeeeeeeeeeees 151 6 4 2 Sending data with RK512 to the CP 441 communication partner with static destination definition use of BEND and BRCV scsssessssssssssssesssessvessessesssessnsesnseseessessnsesnecaneeieeseeesees 6 4 3 Sending data with RK512 to the communication partner CP 441 with static destination definition using BSEND cccceccccceceeeeeeeeneeceee teen cece aeaeceeeeeeesecaaeaeceeeeeseseccaeeeeeeeeeeeetennineeees 157 6 4 4 Sending data with RK512 to the S5 communication partner or third party device with Static destination definition ccc ccccecececeeeseceeeeeeeeececesesecesesesecececesecesecesesesesesaeaeaeaeeseness 6 4 5 Sending data with RK512 to a communication partner with dynamic destination definition 6 4 6 Fetching data with RK512 from a communication partner eceececceceeeeeeeeeeeeeeeeeteeeeeeeees Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Table of contents 6 5 Using the System Function Blocks with the ASCII Driver 6 5 1 Reading the RS232 accompanying signals ceececeeeeeeeeeeeeeeeeeeeeea
78. CTS control signals by means of the CP 441 Configuration Package for Point to Point Communication parameter assignment interface or control them using the function blocks FBs in the user program Operate RS232 accompanying signals The RS232 accompanying signals can be used as follows e When automatic operation of all RS232 accompanying signals is configured e When data flow control RTS CTS is configured e By means of the V24_STAT and V24_SET functions FBs Note When automatic operation of the RS232 accompanying signals is configured neither RTS CTS data flow control nor RTS and DTR control by means of the V24_SET FB are possible When RTS CTS data flow control is configured RTS control by means of the V24_SET FB is not possible On the other hand it is always possible to read all RS232 accompanying signals using the FB V24_STAT function The following sections describe the basic procedures for control and evaluation of the RS232 accompanying signals Point to point Link CP 441 Installation and Parameter Assignment 68 Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 6 Data Transmission with the ASCII Driver Automatic operation of the accompanying signals Automatic operation of the RS232 accompanying signals on the CP 441 is implemented as follows e As soon as the parameter configuration puts the CP 441 into an operating mode with automatic operation of the RS232 accompanying signals it
79. Check Character 3964R only e NAKNegative Acknowledge Note If DLE is transmitted as an information string it is sent twice so that it can be distinguished from the control code DLE during connection setup and release on the send line DLE duplication The receiver then reverses the DLE duplication Priority With the 3964 R procedure one communication partner must be assigned a higher priority and the other partner a lower priority If both partners begin connection setup at the same time the partner with the lower priority will defer its send request Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 33 Basic Principles of Serial Data Transmission 2 4 Data Transmission with the 3964 R Procedure 2 4 2 Block Checksum Block Checksum 34 With the 3964R transmission protocol data integrity is increased by the additional sending of a block check character BCC Message frame STX Data DLE ETX BCC 4 gt 4 gt 4 gt 4 gt 02H gt 30H gt 31H gt 32H gt 10H gt 03H gt 20H 30 0011 0000 31 0011 0001 XOR 0000 0001 32 0011 0010 XOR 0011 0011 10 0001 0000 XOR 0010 0011 03 0000 0011 XOR 0010 0000 BCC gt 2 0 Figure 2 5 Block Checksum The block checksum is the even longitudinal parity EXOR operation on all data bytes of a sent or received block Its calculation begins with the first byte of user data fi
80. Data t DB Obtain th issible data t d thei Unknown or impermissible data type e g DE combinations from the request tables RK512 only Mismatch between SFB s source and destination data types Point to point Link CP 441 Installation and Parameter Assignment 200 Manual 04 2012 A5E00405449 03 Diagnostics Functions of the CP 441 8 3 Diagnostics via the error signaling area SYSTAT Event Class 5 05H Error while processing CPU request Event no Event Text To correct or avoid errors 05 14H Specified start addresses too high for desired data Obtain from the request tables the permissible start type or start address or DB DX number too low addresses and DB DX numbers that can be specified in the program 05 15H RK512 only Wrong bit number specified for Permissible bit numbers 0 to 7 coordination flag 05 16H RK512 only Specified CPU too high Permissible CPU numbers none 1 2 3 or 4 05 17H An error occured while receiving The receive frame Reduce the length of your connection partner s is longer than 4 KB or is longer than the defined frame or increase the length of your receive DB fixed receive length or the receive frame does not fit into the destination frame 05 18H Transmission length at sending too great gt 4 KB RK512 only Obtain the permissible lengths from the request tables Split the request up into several shorter requests 05 19H CP in wrong mode for PLC request Check if the a
81. E00405449 03 81 Basic Principles of Serial Data Transmission 2 8 Parameter Assignment Data of the Protocols Parameter Description Value range Default value End delimiter 1 First end code e At 7 data bits 3 03H ETX 0 to 7FH Hex e At 8 data bits 0 to FFH Hex 2 End of text character Second end code if specified e At7 data bits 0 20 0 to 7FH Hex 2 e At 8 data bits 0 to FFH hex 2 Message frame When the end criterion is fixed frame 1 to 4096 bytes 240 length when received length the number of bytes making up a 3 frame is defined 1 Can only be set if the end criterion is an delimiter 2 Depending on whether you set 7 or 8 data bits for the character frame 3 Can only be set if the end criterion is fixed frame length Data transmission rate character frame The table below contains descriptions of and specifies the value ranges of the relevant parameters Table 2 8 Data transmission rate character frame ASCII driver Parameter Description Value range Default value Data transmission rate Data transmission rate in bps e 300 9600 Note e 600 The maximum transmission rate for the 20 mA TTY e 1200 interface module is 19200 bps e 2400 e 4800 e 9600 e 19200 e 38400 e 57600 e 76800 e 115200 Start bit During transmission a start bit is prefixed to each 1 fixed value 1 character to be sent Data bits Number of bits onto which a character
82. Figure 2 14 Sequence of a continuation SEND PUT frame with a continuation response frame Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 51 Basic Principles of Serial Data Transmission 2 5 Data transmission with the RK512 computer link 2 5 2 Procedure for fetching data with RK512 52 Fetching data with RK512 The figure below shows the transmission sequence when fetching data with a response frame using the RK512 computer link CP 441 GET message frame Start code 02H Pos acknowledgement 10H lt 00H 00H GET request 45H Data block 44H Data source DB100 64H DW100 64H Length 00H 50 DW 32H No CM FFH CPU 1 only 1FH End code 10H End code 03H Only with block check Pos acknowledgement 10H lt STX DLE 1st byte 2nd byte 3rd byte 4th byte 5th byte 6th byte 7th byte 8th byte 9th byte 10th byte DLE ETX BCC DLE Response message frame with data Start code 02H Pos acknowledgement 10H 00H 00H 00H Error code 00H 1st data byte 2nd data byte nth data byte End code 10H End code 03H Only with block check Pos acknowledgement 10H STX DLE 1st byte 2nd byte 3rd byte 4th byte 5th byte 6th byte nth byte DLE ETX BCC DLE Communication partner Connection setup Message frame header Connection release Conne
83. Functions of the CP 441 8 2 Diagnostics Messages of the System Function Blocks Error Information for SFB 22 The table contains all the SFB 22 specific error information that can be output in the ERROR and STATUS parameters Table 8 7 Error Information for SFB 22 STATUS ERROR STATUS Description decimal 0 11 Warning New request ineffective because previous request not yet completed 1 Communication problems for example e Connection description not loaded local or remote e Connection interrupted e g cable CPU off 1 2 Negative acknowledgment from partner device The function cannot be executed 1 4 Error in PHYS LOG or LOCAL regarding data length or data type 1 8 Access to remote object denied 1 10 Access to local user memory not possible for example access to deleted DB 1 12 The SFB call e specified an instance DB which does not belong to SFB 22 e specified a global DB instead of an instance DB e did not have an Instance DB programming device load a new instance DB 1 20 Insufficient main memory 194 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Diagnostics Functions of the CP 441 8 3 Diagnostics via the error signaling area SYSTAT 8 3 Diagnostics via the error signaling area SYSTAT The SYSTAT error message area is a data area on the CP 441 by means of which you can query the device status of an interface using th
84. H e Data area does not exist except DB DX or O60AH e Data area too short except DB DX 0902H 10H 0601H Error in frame header 1 1st or 4th command byte in 0604H header is incorrect 0605H 090BH 12H 0904H Partner reports Illegal request type 14H 0301H DB DX access error at the partner DB DX does not 0302H exist or is too short or SIMATIC S5 as partner 0606H e DB DX does not exist or 0903H e DB DX too short or e DB DX number impermissible Permissible source area for GET request exceeded Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 209 Diagnostics Functions of the CP 441 8 4 Error Numbers in the Response Message Frame 210 REATEL SYSTAT Error Messages Event Class Event Number 16H 0602H Errors in frame header that are detected by the partner 0603H 3 command byte in the header is wrong 090AH 2AH 060DH Partner was not yet restarted 090DH 32H O60FH DB DX locked at the partner by coordination flag 0909H REATEL SYSTAT Error Messages Event Class Event Number 34H 0608H Partner detects incorrect frame length total length 060BH 060CH 0611H 090CH 36H O60EH Partner detects synchronous error Frame sequence 0908H error Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Diagnostics Functions of the CP 441 8 5 Diagnostics via the diagnostic buffer o
85. H 16 1000 A i DB 10 is sent to the communication R_ID DB60 DBD820 partner DONE DB60 DBX812 2 The partner stores the data in DB ERROR DB60 DBX812 3 71 starting at data word 20 STATUS DB60 DBW802 Interprocessor communication flag byte and IPC bit are also SD_t SPHOB 1O DBAS OC WORD 11 transferred The destination LEN DB60 DBW806 information in the R_ID is accepted once during CPU startup and cannot subsequently be changed Point to point Link CP 441 Installation and Parameter Assignment 162 Manual 04 2012 A5E00405449 03 Communication via System Function Blocks 6 4 Using the system function blocks with the RK512 computer link Request Table The following table lists the data types which can be transmitted Data destination DB Table 6 18 Request table for Sending data to an S5 communication partner or third party device with RK512 data destination DB Source to the destination Parameter Assignment in Assigning Parameter Assignment in the BSEND from S5 Communication the BSEND SFB Parameter parameters to BSEND SFB Parameter S7 Partner or Third party SD_1 Source the BSEND R_ID Destination Device SFB LEN parameter source S TYPE S DBNO S Length max D D DBNO D Offset Offset 4096 byte TYPE words byte Data block Data block DB 1 0 1 7 DB 3 255 0 255 Flag Data block MB Irrelevant 0 1 DB 3 255 0 255 Inputs Data block IB Irr
86. I driver the printer driver and the 3964 R procedure Opening the Dialog The Properties PtP Connection dialog appears automatically when you insert a new connection in the connection table You can also call this dialog for a connection at a later time 1 Select the connection from the connection table 2 Select the menu command Edit gt Properties PtP Connection Result The Properties PtP Connection dialog opens Point to point Link CP 441 Installation and Parameter Assignment 126 Manual 04 2012 A5E00405449 03 Configuring and Assigning Parameters for the CP 441 Settings 5 7 Procedure in the Properties PtP Connection dialog You set the properties of a connection in the Properties PtP Connection dialog Table 5 3 Settings in the Properties PtP Connection dialog for the ASCII driver the printer driver and 3964 R procedure Parameter Configured dynamic connection Description The check box is grayed and not selected The connection is set up automatically during startup and is sustained until shutdown Active connection setup The check box is grayed and selected The connection is always set up by the local station Send operating mode messages The check box is grayed and not selected Operating status messages cannot be sent Local ID Local ID hexadecimal which you have to specify as the parameter ID at the system function block in the user program of your CPU
87. Information for SFB 13 BRCV ERROR STATUS Description decimal 0 11 Warning New request ineffective because previous request not yet completed 0 17 Warning block receiving asynchronous data 1 1 Communication problems for example e Connection description not loaded local or remote e Connection interrupted e g cable CPU off 1 2 The function cannot be executed 1 4 Error in receive area pointer RD_1 regarding data length or data type data block sent is longer than receive area 1 5 Reset request received incomplete transfer 1 8 Access to remote object in user memory denied 1 10 Access to local user memory not possible for example access to deleted DB 1 12 The SFB call e specified an instance DB which does not belong to SFB 13 e specified a global DB instead of an instance DB e did not have an Instance DB programming device load a new instance DB 1 18 R_ID already exists in the link 1 20 Insufficient main memory Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 191 Diagnostics Functions of the CP 441 8 2 Diagnostics Messages of the System Function Blocks Error Information for SFB 14 The table contains all the SFB 14 specific error information that can be output in the ERROR and STATUS parameters Table 8 4 Error Information for SFB 14 GET ERROR STATUS Description decimal 0 11 Warning New request ineffec
88. MATIC memory areas the remote requests Continue to be processed using the communication mechanisms PUT GET in the case of Continue Work also during a CPU stop Are not passed on to the CPU in the case of STOP but rather a RK512 response frame with the error code 0A is returned to the remote partner that submitted the request e Behavior when using the Modbus slave protocol See Operating Instructions S7 300 S7 400 Loadable driver for point to point CPs MODBUS protocol RTU format S7 is slave Further Information The basic operation of the parameter assignment interface CP 441 Configuration Package for Point to Point Communication is the same and self explanatory for all communication processors For this reason the parameter assignment interface is not described in detail here Also the on line help provides sufficient support for working with the parameter assignment interface Point to point Link CP 441 Installation and Parameter Assignment 116 Manual 04 2012 A5E00405449 03 Configuring and Assigning Parameters for the CP 441 5 2 Managing the Parameter Data 5 2 Managing the Parameter Data Introduction The CP 441 s configuration and parameter assignment data including the message texts is stored in the current project on the hard disk of the programming device PC Data management When you quit the configuration table by selecting Station gt Save or Station gt Save As the system aut
89. OB 82 is called with this diagnostic data as start information Organization block OB 82 You have the option of programming error responses in the user program in the OB 82 If no OB 82 is programmed the CPU automatically enters STOP mode in the event of a diagnostics interrupt Diagnostic Information as Bit Pattern The CP 441 provides 4 bytes of diagnostic information To display the error that has occurred these 4 bytes are occupied as follows 2nd byte The 2nd byte of diagnostic data contains the class ID of the CP 441 in bits 0 to 3 2 byte Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 213 Diagnostics Functions of the CP 441 8 6 Diagnostic interrupt 1st 3rd and 4th bytes The 1st 3rd and 4th bytes of the diagnostic data represent the error which has occurred Bit 0 in the 1st byte is the group error display INTF Bit 0 is always set to 1 if at least one bit from bits 1 to 7 is set to 1 i e if at least one error is entered in the diagnostic data Event 1 byte 3 byte 4 byte 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 Wire break 0 0 1 0 1 1 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 Incorrect parameter 110 0 1 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Diagnostic Information Hexadecimal The table below shows the 4
90. Procedure errors 45 Receiving data 39 Sending Data 35 A Acknowledgment delay time ADT ASCII driver Parameter Receive buffer Receiving data RS232 accompanying signals 68 Sending data B Base Connector for S7 Rear Panel Bus Block check character BUSY Signal C Character delay time 26 Character delay time CDT 76 Character frame 25 iz 87 Character set in message texts 72 93 Cold restart of the CPU 186 Command frame Communication Data Transmission with 3964 R Using BSEND and a Receive Mailbox data transmission with 3964 R using BSEND and BRCV Fetching data with RK512 from a communication partner 171 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Sending data to an S5 communication partner or third party device with RK512 Sending data with RK512 use of BSEND and BRCV 153 Sending data with RK512 using BSEND Connection attempts Connection Configuration 122 Simplified Continuation frame 46 Continuation GET frame 54 Continuation SEND frames Continuation SEND PUT frame 51 209 Control and display elements Control characters in message texts 72 93 Control statements in message texts Conversion statements in message texts Representation types CPU RUN 186 CPU stop 115 CPU STOP 186 D Data bits F7 82 88 Data flow control 83 90 Data transmission rate 77 82 87 Diagnostic messages 190 Diagnos
91. RINT B FB 52 PRINT C PRINT C DB 16 PRINT IDB Instance DB for the PRINT SFB DB 22 STATUS IDB Instance DB for STATUS SFB DB 146 DB_with_Convers_ Statem DB with conversion statement for representation type N DB 160 Process_Values DB transfer of process values DB 165 ME_WA_AL Message type Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 229 Programming Example for System Function Blocks 9 9 Installation Error Messages 9 9 Installation Error Messages Installation The hardware for the example is completely set up and the programming device is connected Once the CPU has been reset operating mode STOP transfer the example corresponding to your hardware configuration fully into the user memory Then use the operating mode switch to change from STOP to RUN_P start up characteristic CRST Malfunction If an error occurs during start up the block calls to be processed cyclically will not be executed and the error LED INTF or EXTF on the CPU will be set Detailed information on the cause of the error can be found in the diagnostic buffer Point to point Link CP 441 Installation and Parameter Assignment 230 Manual 04 2012 A5E00405449 03 Technical Specifications A 1 Technical data of the CP 441 and the interface modules General technical specifications In the following table you can find the technical specifications of the CP 441 You can find additiona
92. Remark To correct or avoid EXTF errors Firmware on on on on update in progress Firmware on off off off update completed CP 441 flashes on off off Module firmware Reloading the firmware without 2 Hz deleted firmware module update was firmware canceled firmware update still possible Hardware flashes off flashes flashes Read write operation Switch power supply to fault during 2 Hz 2 Hz 2 Hz failed module off and then on firmware again and reload the update firmware Check whether the module is defective Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 135 Configuring and Assigning Parameters for the CP 441 5 8 Firmware Updates 5 8 2 Viewing the Firmware Version Viewing the Hardware and Firmware Version You can view the current hardware and firmware version of the communication processor in STEP 7 in the Module Status dialog You can open this dialog by In SIMATIC Manager File gt Open gt Project gt HW Config gt Station gt Open Online gt and double click on communication processor Point to point Link CP 441 Installation and Parameter Assignment 136 Manual 04 2012 A5E00405449 03 Communication via System Function Blocks 6 Introduction Communication between the CPU the CP 441 and a communication partner takes place via the system function blocks of the CPU and the protocols of the CP 441 Communication be
93. SIEMENS SIMATIC S7 400 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 T LA D O Product Description Basic Principles of Serial Data Transmission N ioning the CP 441 Q O 3 3 D ie gt a Mounting the CP 441 Q Oo 5 a 3 5 a i 3 a gt n n amp S 5 a Parameters for the CP 441 Communication via System Function Blocks O Start up Characteristics and Operating Mode Transitions 7 of the CP 441 Diagnostics Functions of the 8 CP 441 Programming Example for 9 System Function Blocks Technical Specifications Cables on TI WO U o D 3 D a O wD gt Ze 59 3 8 OX d 9 N ied gt a O a D mj Literature on SIMATIC S7 Legal information Warning notice system This manual contains notices you have to observe in order to ensure your personal safety as well as to prevent damage to property The notices referring to your personal safety are highlighted in the manual by a safety alert symbol notices referring only to property damage have no safety alert symbol These notices shown below are graded according to the degree of danger indicates that death or severe personal injury will result if proper precautions are not taken WARNING indicates that death or severe personal injury may result if proper precautions are not taken CAUTION with a safety
94. Sender i i 1 Receiver 31 1 TxD RxD 3 st i l pod l l l l TE l l l I l l 11 for DR230 l i L i 25 for PT 88 i 6 Is DSR l l m l Eob oa E l 4 DTR 1 ae l 1 l 1 DCD i l m f T gt 1 Io 5 GND GND ERA a as pa ae Vy k3 l I l l l l 3 eal Cable type i Casing shield LIYCY 4 x 0 14 i Casing shield Se Se Figure B 5 RS232 cable CP 441 IBM Proprinter Point to point Link CP 441 Installation and Parameter Assignment 238 Manual 04 2012 A5E00405449 03 Cables B 1 RS232 interface module RS232 cable S7 CP 441 laser printer The figure below illustrates the cable for a point to point link between a CP 441 and a laser printer with a serial interface PT 10 or LaserJet Series Il You require the following female male connectors for the cable e At CP 441 end 9 pin subminiature female e With IBM Proprinter 25 pin sub D male connector CP 441 Printer lew oS ee eee l ci l l l l l l i Receiver li N l Sender l I I l l 2 1 RxD TxD 1_ 2 l l I ei l l l l l l ba Sender Receiver l l l l l l l l Cable type MEOTEN LIYCY 7 x 0 14 Figure B 6 RS232 cable CP 441 laser printer Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 239 Cables B 220mA TTY interf
95. Serial Data Transmission 2 8 Parameter Assignment Data of the Protocols Initial state of receive line The figure illustrates the wiring of the receiver at the X27 RS422 485 interface none R B i R A TOV R B R A 5V R B OV R A 5V Asy R B R A OV R B 5V R A i Figure 2 27 Wiring of the receiver at the X27 RS422 485 interface ASCII driver See also Parameters for the communications protocols Page 115 Data Transmission with the ASCII Driver Page 58 Point to point Link CP 441 Installation and Parameter Assignment 86 Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 8 Parameter Assignment Data of the Protocols 2 8 4 Parameter Assignment Data of the Printer Driver 2 8 4 1 Parameter assignment data Introduction You can use the parameter assignment data of the printer driver to set the transmission specific parameters and the message texts for printer output Parameter assignment data of the printer driver With the CP 441 Configuration Package for Point to Point Communication parameter assignment interface specify the following e The parameters for the physical layer layer 1 of the printer driver e The message texts for printer output e The page layout character set and control characters for the message texts You will find a detailed description of t
96. TYPE D DBNO D Offset byte max 450 byte bytes Data block Data block DB 255 0 510 1 DB 1 0 Flag Data block MB Irrelevant 0 255 1 7 DB 1 7 0 Inputs Data block IB Irrelevant 0 255 1 DB 1 0 Outputs Data block QB Irrelevant 0 255 1 DB 1 7 0 Counter Data block Z Irrelevant 0 510 1 7 DB 1 7 0 Timers Data block T Irrelevant 0 510 1 DB 1 0 The maximum value is determined by the partner CPU that you use Dependent on your CPU and the CPU of the communication partner max 450 bytes Only even numbered values are permitted for these data types The maximum value is determined by the partner CPU Abbreviations used in the table S TYPE source type S DBNO source data block number S Offset source start address length source length D TYPE destination type D DBNO destination data block number D Offset destination start address Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 173 Communication via System Function Blocks 6 4 Using the system function blocks with the RK512 computer link Specifications in the frame header of the RK512 protocol The following table shows the specifications in the RK512 frame header Table 6 27 Specifications in frame header of the RK512 protocol Fetching data from the communication partner with RK512 So
97. The CP 441 reports the error in the SYSTAT error signaling area The 3964 R procedure does not initiate a repetition If transmission errors occur during receiving lost character frame error parity error etc the procedure continues to receive until the connection is shut down then an NAK is sent to the communication partner A repetition is then expected If the undamaged block still cannot be received after the number of transmission attempts defined in the static parameter set or if the communication partner does not start the repetition within a block wait time of 4 seconds the procedure aborts the receive operation The CP 441 reports the first erroneous transmission and the final abortion in the SYSTAT error signaling area Releasing a Receive Connection 40 When the 3964 procedure detects a DLE ETX character string it ends the receiving operation and confirms the successfully received block by sending a DLE signal to the communication partner When errors are found in the received data it outputs a NAK signal to the communication partner A repetition is then expected If the 3964R procedure recognizes the string DLE ETX BCC it stops receiving and compares the received block check character with the longitudinal parity calculated internally If the BCC is correct and no other receive errors have occurred the CP sends the code DLE to the communication partner If the BCC is correct and no other receive errors have occurred the
98. The figure below illustrates how these protocols of the CP 441 fit into the reference model Transport layer Layer 4 Every correctly received command message frame is answered with a response message frame RK 512 Not present with a pure Layer 3 point to point connection Data link layer Layer 2 The data bytes are transmitted with 3964 R Start and stop bits are added in the event of an error the transmission may be repeated Physical layer Layer 1 The physical transmission ot the data bytes is defined Figure 2 3 Position of the supplied protocols of the CP 441 in the reference model Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 29 Basic Principles of Serial Data Transmission 2 3 Transmission integrity Transmission Integrity with the Printer Driver Data Integrity When Using the Printer Driver e No data integrity precautions are taken for data transmission with the printer driver e To prevent data from being lost in the event of the printer receive buffer overflowing you can work with data flow control XON XOFF RTS CTS When data is output to the printer the printer s BUSY signal is evaluated The CP 441 receives the BUSY signal as a CTS signal and evaluates it in the same way see ASCII driver Note when using CTS RTS data flow control that you must set the polarity of the BUSY signal to CTS OFF on the printer only with the RS232C interfac
99. a message text as in the following example Name Anna Type STRING Start value Content of message text N 2 The DB for the format string can only be specified symbolically After the DB has been saved you should therefore set symbolic representation under View in the STL compiler and then enter a symbol for the data block in the symbol table under Options e g print_db As the address and data type you enter in the symbol table the DB in which the format strings are stored Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 181 Communication via System Function Blocks 6 6 Using the system function blocks with the printer driver Example Important Notes 182 3 Switch the view of your module in which you call PRINT to symbolic representation as well and enter print_db Anna as the FORMAT parameter at the system function block Up to four variables can be specified at SD_1 to SD_4 for printer output the number of the message text to be output is to be specified in the example Table 6 33 Example of Calling the PRINT SFB in a FB STL CALL SFB 16 DB116 PRINT SFB call in an FB REQ DB60 DBX100 0 ID WH 16 1000 DONE DB60 DBX100 1 ERROR DB60 DBX100 2 STATUS DB60 DBW110 PRN_NR DB60 DBB120 FORMAT print_db Anna Byte 200 in DB 60 contains the sD 1 p DB60 DBX200 0 Byte 1 message text number SD 2 SD 3 SD 4 Note
100. a third party device in this mode you must specify DB as the destination data block with the corresponding number and start address offset in the request block Interprocessor communication flags are not evaluated The connection via which the data is forwarded from the CP 441 to the S7 CPU is selected by means of the CPU number At the CP 441 Communication Partner At the communication partner no programming is necessary in the S7 user program of the CPU Example Table 6 22 Example for calling SFB 15 PUT STL CALL SFB 15 DB52 When this SFB is called at a REQ DB400 DBX0 0 positive edge at bit DBX0 0 data is sent to the communication D WH 16 1000 5 partner where it is placed in ONE DB400 DBX0 4 DB30 If several data areas are RROR DB400 DBX0 5 sent at the same time additional TATUS DB400 DBW12 SD_i and ADDR_i pairs can be assigned parameters DDR_1 P DB30 DBX 0 0 WORD 10 DDR_3 DDR _4 D 1 P DB10 DBX 0 0 WORD 10 D 2 D 3 I D E s A ADDR_2 A A s s s s D 4 See the CP 441 ANY demo project for instructions on how to change the send and receive parameters of the ANY data type at runtime The demo project is in the Examples STEP 7 catalog under CP 441 Point to point Link CP 441 Installation and Parameter Assignment 168 Manual 04 2012 A5E00405449 03 Communication via System Function Blocks Request Table 6 4 Using the system function blocks with the RK51
101. a transmission with the RK512 computer link Introduction The RK512 computer link controls data transmission via a point to point link between the CP 441 and a communication partner Unlike the 3964 R procedure the RK512 computer link includes not only the physical layer layer 1 and the data link layer layer 2 but also the transport layer layer 4 of the ISO reference model The RK512 computer link also offers greater data security and better addressing options Response frame The RK512 computer link answers each correctly received command frame with a response frame to the CPU transport layer This allows senders to check whether their data has arrived undamaged at the CPU or whether the data they require is available on the CPU Command frame Command frames are either SEND PUT or GET frames SEND PUT frame A SEND PUT frame is created when the CP 441 sends a command frame with user data and the communication partner replies with a response frame without user data GET frame A GET frame is created when the CP 441 sends a command frame without user data and the communication partner replies with a response frame with user data Continuation frame If the volume of data exceeds 128 bytes SEND PUT and GET frames are automatically accompanied by continuation frames Frame header With RK512 each frame begins with a frame header It can contains frame IDs information on the data destination and source and an error n
102. ace submodule B 2 20mA TTY interface submodule Pin assignment The table belows shows the pin assignment for the 9 pin sub D female connector in the front panel of the 20mA TTY interface module Table B 2 Pin assignment for the 9 Pole Sub D female connector on the 20mA TTY interface module Female Connector on Pin Designation Input Output Meaning Module 1 TxD Output Transmitted data 2 20mA Input 24 V ground 3 20mA l1 Output 20mA current generator 1 4 20mA l2 Output 20mA current generator 2 5 RxD Input Received data 6 7 2 8 RxD Output Received data 9 TxD Input Transmitted data View from the front 240 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Cables Block Diagram Cables B 2 20MA TTY interface submodule The figure below shows the block diagram for a 20 mA TTY interface IF963 TTY TxD from UART TxD RxD to the UART RxD 20 mA l1 24V 20 mA 12 20 mA Moav Figure B 7 Block Diagram for the 20mA TTY Interface If you make your own cables you must remember that unconnected inputs at the communication partner may have to be connected to open circuit potential Please note that you must only use shielded connector casings A large surface area of both sides of the cable shield must be in contact with the connector casing caution Never c
103. al 04 2012 A5E00405449 03 Communication via System Function Blocks 6 3 Using the System Function Blocks with the 3964 R Procedure Data Transmission to the Communication Partner with 3964 R Options To transmit data via the 3964 R procedure you have the following options e You can send the data with the system function block BSEND and receive the data at the communication partner with the system function block BRCV This type of data transmission has the advantage that using the BRCV you can interpret the NDR parameter to establish when the complete data was received and the EN_R parameter to prevent unprocessed data from being overwritten at the receiver e You can send the data with the BSEND system function block and use the CP 441 Configuration Package for Point to Point Communication parameter assignment interface to define a receive mailbox DB on the communication partner for the CP 441 the incoming data are stored in the mailbox on the communication partner s CPU If you use this type of data transmission you do not need to do any programming in the user program of the communication partner Note however that at the receiver you cannot tell when a transmission is taking place Therefore the receiving CP 441 cannot prevent unprocessed data from being overwritten at the receiver Note Please note that destination information is not transferred when transmitting data using the 3964 R protocol The data can there
104. allation and Parameter Assignment Manual 04 2012 A5E00405449 03 119 Configuring and Assigning Parameters for the CP 441 5 5 Subsequent Loading of Drivers Transmission Protocols 5 5 Subsequent Loading of Drivers Transmission Protocols Introduction To extend the functionality of the CP 441 and adapt it to the communication partner you can load other transmission protocols on the CP 441 2 loadable drivers in addition to the standard protocols in the module firmware ASCII 3964 R RK512 printer The loadable drivers are not shipped with the CP 441 or the parameter assignment interface as standard You have to order them separately see online Catalog http mall automation siemens com To find out how to install and assign parameters to a loadable driver and load it onto the CP 441 2 consult the separate documentation for the loadable driver Only the requirements and the fundamentals are described below Requirements The prerequisites for loading the drivers are e STEP 7 as of V5 3 e CP 441 Configuration Package for Point to Point Communication as of V5 1 6 e CP 441 2 e The dongle provided with the driver must be installed on the CP 441 2 Introduction to the Parameter Assignment Interface You select the loadable driver for parameter assignment in the CP 441 Configuration Package for Point to Point Communication parameter assignment interface After you have successfully installed the parameter assignment i
105. any instructions There are global data blocks and instance data blocks The data contained in the data blocks can be accessed absolutely or symbolically Complex data can be stored in structured form Data type With the help of the data types you can specify how the value of a variable or constant in the user program is to be used The data types are divided into elementary and structured data types Default setting The default setting is a reasonable basic setting that can be used whenever no other value is specified Diagnostic buffer Each CPU has its own diagnostic buffer in which detailed information on all the diagnostic events are entered in the sequence in which they occur Diagnostic events Diagnostic events are such as module errors system errors in the CPU which may be caused by a program errror or transitions from one operating mode to another Diagnostic functions The diagnostic functions cover the entire system diagnostics and include the recognition interpretation and reporting of errors within the Programmable Controller Point to point Link CP 441 Installation and Parameter Assignment 260 Manual 04 2012 A5E00405449 03 Glossary Downloading from the programming device Downloading of load objects e g code blocks from the programming device into the load memory of the central processing unit CPU Downloading to the programming device Uploading of load objects e g code blocks from the load memo
106. aracters except ETX DLE Start Tchar dme T gt Tchar delay time Wait for BCC incorrect NAK noted Send NAK Send DLE Receipt completed Initialization conflict noted low priority W lt 5 Note repetition expected start TBlock Times Tchar delay time 220 ms TBlock 4 s STX s W transmission attempt count BCC with 3964R only Immediate return to initial state at line break BREAK Figure 2 10 Flow chart of receiving with the 3964 R procedure part 2 R Counter for retries D Default state W Waiting for character reception Point to point Link CP 441 Installation and Parameter Assignment 42 Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 4 Data Transmission with the 3964 R Procedure 2 4 5 Handling Erroneous Data Handling Erroneous Data The figure below illustrates how erroneous data is handled with the 3964 R procedure Communication partner CP 441 __ Rreceiving data _ gt Start code 02H STX gt Connection Pos acknowledgement 10H _ DLE setup 1st data byte 1st byte eee data nth data byte nth Byte W End code 10H DLE gt End code 03H ETX Connection release 3964R only a BCC Sy Neg feedback 15H e NAK 7 Connection retry Figure 2 11 Data traffic when receiving erroneous data When the str
107. arameter Assignment 226 Manual 04 2012 A5E00405449 03 Programming Example for System Function Blocks 9 8 Introduction Prerequisite 9 8 Programming a Printer User Program Programming a Printer User Program The following sections describe an example of how to send data to a printer The example program indicates the procedure for the editing data and assigning parameters for the PRINT SFB Message texts configured beforehand with the parameter assignment interface CP 441 Configuration Package for Point to Point Communication menu command Hardware gt Properties of CP 441 gt Parameter gt Messages The messages have been transferred together with the other parameter data on the CP 441 Message text examples 1 B C B F220340 Share of component no B l B reached B 10 2RKg B 2 B S B H244312 Bypass fitting closed 3 B S B H620125 Failure of station input hydraulic mechanism 4 B S B P215055 Tank gauge pressure 12 4R bar The result on the printer for message text No 1 for example is W F220340 proportion component No 6 attained 1 45E 02 Kg Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 227 Programming Example for System Function Blocks 9 8 Programming a Printer User Program 9 8 1 General Cyclic Program The organization block OB 1 contains the cyclic program In the example the PRINT system function block works with the DB 16 data blocks
108. artner Use an interface test device switched into the transmission line to check Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 207 Diagnostics Functions of the CP 441 8 3 Diagnostics via the error signaling area SYSTAT Event Class 9 09H Response frame received from interconnection partner with error or error frame Event no Event Text To correct or avoid errors 09 ODH RK512 only Partner has not yet restarted Restart the partner programmable controller or set the mode selector on the CP or CPU to RUN 09 O0EH RK512 only Unknown error number received in Check if the error is the result of disturbances or of response frame a malfunction at the partner Use an interface test device switched into the transmission line to check Event class 10 OAH Errors in response frame of the partner detected by the CP Event no Event Text To correct or avoid errors OA 01H RK512 only Synchronization error of partner This error is reported after your own programming because device is restarted in the case of long frames or e Response frame without request when the partner is restarted This represents normal system start up behavior You do not have e Response frame received before continuation to correct anything frame sent The error can also occur during operation as a e Continuation response frame received after an co
109. ata consistency in the reference manual on system functions and standard functions System Software for S7 300 400 System and Standard Functions On Your Programmable Controller For each communication request you must program a BSEND SFB12 system function block in the S7 user program of the CPU The R_ID parameter takes any value When programming more than one BSEND you must use different R_IDs For the SD_1 parameter data type ANY specify which data source is to be passed on Example p pB10 DBX5 0 WORD 1 The length is not evaluated with data type ANY since the length of the data to be sent is defined in the LEN parameter At the CP 441 Communication Partner You must specify a receive mailbox with its data block DB on the CP 441 with the aid of the CP 441 Configuration Package for Point to Point Communication parameter assignment interface In the data block the data arriving via the CP 441 is stored in the CPU The data block must have been created previously on the CPU The data block must be 2 bytes longer than the transmittable data because the receiving CP enters the length of the transmitted data in the first two bytes Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 149 Communication via System Function Blocks 6 3 Using the System Function Blocks with the 3964 R Procedure Request Table The following table lists the data types which can be transmitted
110. block If the CP 441 recognizes the string DLE ETX BCC it stops Connection attempts 6 se receiving The CP 441 compares the block check character Transmission attempts 6 BCC received with the length parity calculated internally If the BCC is correct and no other receive errors have occurred the CP 441 sends the code DLE to the communication partner the NAK code is sent if an error occurs 3964 e The protocol parameters are programmable programmable without block check If the CP 441 recognizes the string DLE ETX it stops receiving and sends a DLE to the communication partner if the block was received undamaged or an NAK if it was damaged 3964R e The protocol parameters are programmable Pa with If the CP 441 recognizes the string DLE ETX BCC it stops receiving The CP 441 compares the block check character BCC received with the length parity calculated internally If the BCC is correct and no other receive errors have occurred the CP 441 sends the code DLE to the communication partner the NAK code is sent if an error occurs Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 75 Basic Principles of Serial Data Transmission 2 8 Parameter Assignment Data of the Protocols Protocol parameters You can only set the protocol parameters if you have not set the default values in the protocol Table 2 3 Protocol Parameters 3964 R Proced
111. buffer at The CP receive buffer of the CP 441 is not deleted at No fixed No start up CPU start up STOP gt RUN transition Buffered receive frames Here you can specify the number of receive frames to be 1 to 250 250 buffered in the CP receive buffer If you specify 1 here and deactivate the following parameter prevent overwrite and cyclically read the received data from the user program a current frame will always be sent to the CPU Prevent overwrite You can deactivate this parameter if the parameter e Yes Yes buffered receive frames is set to 1 This authorizes nee the buffered receive frame to be overwritten Use CPU receive mailbox Here you can specify whether a receive mailbox is tobe e Yes No set up on the CPU e No You must set up a receive mailbox if you have not programmed a BRCV system function block for the CP 441 in the user program of the CPU If you have programmed a BRCV you must deactivate this parameter otherwise data will be stored in the receive mailbox defined here instead of being processed by the BRCV DB number 1 Number of the data block for the receive mailbox on the 1 to 65535 1 CPU depending on the CPU 1 Only when Use CPU Receive Mailbox Yes 2 Only when Buffered receive frames 1 84 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 8 Parameter
112. cation partner with fixed destination BRCV The BRCV system function block allows you to receive data from a communication SFB 13 partner and transfer it to an S7 data area GET RK512 only The GET system function block enables you to fetch data from a SFB 14 communication partner PUT RK512 only The PUT system function block enables you to send data toa SFB 15 communication partner with dynamically changeable destination PRINT The PRINT system function block allows you to output a message text containing up to SFB 16 4 variables to a printer STATUS The STATUS system function block allows you to query the device status of a SFB 22 communication partner Further Information 138 For a detailed description of the system function blocks and their parameters see the reference manual for system function blocks System Software for S7 300 400 System and Standard Functions Note STEP 7 V11 TIA Portal The SFBs are called instructions as of STEP 7 V11 TIA Portal Information in the instruction for communication between CPU and CP 441 is available in the TIA Portal information system Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Communication via System Function Blocks 6 2 Introduction 6 2 Using the System Function Blocks Using the System Function Blocks The following sections describe what you must take into account when su
113. ceded by on the language interface ICE 1131 3 The language compilers convert these characters to the corresponding hex code Exception The character N is not permitted Example Carriage return ODH R in the format string Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 97 Basic Principles of Serial Data Transmission 2 8 Parameter Assignment Data of the Protocols Conversion Statement The figure illustrates the structure of a conversion statement gt Flag width Precision __ Representation type Figure 2 30 Schematic Structure of a Conversion Statement Flag Without Right justified output Left justified output Width Without Output in the standard representation n Exactly n characters are output up to a maximum of 255 characters are possible blanks may be added before right justified or after left justified output Precision Precision is only relevant to representation types A D F and R It is ignored otherwise Without Output in the standard representation 0 No output of decimal points and decimals in real R and floating point F format n Output of decimal point and n 1 to 99 significant places after the decimal point in the Real R and Floating point F representation types In the case of dates representation types A and D precision relates to the
114. ceiving end for trouble free data traffic Figure B 14 X27 cable CP 441 CP 340 CP 441 for RS485 operation two wire mode Note The previous figure shows the wiring if you want to make the connecting cable yourself In both RS485 mode two wire and RS422 mode four wire you can also use Siemens cables The figure below illustrates the internal wiring in the connecting cable The jumpers 2 4 and 9 11 are installed by parameter assignment of the CP Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 249 Cables B 3 X27 RS422 485 interface module Connecting cable X 27 S7 CP 441 CP 544 CP 524 CPU 928B CPU 945 CPU 948 The figure below illustrates the cable for a point to point link between a CP 441 anda CP 544 CP 524 CPU 928B CPU 945 CPU 948 for RS422 operation You require the following male connectors for the cables e At CP 441 end 15 pin subminiature D male with screw interlock e At the communication partner 15 pin subminiature D male connector with slide latch twisted pairs l l CP 441 Communication partner i l j i l l l l l i l l l 2 L T A y R A 4 l ea 9 T B RBH 1ta N1 Ce ee om Sender Receiver 4 RAY q TA b I l i E 11 l l l 111 ii IR B T B 19 l Ep lt am Receiver l is l Sender i l 8 GND GND 18 I m m i Shield I I i ae A Cable type l i
115. cessed data from being overwritten you must call the BRCV with the value 0 at the control input EN_R Table 6 10 Example of calling SFB12 BSEND using RK512 STL L 50 T DB60 DBW806 CALL SFB 12 DB62 Call for SFB 12 REQ DB60 DBX812 0 Following a rising edge at the R DB60 DBX812 1 REQ parameter the data for a length of 50 bytes starting at ID W 16 1000 data byte 5 in DB10 is sent to R_ID W 16 5 the communication partner with DONE DB60 DBX812 2 the BSEND request ERROR DB60 DBX812 3 STATUS DB60 DBW802 SD_1 p DB10 DBX5 0 WORD 1 LEN DB60 DBW806 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Communication via System Function Blocks 6 4 Using the system function blocks with the RK512 computer link Table 6 11 Example of calling SFB13 BRCV using RK512 STL SET DB60 DBX812 4 CALL SFB 13 DB63 Call for SFB 13 EN_R DB60 DBX812 4 The data is received with the BRCV request and stored in DB20 ID gt WH16 1001 starting at data byte 10 The R_ID W 16 5 LEN parameter shows the length NDR DB60 DBX812 5 of the received data 50 bytes ERROR DB60 DBX812 6 Note that the R_ID of the BRCV STATUS DB60 DBW800 must be identical to the R_ID of RD_1 p DB20 DBX10 0 WORD 2048 the BSEND LEN DB60 DBW8 04 Request Table The following table lists the data types which can be transmitted Table 6 12 Request table
116. cessor can be plugged into any slot in the rack with the following exception In all racks the power supply module occupies slots 1 to 3 depending on the width Further Information Additional information about the topic of racks is available in the installation manual S7 400 Automation Systems Installation Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 109 Mounting the CP 441 4 2 Mounting and Dismounting the CP 441 4 2 Introduction Tool 4 2 1 Mounting and Dismounting the CP 441 When mounting and removing the CP 441 you must observe certain rules You will need a 3 5 mm cylindrical screwdriver to mount or dismount the communication processor Note The CP 441 can be hot plugged and hot pulled in other words with voltage applied This means that the CP 441 can be replaced while the programmable logic controller is in operation The CP 441 is configured automatically when it is plugged in It then operates as before Installation steps Mounting the CP 441 4 2 2 To mount the communication processor in a rack proceed as follows 1 Remove the filler panel from the slot you want to use by gripping it where marked and pulling it toward you Insert the CP 441 module and tilt it downward 2 Hang the communication processor in the rack and swing it down 3 Screw down the module at the top and bottom with a torque of 0 8 to 1 1 Nm Removal steps
117. ched by means of RK512 from your S7 400 system The data is to be stored on the partner s CPU 3 or fetched by CPU 3 Parameter assignment You must specify Local gt Partner as the communication direction and enter the CPU number 3 in the Partner RK512 CPU No field Example 2 Task You want to receive data from the partner by means of RK512 identified by CPU number 2 in the RK512 frame Parameter assignment You must specify Partner gt Local as the communication direction and enter the CPU number 2 in the Local Connection is selected by means of RK512 CPU no field Example 3 Task You want data to be sent from your S7 400 system to the partner or fetched by means of RK512 The data is to be stored on the partner s CPU 3 or fetched by CPU 3 At the same time you want to use the connection to receive from the partner data identified by the CPU number 2 in the RK512 frame Parameter assignment You must specify Local Partner as the communication direction and enter the CPU number 3 in the Partner RK512 CPU No field and the CPU number 2 in the Local Connection is selected by means of RK512 CPU no field Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Configuring and Assigning Parameters for the CP 441 5 8 Firmware Updates 5 8 Firmware Updates 5 8 1 Subsequent Loading of Firmware Updates Introduction You can enhance functionality and eliminate errors b
118. classes and event numbers Event Class 1 01H Hardware fault on CP Event no Event Text To correct or avoid errors 01 01H Fault while testing operating system EPROM of CP CP defective replace CP 01 02H RAM test of CP errored 01 03H Request interface of CP defective 01 04H No interface module inserted Insert suitable interface module for CP 01 05H e Parameter memory defective Exchange CP or insert suitable interface module for e Interface submodule unplugged after parameter GP assignment 01 10H Fault in CP firmware Switch module off and on again If necessary replace module Event Class 2 02H Initialization error Event no Event Text To correct or avoid errors 02 01H No parameters Load interface parameters Parameter memory empty or has unknown contents 02 08H Parameter assignment and interface module Check parameters set for interface module incompatible 02 0FH Invalid parameter assignment detected at start of Correct invalid parameters and restart parameter communication Interface could not be parametered Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 197 Diagnostics Functions of the CP 441 8 3 Diagnostics via the error signaling area SYSTAT Event Class 3 03H Error in parameter assignment of SFB Event no Event Text To correct or avoid errors
119. ction setup Response message frame header User data Connection release Figure 2 15 Data traffic when fetching with a response frame Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 5 Data transmission with the RK512 computer link Fetching data The GET request is executed in the following sequence e Active partner Sends a GET frame This contains a frame header e Passive partner Receives the frame checks the header fetches the data from the CPU and acknowledges this with a response frame containing the data This contains the data e Active partner Receives the response frame If the volume of user data exceeds 128 bytes the active partner sends a continuation GET frame This contains byte 1 to 4 of the frame header e Passive partner Receives the continuation GET frame checks the frame header and acknowledges this with a continuation response frame containing further data If there is an error number not equal to 0 in the 4th byte the response frame does not contain any data If more than 128 bytes are requested the extra bytes are automatically fetched in one or more continuation frames Note If the CPU receives an error GET frame or if an error has occurred in the frame header the communication partner enters an error number in the 4th byte of the response frame This does not apply when prot
120. ction to the Communication Partner 9 5 Configuring the Connection to the Communication Partner Note Configuring connection in STEP 7 TIA Portal The procedure for configuring connections in STEP 7 TIA Portal is described in detail in the information system of the TIA Portal Configuring connection in STEP 7 In STEP 7 you configure a point to point connection between your CP 441 and the communication partner using NETPRO Proceed as follows 1 Enter the connection in the connection table 2 Set the object properties of the connection Entering the connection for interface 1 in the connection table Proceed as follows 1 Return to the lt Offline gt Project project window and double click the CPU in the SIMATIC 400 station Result The Connections object connection table appears on the right 2 Double click this icon The Configuring Connections dialog appears Choose Insert gt Connection to insert your connection in the connection table 3 In the New Connection dialog select Unspecified as the communication partner and enter PTP Connection as the connection type Then click OK to exit the dialog 4 Set the object properties of the connection Inthe Object Properties dialog set the specific properties of the connection for interface 1 Inthe Object Properties dialog change the name of the communication partner from Unspecified to an appropriate name and select the PTP CP Rack Slot
121. d If there is no firmware loaded on the CP 441 the display shows This can occur for example if a firmware update was canceled The original firmware is deleted prior to the cancellation You have to upload firmware to the module before it can be restarted Point to point Link CP 441 Installation and Parameter Assignment 134 Manual 04 2012 A5E00405449 03 Configuring and Assigning Parameters for the CP 441 LEDs 5 8 Firmware Updates 4 Click on the Find File button to select the firmware to be loaded UPD Note The basic firmware consists of three files each with a UPD extension Select only the file called HEADER UPD for the basic firmware Result The version of the firmware you select is displayed under Status of selected firmware Click on the Load Firmware button to start uploading to the CP 441 You are prompted for confirmation The upload procedure is canceled immediately if you click on the Cancel button Note Before the basic firmware is deleted from the module the CP 441 checks the order number of the firmware to be downloaded in order to ensure that the firmware is approved for the CP 441 Result The new firmware is loaded into the operating system memory of the CP 441 Done shows progress in bar graph form and as a percentage LEDs during the download of a firmware update Table 5 5 LEDs for firmware update Status INTF FAULT TXD RXD
122. d a detailed description in Chapter Managing the Parameter Data Page 117 of this manual Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 107 Commissioning the CP 447 Configuring the Connections for the CP 441 Configuring the connections for the CP 441 means connecting the communication end points within a point to point network in the project of your programmable controller Connections are configured using the STEP 7 software connection configuration table You can find a detailed description in Chapter Connection Configuration Page 122 of this manual Creating a User Program for the Communication Processor 108 CP programming includes the implementation of the CP in the STEP 7 user program of your CPU Program your CP using the language editors of the STEP 7 software You can find a detailed description in Chapter Communication via System Function Block Page 137 of this manual and in the Programming with STEP 7 manual A comprehensive programming example is available in the chapter Programming Example or System Function Blocks Page 217 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Mounting the CP 441 4 4 1 CP 441 slots Introduction There are no specific slots reserved for communication modules in the rack of the S7 400 automation system Positioning the CP in the Rack The communication pro
123. d in the frame header This enables the RK512 to achieve a higher Hamming distance of 4 than that with 3964R Transmission integrity with RK512 Very high data security using RK512 e The Hamming distance with the RK512 and 3964R is 4 The Hamming distance is a measure of the integrity for a data transmission e Using the RK512 computer link ensures high transmission integrity on the transmission line because RK512 uses the 3964R procedure for data transport e Further processing at the communication partner is ensured because the RK512 interpreter checks the additional length specification in the header and after storing the data in the destination data area of the communication partner generates a frame acknowledging the success or failure of the data transport e The RK512 computer link independently guarantees the correct use of the 3964R procedure and the analysis addition of the length specification as well as the generation of the response frames There is no user handling All you need to do is evaluate the positive negative final acknowledgment Performance limits with RK512 e Using the RK512 computer link provides maximum data security Another advantage for example is the use of other block check mechanisms such as CRC checks Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 31 Basic Principles of Serial Data Transmission 2 4 Data Transmission with the 3964 R Pr
124. d the 16 F9C8 leader for interface 2 are non variables The rest of the ID code corresponds to event class and event number of the events By clicking the Help on Event button you can display the help text on the event text If you click the Update button the current data is read from the CP 441 By clicking the Help on Event button you can display a help text on the selected diagnostic event with information on error correction Diagnostics via the error signaling area SYSTAT Page 195 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Diagnostics Functions of the CP 441 8 6 Introduction 8 6 Diagnostic interrupt Diagnostic interrupt The CP 441 can trigger a diagnostics interrupt on the assigned CPU thus indicating a malfunction of the CP 441 You can specify during parameter assignment as of STEP 7 V5 0 SP2 whether the CP 441 is to trigger a diagnostics interrupt or not in the event of serious errors Diagnostic interrupt NO is the default Diagnostics interrupt In the event of a fault the CP 441 provides diagnostic information on the S7 400 rear panel bus In response to a diagnostics interrupt the CPU reads the system specific diagnostic data and enters it in its diagnostic buffer You can read the contents of the diagnostic buffer on the CPU using a programming device When a diagnostic interrupt event occurs the INTF LED red lights up In addition the
125. ddressed interface is parametered 05 1AH RK512 only Error sending a command frame See the remedy for the previous error number An associated procedure number has just been entered in STATUS 05 1BH Only for printer drivers Correct the specified precision in the conversion Precision invalid statement The precision is initialized with a dot prefix to identify and limit the width example 2 to output the decimal point and two decimals Precision is only relevant to representation types A D F and R It is ignored otherwise 05 1CH Only for printer drivers Correct the specified send variable Variable invalid Variable length incorrect incorrect type Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 201 Diagnostics Functions of the CP 441 8 3 Diagnostics via the error signaling area SYSTAT Event Class 6 06H Error processing a partner request only with RK512 Event no Event Text To correct or avoid errors 06 01H Error in 1st command byte not 00 or FFH Header layout error at partner Check for malfunction at partner device possibly by using interface test device switched into the transmission line 06 02H Error in 3rd command byte not A 0 or FFH Header layout error at partner Check for malfunction at partner device possibly by using interface test device switched into the transmission line 06 03H Er
126. e Transmission Integrity with the ASCII Driver Data Integrity When Using the ASCII Driver e When data is transmitted via the ASCII driver there are no data integrity precautions other than the use of a parity bit can also be canceled depending on how the character frame is set This means that although this type of data transport has a very efficient throughput rate security is not guaranteed Using the parity bit ensures that the inversion of a bit in a character to be transmitted can be recognized If two or more bits of a character are inverted this error can no longer be detected To increase transmission integrity a checksum and length specification for a frame can be employed These measures must be implemented by the user e A further increase in data integrity can be achieved by means of acknowledgment frames in response to send or receive frames This is the case with high level protocols for data communication see ISO 7 layer reference model Transmission Integrity with 3964R 30 Enhanced Data Integrity with the 3964R Procedure e The hamming distance with the 3964R is 3 This measures the integrity of data transmission e The 3964R procedure ensures high transmission integrity on the data line This high integrity is achieved by means of a fixed frame set up and clear down as well as the use of a block check character BCC Two different procedures for data transmission can be used either with or
127. e TYP byte E E Data block Data block DB 1 0 1 DB 1 0 Flag Data block MB irrelevant 0 1 DB 1 0 Inputs Data block IB irrelevant 0 1 DB 1 7 0 Outputs Data block QB irrelevant 0 1 7 DB 1 0 Counters Data block C irrelevant 0 1 DB 1 0 Times Data block T irrelevant 0 1 7 DB 1 7 0 This value is dictated by the CPU that you use Abbreviations used in the table S TYPE source type S DBNO source data block number S Offset source start address length source length D TYPE destination type D DBNO destination data block number D Offset destination start address Point to point Link CP 441 Installation and Parameter Assignment 148 Manual 04 2012 A5E00405449 03 Communication via System Function Blocks 6 3 3 What To Do 6 3 Using the System Function Blocks with the 3964 R Procedure Data transmission with 3964 R using BSEND and a receive mailbox This type of data transmission has the advantage that no programming is necessary in the user program of the communication partner Note that at the receiver you cannot tell when a transmission is taking place Therefore the receiving CP 441 cannot prevent unprocessed data from being overwritten at the receiver The data is transferred even when the receiving S7 CPU is in STOP mode The receiving CPU determines data consistency CPU 412 413 16 bytes CPU 414 417 32 bytes Further Information You will find more information on d
128. e When there is a match the CP 441 forwards the received data over this connection Note The number of connections per interface via which you can send telegrams is limited to eight The fact that the CPU numbers in the telegram header are limited to 1 to 4 limits the number of connections via which you can receive telegrams at a single interface to a maximum of four In the Local box a CPU number that has already been assigned cannot be assigned again for a different connection at the same interface If you have set 2 Partner gt Local or 3 Local Partner as the communication direction for a connection via one interface you must enter another CPU no in the Local field for another connection for receiving data or if you only want to send data you must select 1 Local gt Partner as the communication direction Partner RK512 CPU no When sending telegrams BSEND PUT GET enter CPU no 1 to 4 here The CP 441 compares the CPU number you have set here with the one specified by byte 10 of the header of the sending RK512 frame This makes it possible via this connection to address one of four different recipients at the partner Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 131 Configuring and Assigning Parameters for the CP 441 5 7 Procedure in the Properties PtP Connection dialog Examples 132 e Example 1 Task You want data to be sent or fet
129. e enter the rack the slot and the order number of the communication processor STEP 7 then automatically assigns an address to the CP The CPU is now able to find the communication processor in its slot in the rack by way of its address Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 113 Configuring and Assigning Parameters for the CP 441 Further Information The procedure for configuring S7 400 modules is described in detail in the STEP 7 manual In addition the STEP 7 online help system will provide you with all the assistance you need when configuring an S7 400 module Installing the Parameter Assignment Interface The CP 441 Configuration Package for Point to Point Communication parameter assignment interface together with the programming example can be found on the CD To install the engineering tool 1 Insert the CD into the CD drive of your programming device PC 2 To open the dialog for installing software under Windows double click the Add and Remove Programs icon in the Control Panel 3 In the dialog select the CD drive and the Setup exe file and start installation 4 Follow the step by step instructions of the Setup program Parameter assignment with STEP 7 TIA Portal V11 114 The parameter assignment interface has already been integrated STEP 7 TIA Portal as of V11 no installation required You can download the respective example projects from the
130. e CPU is back to RUN mode are signaled via the diagnostics interrupt Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 215 Diagnostics Functions of the CP 441 8 6 Diagnostic interrupt Point to point Link CP 441 Installation and Parameter Assignment 216 Manual 04 2012 A5E00405449 03 Programming Example for System Function Blocks 9 9 1 Introduction Objective Prerequisite General Information The programming example in this chapter describes how to create a project and by means of a simple data transfer operation the basic usage of the system function blocks for operating the CP 441 communication processor The individual steps described for configuring and programming should make it easier for you to create a project Because only the general procedure is presented here and the sequence of the individual steps may vary over the course of time in the individual STEP 7 packages you should also consult the current documentation for these packages At the end of the chapter you will find an example of how to program the output of message texts on a printer The programming example e aims to show the most important functions e is clear and easy to understand e can easily be extended for your own purposes The example shows how a connection to a communication partner can be configured using the system function blocks BSEND and BRCV for sending and receiving data r
131. e Communication Processor 3 Assigning the Communication Processor Parameters 4 Connection configuration of the communication processor 5 Creating a User Program for the Communication Processor Mounting the CP 441 Mounting the CP 441 involves inserting it into the mounting rack of your programmable controller and plugging in the interface submodules You can find a detailed description in Chapter Mounting the CP 441 Page 109 of this manual Configuring the Communication Processor The CP configuration includes its entry in the configuration table Configure your communication processor using the STEP 7 software You can find a detailed description in Chapter Configuring and Assigning Parameters for the P 441 Page 113 of this manual Assigning the Communication Processor Parameters Parameter assignment for the communication processor involves creating the specific parameters of the protocols and configuring message texts for printer output You set the parameters of the CP 441 with the CP 441 Configuration Package for Point to Point Communication parameter assignment interface You can find a detailed description in Chapter Configuring and Assigning Parameters for the P 441 Page 113 of this manual Backing up Configuration Data A backup of CP parameter data includes the storage of parameters their download to the CPU and transfer to the CP Backup your CP configuration using the STEP 7 software You can fin
132. e Increase the value of the Cyclic load due to communication parameter in the CPU screen form and e Call BRCV in the time OB or call BRCV more frequently in the cycle Contents of the diagnostic buffer on the CP cannot be read with a programming device Increase the value of the Minimum cycle time parameter in the CPU screen form Cycle A newly inserted CP is not assigned parameters Increase the value of the Transfer parameters to modules parameter in the Startup CPU screen form Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 143 Communication via System Function Blocks 6 3 Using the System Function Blocks with the 3964 R Procedure 6 3 Using the System Function Blocks with the 3964 R Procedure 6 3 1 Applications Introduction If you are using the 3964 R procedure as your transmission procedure you can transmit data from your S7 400 programmable controller to a communication partner Data Transmission to a Communication Partner Using 3964 R The figure below illustrates how data is sent to a communication partner Your programmable controller Communication partner active 7 400 S CP 441 SFB BRCV SFB BSEND gt 3964 R EE S gt protocol A Receive mailbox DB Figure 6 1 Sending Data to a Communication Partner with the 3964 R Procedure Point to point Link CP 441 Installation and Parameter Assignment 144 Manu
133. e STATUS system function block Error Signaling Area SYSTAT The error signaling area SYSTAT is an error area which is available for every interface ID number The SYSTAT records all errors events which can occur during data transmission on an interface Note Because the STATUS request is executed asynchronously to the rest of the requests running at an interface an SFB with a specific R_ID cannot be assigned to the error messages This means that although SYSTAT can display which errors have occurred at an interface it cannot show which SFB call R_ID number triggered the error Errors Events The SYSTAT messages are entered in bytes 2 to 15 of the LOCAL parameter when the STATUS SFB is called In addition to the error byte byte 2 the first six errors events are displayed Error event 1 is the oldest If other error events occur these cannot be reported until the old entries are deleted The error signaling area must therefore be deleted in good time This is done when the STATUS SFB is called The errors events are stored as follows e Byte 0 Operating state of CP 02H for RUN 05H for defective e Byte 1 Reserved e Byte 2 Bit 0 F Enter error in SYSTAT Bit 1 U Error overflow Bit 2 B Break e Byte 3 Reserved e Byte 4 5 Event 1 e Byte 6 7 Event 2 e Byte 8 9 Event 3 e Byte 10 11 Event 4 e Byte 12 13 Event 5 e Byte 14 15 Event 6 Point to point Link CP 441 Installation and Parameter Assignment Manual 0
134. e Waiting for parameterized number 2 of characters S 5 Message frame entered Y in receive buffer uw Character delay time expired Enter error in SYSTAT error signaling area Figure 2 23 Sequence of receive operation with Fixed Message Frame Length end criterion Point to point Link CP 441 Installation and Parameter Assignment 66 Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 6 Data Transmission with the ASCII Driver Receive Buffer on CP 441 The CP 441 receive buffer accommodates 4096 bytes During the parameter assignment you can specify whether overwriting of data in the receive buffer should be prevented You can also specify the value range 1 to 250 for the number of buffered receive frames The receive buffer on the CP 441 is a ring buffer e If several frames are entered in the receive buffer of the CP 441 the following applies it is always the oldest one that is sent from the CP 441 to the CPU e If you only ever want to send the most recent frame to the CPU you must set the value 1 for the number of buffered frames and deactivate the overwrite protection Note If continuous reading of the received data in the user program is interrupted for a certain time you may find when the receive data is requested again that the CP 441 first sends older frames before the CPU receives the most recent one At the time of interruption the old frame had alread
135. e is started if the volume of data exceeds 128 bytes The process is the same as for SEND PUT frames If more than 128 bytes are sent the extra bytes are automatically transmitted in one or more continuation frames The figure below shows the data transmission sequence when sending a continuation SEND PUT frame with a continuation response frame CP 441 Communication partner Continuation SEND PUT message frame Start code 02H STX r gt ued Pos acknowledg a DLE SaR ment 10H Continuation message frame FFH ist byte gt 00H K 2nd byte gt Message SEND PUT request 41H 3rd byte gt frame header Data block 44H 4th byte gt 129th data byte S 5th byte gt 130th data byte 6th byte W _ User data nth data byte nth byte gt End code 10H SS DLE gt End code 03H ETX gt Connection with block check only m BCC release Pos acknowledgement 10H lt DLE Continuation response message frame Start code 02H STX Connection Pos acknowledgment 10H o DLE setup Continuation response message frame FFH lt 1st byte Response 00H 2nd byte lt __ 3rd byte eee 00H y frame header Error number 00H m 4th byte End code 10H DLE End code 03H ETX Connection with block check only pe BCC release Pos acknowledgement 10H DLE y
136. e not received during printer output An exception to this are any data flow control characters that have been configured Any characters received are not adopted Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 7 Data Transmission with the Printer Driver Message Text Output The figure below illustrates the sequence of operations at printer output Wait for a print job ne o 72 wn Q Q Q a Print job received 3 o o a u The number of the Print editing and message text is obtained output of the a from the parameters message text FORMAT and SD_1 to SD_4 in the PRINT SFB Figure 2 25 Flow chart of printer output See also Parameters for the communications protocols Page 115 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 73 Basic Principles of Serial Data Transmission 2 8 Parameter Assignment Data of the Protocols 2 8 Parameter Assignment Data of the Protocols Introduction By selecting different protocols you can adjust your CP 441 communication processor to suit the properties of the communication partner The sections that follow describe the parameter assignment data of the 3964 R procedure RK512 computer link ASCII driver and printer driver 2 8 1 Parameter assignment data of the 3964 R procedu
137. e number setting 5 R REAL DWORD 0 12E 04 8 Floating point without exponent S STRING Text output Text strings TO TIME DWORD 2d_3h_10m_5s_250ms Max 21 Duration U BYTE 255 Max 3 Integer range unsigned WORD 65535 Max 5 DWORD 4294967295 Max 10 X BOOL 1 1 Binary format BYTE 11101100 8 WORD 11001 16 16 DWORD 11001 32 32 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 99 Basic Principles of Serial Data Transmission 2 8 Parameter Assignment Data of the Protocols Representation Associated data Standard Width of the Standard Description type type Representation Representation Y DATE_AND_TIME_ 10 06 1992 25 Date and time OF_DAY DT 15 42 59 723 Z TIME_OF_DAY 15 42 59 723 12 Time DWORD 1 If there is no message text number or system time in these representation types 6 characters appear in the printout instead the CP 441 does not keep the time 2 The P representation type is only permitted in the format string P is not permitted in the configured message texts 3 The current time and date must be read first by means of the READ_CLOCK system function SFC 1 and stored in the user memory flag data Output by Means of Message Text Number N 100 You use the N representation type when you want to start printing message texts stored on the CP 441 ANYPOINTER is the only data type permissib
138. e screen while you are working with the programming software Online Offline When you are online there is a data connection between the programmable controller and programming device when you are offline there is no data connection between them Operand An operand is part of a STEP 7 instruction and states with which unit the process should execute something It can be addressed both absolutely and symbolically Operating mode The SIMATIC S7 programmable controllers have three different operating modes STOP START UP and RUN The functionality of the CPU is different in the various operating modes Operating system of the CPU The operating system of the CPU organizes all the functions and process of the CPU that are not connected to a special control task Parameter assignment Parameter assignment refers to the setting of a module s behavior Parameters Parameters are values that can be allocated There are two different types of parameters block parameters and module parameters Point to point link In point to point link the communication processor forms the interface between a programmable controller and a communication partner Procedure Procedure refers to the process of a data transmission according to a specific protocol Point to point Link CP 441 Installation and Parameter Assignment 262 Manual 04 2012 A5E00405449 03 Glossary Process image The process image is a special memory area in the programmab
139. eck for malfunction at partner device possibly by request has not enough data using interface test device switched into the transmission line 208 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Diagnostics Functions of the CP 441 8 4 Error Numbers in the Response Message Frame 8 4 Error Numbers in the Response Message Frame Response frame If you are working with the RK512 computer link and an error occurs at the communication partner in a SEND PUT or GET frame the communication partner sends a response frame with an error number in the 4th byte Error Numbers in the Response Frame The table below shows how the error numbers in the response frame REATEL are assigned to the event classes numbers in the STATUS output of the communication partner The error numbers in the response frame are output as hexadecimal values Table 8 10 Error messages in the response frame with RK512 REATEL SYSTAT Error Messages Event Class Event Number OAH 0301H Error at the partner or SIMATIC S5 as partner 0303H e Source destination type not permissible or 0407H e Memory error in partner programmable controller or 0905H e Error notifying CP CPU at the partner or e Partner programmable controller is in STOP state OCH 0301H Memory access error at the partner no memory or 0302H SIMATIC S5 as partner 0607H e Incorrect area at status word or 0609
140. ect the cable shield with the GND as this could destroy the submodules GND must always be connected on both sides pin 8 otherwise the submodules could again be destroyed The following pages contain examples of cables for a point to point link between the CP 441 and S7 modules or SIMATIC S5 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 247 Cables B 3 X27 RS422 485 interface module X 27 connecting cables S7 CP 441 CP 441 CP 340 The figure below illustrates the cable for a point to point link between a CP 441 anda CP 441 CP 340 for RS422 operation You require the following male connectors for the cables 248 At CP 441 end 15 pin sub D male connector with screw locking At the communication partner 15 pin sub D male connector with screw locking CP 441 Communication partner I ti kg oo Se or ag E E l I I l I I 201 I T A R A 1 4 __ _ ___ ____1___ sm rt ar 9 l IT B R B i tat l l m yl oM Sender i l i i Receiver f 4 1 IRIA 5 TA Vat I rey 4 11 1 it R B _ T B 1_9 l i izi 1 fy l C e iha i i Receiver ii i Sender i 8 GND GND ils 8 L4 H Ta I i l Shielding 1 i t l i Cable type l l l Enclosure shield LIYCY 3 x 2 x 0 14 1 Enclosure shield I l T A T B and R AYR B l twisted pair l 1 To ensure interference
141. ed ID if you have programmed the SFBs with certain IDs Communication direction Specify the direction in which communication is to take place by selecting the appropriate option see also the sections entitled One Connection Configured and Several Connections Configured Interface Interface The CP 441 2 has two channels the interfaces IF1 and IF2 via which the point to point links can be set up Select the channel used for the configured connection Protocol Various protocols can be used to send data via point to point links You specified the protocol when you configured the module Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 129 Configuring and Assigning Parameters for the CP 441 5 7 Procedure in the Properties PtP Connection dialog Parameter Description Connection is selected by If you have selected Partner gt Local or Local Partner as the communication direction means of RK512 CPU no enter the CPU number 1 to 4 by means of which your partner can address this connection RK512 CPU no If you have selected Local gt Partner or Local Partner as the communication direction enter the CPU number 1 to 4 to which the connection goes Note If your partner is a CP 441 you also have to set the PtP connection properties for the partial connection in the partner station One connection configured If yo
142. eeeeeeaeeeseeaaeeeeetenaneeeeeaaes 176 6 5 2 Controlling the RS232 accompanying signals ccceeeeeeeeeeeeeeeeeeeeeeeeeeeaeeeseeaeeeeeeenaeeeeseaes 6 6 Using the system function blocks with the printer Criver c cece eeeeeeeeeeeeeeeeeeeenaeeeeeenaeeeeeeeaas 181 6 7 SUMMA earainn aeaea iadaa aaa aai eA cnt edade celle es ine Eaa A Aae aa a aAA TANAR EE e 7 Start up Characteristics and Operating Mode Transitions of the CP 441 cceccccsssseeeeessessseeeeeeeees 7 1 Startup Characteristics of the CP 441 oo ccc cccccccesecneeceeeeceecseeectaecseenecsseeseeeeeeseesaeeeeenaenes 7 2 Operating Mode Transitions of the CP 441 ooo cece ccecce ents ceeeeentecsaeceeesecaeeseeeesaseeenaeens 186 8 Diagnostics Functions of the CP 441 ooo ceseeseeeeneeeneeseeeseeeseeesseesseeseseeeseesseeaeaneesaeesaeesanaeeeeseaeeneaseneeeas 8 1 Diagnostics via the display elements of the CP 441 000 ee cee eeeenneeeeeeenaeeeeeeaeeeseenaeeeeeeeaas 189 8 2 Diagnostics Messages of the System Function Blocks 0 cccsceeeeeeeeeeeeceeeeeeenaeeeeeenaeeeeeeaaes 8 3 Diagnostics via the error signaling area SYSTAT cccccecceeeeeceeseeeeeeeeneeeeeeeeaeeeeeeaeeeeeeneeeeeseaas 8 4 Error Numbers in the Response Message Frame ccccceeeeeeeeeeeneeeeeeennaeeeeeenaeeeseenaeeeeseaaes 209 8 5 Diagnostics via the diagnostic buffer of the CP 441 oe cece eeente eee eeeaeeeeeeaeeeeeenaeeeeeeeaas 8 6 Diagnostic imterr pt cstseeitcsedeciicctedees hesieti
143. eeeeeeesesecsteaeeeeeeneees 1 4 3 Properties of the X27 RS422 485 interface module 1 5 Installation GUIGEIINGS sneen aaia naaa ea aa A aa EA AE ana A Eaa TEES 2 Basic Principles of Serial Data TransmisSiOn ccccccssssssseeeeeeeessseeneeeeeeeeeesseeneaeeeeeeeeessseneaseeeeeesnnsene 23 2 1 Serial transmission of a Character ccceceeccececeeeeeeeceecaeceeeeeeeseceaeaaeceeeeeeesecsecaeeeeeeeseseesenaeeseess 2 2 Transmission Procedure with a Point to Point Connection cceccecceceeeeeeeeeeneeeeeeeeeeeeeeeees 27 2 3 TRANSMISSION integrity iis cad watncccctecaacasadzekecscnanaacuttuanacedacaadasadcedscaceiaraandeathanedtseaanaaeaneseadenamnaunannens 29 2 4 Data Transmission with the 3964 R Procedure 2 4 1 Control Characters c cccccccceeeeeeeeenceeeeeeeececeeaeeeeeeeeeseceaeaeceeeeeeeeeedaaeaeeeeeeesecaeaeeeeeesetecsieaeenees 2 4 2 BIOCK CHECKSUM lt acieessaiectee innur dads eset ane ed ee eee eee ead 2 4 3 Sending data with 3964 R cceccceceeeeceesceceneeeeeaeeeeaeeceeeeseaeeesaaeceeeeseaeeeesaaeseeeeeeeaeeeseaeessaeesenees 2 4 4 Receiving data with 3964 R cccscceceeceseeceeneeceeeeecaeeeeaaeeseneeceaeeeseaeseeaaeseceeeeaesesaaeeeaaeesenes 2 4 5 Handling Erroneous Data eee eceee ener erent ee erent ee etnies eee ee ee eeee ee eieee ee eaeeeeenaeeeeeaeeeeeeea 2 5 Data transmission with the RK512 Computer link ccccceeeeeeeeneeceeeeeeeeeeeeaeceeeeeeeesesecseeaee
144. elevant O 1 7 DB 3 255 0 255 Outputs Data block QB Irrelevant 0 1 DB 3 255 0 255 Counter Data block Z Irrelevant 0 1 7 DB 3 255 0 255 Timers Data block T Irrelevant 0 1 DB 3 255 0 255 This value is dictated by the CPU that you use Abbreviations used in the table S TYPE source type S DBNO source data block number S Offset source start address length source length D TYPE destination type D DBNO destination data block number D Offset destination start address Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 163 Communication via System Function Blocks 6 4 Using the system function blocks with the RK512 computer link Specifications in the frame header of the RK512 protocol The following table shows the specifications in the RK512 frame header Data destination DB Table 6 19 Specifications in the frame header of the RK512 protocol Sending data to an S5 communication partner or third party device with RK512 data destination DB Source BSEND from S7 To Destination S5 Communication Partner or Third party Device Frame header Bytes 3 4 Bytes 5 6 Bytes 7 8 Command D DBNO D Offset Number in mode Data block Data block AD DB DW Words Flag Data block AD DB DW Bytes Inputs Data block AD DB DW Bytes Outputs Data block AD DB DW Bytes Counter Data block AD DB DW Words Timers Data block AD DB DW Words The source
145. em and Standard Functions for S7 300 400 http support automation siemens com view en 1214574 The S7 CPU s offer systems and standard functions which are integrated in the operating system You can use these functions when writing programs in one of the languages that is STL LAD and SCL The manual provides an overview of the functions available with S7 and for reference purposes detailed interface descriptions which you require in your user program Note STEP 7 TIA Portal All necessary information is also available in the STEP 7 TIA Portal information system Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 257 Literature on SIMATIC S7 Point to point Link CP 441 Installation and Parameter Assignment 258 Manual 04 2012 A5E00405449 03 Glossary Address The address indicates the physical storage space and enables direct access to the operand that is stored under this address Block Blocks are parts of the user program that are separated by their function structure or purpose STEP 7 has the following blocks e Code blocks FB FC OB SFB SFC e Data blocks DB SDB and e user defined data types UDT Block call A block call is the branching of the program processing into the called block Block parameter Block parameters are place holders within multiple use blocks which are supplied with updated valves during the callin
146. ent is preceded by a synchronization impulse or start bit The length of the start bit transmission determines the clock pulse The end of the character transmission is signaled by the stop bit As well as the start and stop bits further declarations must be made between the sending and receiving partners before serial transmission can take place These include e The data transmission rate e Character and acknowledgment delay times e Parity e Number of data bits e Number of stop bits Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 7 Serial transmission of a character Character frame Data is transmitted between the communication processor and a communication partner via the serial interface in a character frame Various data formats are available for the character frame You can set the format for data transmission with the CP 441 Configuration Package for Point to Point Communication parameter assignment interface The figure below shows examples of different data formats for a 10 bit character frame 7 data bits 1 start bit 7 data bits 2 stop bits Signal state 1 Signal state 0 Q iw as N 7 data bits 2 stop bits 7 data bits 1 start bit 7 data bits 1 parity bit 1 stop bit Signal state 1 Signal state 0 J l J l baa aa a t iw oO 7 data bits 1 pari
147. ent interface so that the communication partner can receive the last characters of the frame in their entirety before RTS and thus the send request is taken away The data output waiting time must be set so that the communication partner can be ready to receive before the time elapses Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 69 Basic Principles of Serial Data Transmission 2 6 Data Transmission with the ASCII Driver Time Diagram 70 The figure illustrates the chronological sequence of a send request ON RIS ar ON GIS pri 1 TXD Request to send RTS ON Partners CTS ON Data output waiting time elapsed gt Send o Data output waiting time Send completed Time to RTS OFF elapsed Partners CTS OFF Time to RTS OFF Figure 2 24 Time diagram of automatic operation of the RS232 accompanying signals Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 6 Data Transmission with the ASCII Driver Software Handshake Hardware Handshake Handshaking controls the data flow between two communication partners Handshaking ensures that data is not lost in transmissions between devices that work at different speeds There are essentially two types of handshaking e Software handshake e g XON XOFF e Hardware handsha
148. ent unprocessed data from being overwritten at the receiver Using the Response to a CPU Stop parameter indicate whether data should continue to be transmitted when the S7 CPU is also in STOP mode The parameter is only available for the CP 441 2 as of 6ES7 441 2AA04 0AE0 The receiving CPU determines data consistency CPU 412 413 16 bytes CPU 414 417 32 bytes On Your Programmable Controller With this type of programming the source data and the destination data are specified at the sender In the S7 user program of the CPU you must program the BSEND system function block SFB 12 For the SD_1 parameter data type ANY specify which data source is to be passed on Example p DB10 DBX5 0 WORD 1 The length is not evaluated with data type ANY since the length of the data to be sent is defined in the LEN parameter For the destination data area you must specify a data block DB between 1 and 255 decimal Specify the destination data area of the communication partner in the R_ID parameter The value is accepted once during CPU startup and cannot subsequently be changed The R_ID parameter DWORD is structured as follows Byte 1 ID for data type DB 1 hexadecimal Byte 2 Not relevant any value Byte 3 Offset 0 255 decimal in words Byte 4 DB No 1 255 decimal The parameters of the destination data area are transmitted to the communication partner in the RK512 frame header Please note that the length o
149. entify modules uniquely on the network As of order number 6ES7 441 xAA05 0AE0 the I amp M data I amp M 0 and I amp M 1 are available on the CP 441 For writing of I amp M 1 data plant designation HID and location ID LID you need at least version V5 5 SP3 when using STEP 7 and at least SP2 Update 3 with HSP0025 HSP_V11SP2_0025_001_S7400_CP441_2 0 when using STEP 7 V11 Note Only I amp MO data are supported in the first delivery stage of the CP 441 6ES7 441 2AA05 OAEO This limitation will no longer apply with a future delivery stage FW version Reading the identification data You can display the 1 amp M data provided by the module with the online function PLC gt Module Information The following subsets are output by the I amp M 0 1 amp M 1 data in the General tab e I amp M 0 data Device name order number of module Hardware revision product version of module Software revision firmware version of module e I amp M 1 data HID plant designation of the module LID location ID of the module The following subset is output by the I amp M 0 data in the Identification tab e Manufacturer identification SIEMENS AG e Device serial number serial number of the module e Profile ID F6 00 hex Internal parameter generic device according to PROFIBUS DP e Profile specific type 00 04 hex Internal parameter communication module according to PROFIBUS DP Point to point Link CP 441 Inst
150. er of data Note The RK512 protocol only allows an even number of data to be sent If you specify an odd number of data an additional filler byte with a value of 0 is sent at the end Data transmission with RK512 to the CP 441 communication partner If your partner in the link is a CP 441 you have the following options e To transmit data you can program a BSEND at the sender and a BRCV at the receiver indicated by the data type DX in the RK512 frame header This type of data transmission has the advantage that using the BRCV you can interpret the NDR parameter to establish when the complete data was received and the EN_R parameter to prevent unprocessed data from being overwritten at the receiver e To transmit data you can program a BSEND at the sender only with no programming at the receiver indicated by the data type DB in the RK512 frame header If you use this type of data transmission you do not need to do any programming in the user program of the communication partner Note however that at the receiver you cannot tell when a transmission is taking place Therefore the receiving CP 441 cannot prevent unprocessed data from being overwritten at the receiver Point to point Link CP 441 Installation and Parameter Assignment 152 Manual 04 2012 A5E00405449 03 Communication via System Function Blocks 6 4 Using the system function blocks with the RK512 computer link 6 4 2 Sending data with RK512 to the CP 44
151. er of the conversion statement or the standard representation with characters 05 0ODH Only for printer drivers Correct the specified width of the variable in the Width in conversion statement too small or too great conversion statement on the basis of the variable s maximum number of characters in text based representation types A C D S T Y Z Only as many characters as will fit in the specified width appear in the printout the text is truncated to this width In all other cases characters are output corresponding to the width 05 O0EH With ASCII driver only Extend the delimiters in the transmission buffer at An error occured while sending The defined the desired point or select a shorter frame length for delimiters did not occur within the maximum allowed automatic appending length or in the case of automatic appending the maximum allowed transmission length was exceeded 05 OFH Number of requests that can be processed Change your STEP 7 program so that fewer simultaneously too great requests can run simultaneously 05 10H Area occupied resource Repeat the request 05 11H Length not permissible for this request type Divide up the data to be transmitted into several requests only Mismatch between s source an ain the permissible values from the reques 05 12H RK512 only Mi tch betw SFB d Obtain th issibl l fi th t destination parameters tables ata type error g ain the permissible data types and their 05 13H
152. erface You can send data via all eight connections active requests BSEND You can only receive data passive requests BRCV via only one connection however since the ASCII driver and the 3964 R procedure do not send any address information with the data In the Communication direction field of the Properties PtP Connection dialog you have to specify whether you want to send and or receive data via the selected connection 1 Local gt Partner For the connections via which you send data No other settings are necessary 2 Partner gt Local For the connection via which you receive data No other settings are necessary 3 Local Partner For the connection via which you send and receive data No other settings are necessary Note Data can only be received via one connection for each interface If you have set 2 Partner gt Local or 3 Local Partner as the communication direction for a connection via one interface you can select 1 Local gt Partner as the communication direction Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Configuring and Assigning Parameters for the CP 441 5 7 2 5 7 Procedure in the Properties PtP Connection dialog Properties PtP Connection dialog procedure with RK512 computer link Properties PtP Connection dialog In addition to making the entry in the connection table you also have to set specific properti
153. es Dynamically changeable source definition Yes Printer Output Table 6 37 The following applies to the output of message texts on a printer Communication type CP 441 Sending Data to the Printer System function block at CP 441 PRINT Maximum length of transmittable data format string and variables 400 bytes Point to point Link CP 441 Installation and Parameter Assignment 184 Manual 04 2012 A5E00405449 03 Start up Characteristics and Operating Mode 7 Transitions of the CP 441 7 1 Startup Characteristics of the CP 441 Start up behavior The CP 441 start up is divided into two phases e Initialization CP 441 in POWER ON mode e Parameter assignment Initialization As soon as the CP 441 is connected to the power supply the firmware on the CP 441 is prepared for operation after a hardware test program has been executed Parameter Assignment Note During parameter assignment the CP 441 receives the module parameters which have been assigned to the current slot The CP 441 is now ready for operation Please note the following for the start up behavior of the CP 441 Note After power on the CP 441 requires several seconds for initialization and hardware and memory testing before it is ready for operation The parameter assignment attempts made by the CPU during this phase are aborted and an error is entered in the diagnostic buffer SDB processing error error class 1 and the SDB is ident
154. es for each point to point connection If a point to point connection consists of two partial connections you have to set the PtP connection properties for each partial connection Below you will find a description of how to open and set the parameters in the Properties PtP Connection dialog for the RK512 Opening the Dialog The Properties PtP Connection dialog appears automatically when you insert a new connection in the connection table You can also call this dialog for a connection at a later time 1 Select the connection from the connection table 2 Select the menu command Edit gt Properties PtP Connection Result The Properties PtP Connection dialog opens Settings You set the properties of a connection in the Properties PtP Connection dialog Table 5 4 Settings in the Properties PtP Connection dialog for RK512 Parameter Description Configured dynamic connection The check box is grayed and not selected The connection is set up automatically during startup and is sustained until shutdown Active connection setup The check box is grayed and selected The connection is always set up by the local station Send operating mode The check box is grayed and not selected Operating status messages cannot be sent messages Local ID Local ID hexadecimal which you have to specify as the parameter ID at the system function block in the user program of your CPU You can change the suggest
155. espectively The CP 441 modules are parameterized by the CPU at CPU start up The example can be executed with the minimum hardware equipment Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 217 Programming Example for System Function Blocks 9 1 General Information The program example The examples are on the CD which contains the CP 441 Configuration Package for Point to Point Communication parameter assignment interface They are in compiled form These programs are installed together with the parameter assignment interface Once installation has completed the examples are in the STEP 7 Examples catalog under CP 441 Note STEP 7 TIA Portal Select examples are available for download on the Customer Support pages as of STEP 7 V11 TIA Portal http support automation siemens com WW view de 59585200 http support automation siemens com WW view en 59585200 Point to point Link CP 441 Installation and Parameter Assignment 218 Manual 04 2012 A5E00405449 03 Programming Example for System Function Blocks 9 2 Device Contiguration 9 2 Device Configuration Application To try out the program example you could use the following devices e An S7 400 automation system mounting rack power supply CPU 414 or CPU 417 e ACP 441 e A programming device PG Data transmission is from interface 1 to interface 2 of the CP 441 If you use a CP 441 1 y
156. f the CP 441 8 5 Diagnostics via the diagnostic buffer of the CP 441 Diagnostic Buffer of the CP 441 The CP 441 as of 6ES7 441 xAA02 0AE0 x 1 2 has its own diagnostic buffer in which all diagnostic events of the CP 441 are entered in the order in which they occurred The following are displayed in the diagnostic buffer of the CP 441 e The operating status of the CP 441 e Hardware firmware errors on the CP 441 e Initialization and parameter errors e Errors during execution of a CPU request e Data transmission errors send and receive errors The diagnostic buffer allows the causes of errors in point to point link to be evaluated subsequently in order for example to determine the causes of a STOP of the CP 441 or to trace the occurrence of individual diagnostic events Note The diagnostic buffer is a ring buffer for a maximum of 64 diagnostic entries When the diagnostic buffer is full the oldest entry is deleted when a new entry is made in it The most recent entry always comes first When the POWER OF the CP 441 is switched off the contents of the diagnostic buffer are lost Reading the Diagnostic Buffer at the Programming Device The contents of the diagnostic buffer of the CP 441 can be read by means of the STEP 7 information functions Note Diagnostic events in the diagnostic buffer of the CP 441 can be read using STEP 7 as of version 4 0 All the user relevant information in the CP diagnostic buffe
157. f the data that can be transferred is limited to 450 bytes depending on the CPU of the communication partner Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 157 Communication via System Function Blocks 6 4 Using the system function blocks with the RK512 computer link Note also that the parameter limits of the RK512 protocol at the partner only allow you to access data blocks 1 through 255 and to specify a maximum of 255 as the offset Note If you send data to a CP 441 by means of an S5 CP or a third party device in this mode you must specify DB as the destination data block with the corresponding number and start address offset in the request block Interprocessor communication flags are not evaluated The connection via which the data is forwarded from the CP 441 to the S7 CPU is selected by means of the CPU number The length of the transferable data is 450 bytes At the CP 441 Communication Partner The CP 441 of the communication partner recognizes the type of data transmission you have selected using the data type DB in the RK512 frame header No programming is necessary in the S7 user program of the CPU Example Table 6 14 Example of calling SFB12 BSEND using RK512 STL L B 16 1 Data type DB T DB60 DBB820 L 0 Not relevant T DB60 DBB821 L 20 Starting at data word 20 offset T DB60 DBB822 L 71 DB No 71 T DB60 DBB823 CALL SFB 12 DB62
158. ff 1 2 Negative acknowledgment from partner SFB The function cannot be executed 1 3 R_ID is not known on the communication link identified by ID or receive block not yet called 4 Error in send area pointer SD_1 regarding data length or data type or the LEN parameter received the value 0 or error in receive area pointer RD_1 of SFB 13 BRCV The reset request has been completed The status of the partner SFB is DISABLED value of EN_R is 0 Status of partner SFB is not correct receive block not called since last data transfer a oaf oafo INIO Access to remote object in user memory denied Point to point Link CP 441 Installation and Parameter Assignment 190 Manual 04 2012 A5E00405449 03 Diagnostics Functions of the CP 441 8 2 Diagnostics Messages of the System Function Blocks ERROR STATUS Description decimal 1 10 Access to local user memory not possible for example access to deleted DB 1 12 The SFB call e specified an instance DB which does not belong to SFB 12 e specified a global DB instead of an instance DB e did not have an Instance DB programming device load a new instance DB 1 18 R_ID already exists in the link 1 20 Insufficient main memory Error Information for SFB 13 The table contains all the SFB 13 specific error information that can be output in the ERROR and STATUS parameters Table 8 3 Error
159. ffic during an initialization conflict If a device responds to the communication partner s send request code STX within the acknowledgment delay time by sending the code STX instead of the acknowledgment DLE or NAK an initialization conflict occurs Both devices want to execute a send request The device with the lower priority withdraws its send request and responds with the code DLE The device with the higher priority sends its data in the manner described above Once the connection has been released the lower priority device can execute its send request To be able to resolve initialization conflicts you must set different priorities for the communication partners Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission Procedure errors See also 2 4 Data Transmission with the 3964 R Procedure The procedure recognizes both errors which are caused by the communication partner and errors caused by faults on the line In both cases the procedure makes repeated attempts to send receive the data block correctly If this is not possible within the maximum number of transmission attempts set or if a new error status occurs the procedure aborts the send or receive process It reports the error number of the first recognized error and returns to idle mode The CP 441 reports the error in the SYSTAT error signaling area If the CP 441 frequently
160. for sending data with RK512 to the CP 441 communication partner using BSEND and BRCV Source To Destination Parameter Assignment in the Parameter Parameter Parameter BSEND S7 BSEND SFB Parameter SD_1 Assignment Assignment in Assignment in BRCV from S7 Communication Source in BSEND BSEND SFB Parameter RD_1 Partner BRCV SFB BRCV SFB Destination Parameter Parameter LEN Source R_ID S S DBNO S Length max No D D D TYP Offset byte 4096 byte TYP DBNO Offset E E byte Data block Data block DB 1 0 1 0 255 DB 1 0 Flag Data block MB Irrelevant 0 1 7 0 255 DB 1 0 Inputs Data block IB Irrelevant 0 1 0 255 DB 1 0 Outputs Data block QB Irrelevant 0 1 0 255 DB 1 0 Counter Data block Z Irrelevant 0 1 7 0 255 DB 1 7 0 Timers Data block T Irrelevant 0 1 0 255 DB 1 0 This value is dictated by the CPU that you use Abbreviations S TYPE source type S DBNO source data block number S Offset source start address D TYPE destination type length source length D DBNO destination data block number D Offset destination start address Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 155 Communication via System Function Blocks 6 4 Using the system function blocks with the RK512 computer link Specifications in the frame header of the RK512 protocol T
161. fore be sent from more than one source BSENDs but stored on one destination only per serial interface BRCV or receive mailbox Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 145 Communication via System Function Blocks 6 3 Using the System Function Blocks with the 3964 R Procedure 6 3 2 Data Transmission with 3964 R Using BSEND and BRCV What To Do This type of data transmission has the advantage that using the BRCV you can interpret the NDR parameter to establish when the complete data was received and the EN_R parameter to prevent unprocessed data from being overwritten at the receiver On Your Programmable Controller For each communication request you must program a BSEND SFB12 system function block in the S7 user program of the CPU The R_ID parameter takes any value When programming more than one BSEND you must use different R_IDs For the SD_1 parameter data type ANY specify which data source is to be passed on Example p DB10 DBX5 0 WORD 1 The length is not evaluated with data type ANY since the length of the data to be sent is defined in the LEN parameter Note that the length of the transmittable data is restricted to 4 KB At the CP 441 Communication Partner In the S7 user program of the CPU you must program the BRCV system function block SFB 13 Note So that no destination information can be transferred to the protocol by this mean
162. frame without error message Send response frame with error message All data transferred Partner request completed More sub blocks b d Start TRES T gt Tres or first command frame Wait for received continuation frame Cont response frame received Error abortion Response frame monitoring time dependent on transmission rate Tres 3 s 5 s 7 s 10 s AS automation system Figure 2 19 Flow chart for data transmission from partner requests with RK512 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 57 Basic Principles of Serial Data Transmission 2 6 Data Transmission with the ASCII Driver 2 6 Introduction 2 6 1 Sending data 58 Data Transmission with the ASCII Driver The ASCII driver controls data transmission via a point to point connection between the communication processor and a communication partner This driver contains the physical layer layer 1 The structure of the message frames is left open through the S7 user passing on the complete send message frame to the communication processor For the receive direction the end criterion of a message must be configured The structure of the send message frames may differ from that of the receive message frames The ASCII driver allows data of any structure all printable ASCII characters as well as all other characters from 00 thr
163. g 4 11 Variable SD_1 12345 DEC Error The selected width was too small for the variable value to be output The precision is not relevant to representation type I Example 3 96 10 3 Format string 7 2D Variable SD_1 D 1996 10 31 Error The format string is formally correct but the selected width was too small to print the date out fully Example 4 kkkkkkkkkk Format string 3A Variable SD_1 D 1996 10 31 Error The standard width of representation type A was selected but with invalid precision The possible values here are 2 and 4 Example 5 Format string 3 3 Variable SD_1 12345 HEX Error A representation type was not specified Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 8 Parameter Assignment Data of the Protocols Examples of Correct Conversion Statements Below are some examples of correct conversion statements Example 1 31 10 1996 Format string 15 4A Variable SD_1 D 1996 10 31 A width of 15 with a precision of 4 width of the year and right justified formatting were selected Example 2 12345 Format string 6l Variable SD_1 12345 DEC The selected width was one character greater than the variable value to be output left justified formatting Example 3 12d_Oh_0m_23s_348ms Format string T Variable SD_1 T 12D23S348MS The IEC time i
164. g up of the corresponding block Communication processor Communication processors are modules for point to point connections and bus connections Configuring Configuring refers to the configuration of separate modules of a programmable controller Connection configuration A connection configuration refers to the specification of a connection_ID in the system function block By means of the connection_ID the system function blocks can communicate between two communication terminals CP 441 programming interface Configuration Package for Point to Point Communication Using the CP 441 Configuration Package for Point to Point Communication assign parameters to the interface modules of the communication processor and configure the message texts for the printer output Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 259 Glossary CPU Central Processing Unit Central module of the S7 Programmable Controller with control and computing unit memory system program and interfaces to the I O modules Cycle time The cycle time is the time that the CPU requires to process the user program once Cyclic program processing In cyclic program processing the user program runs in program loop or cycle that is constantly repeated Data block DB Data blocks are blocks that contain data and parameters with which the user program works Unlike all other blocks they do not contain
165. ge text in order for example to display as computed values of the user program or dates and times SD_4 DONE VAR_OUTPUT BOOL Indicates at a rising edge the error free completion of the PRINT request ERROR VAR_OUTPUT BOOL Rising edge indicates error STATUS VAR_OUTPUT WORD Contains detailed error message or warning STATUS System Function Block SFB 22 Parameter Type Type Meaning REQ VAR_INPUT BOOL Activates a transfer at rising edge ID VAR_INPUT WORD Unique communication connection to a communication partner PHYS VAR_IN_OUT ANY Logical device status NDR VAR_OUTPUT BOOL Rising edge indicates that new receive data is available to the user program ERROR VAR_OUTPUT BOOL Rising edge indicates error STATUS VAR_OUTPUT WORD Contains detailed error message or warning Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 253 SFB Parameters Further Information For detailed information on system function blocks refer to the System Software for S7300 400 System and Standard Functions Reference Manual or directly to the STEP 7 TIA Portal Online Help Point to point Link CP 441 Installation and Parameter Assignment 254 Manual 04 2012 A5E00405449 03 Accessories and Order Numbers Order Numbers Table D 1 The following is an overview of the accessories for the CP 441 6ES7 441 xAA04 0AE0 Product Order Number CP 441 1 6ES7 441 1AA04 0AE0 CP 441 2 6ES7 441 2AA04 0AE0
166. haves identically in both cases Cold restart of the CPU When the CPU is restarted cold the SFB requests on the CPU are reset that is all current requests between the CPU and the CP are automatically aborted The requests on the CP are deleted Restart of the CPU 186 When the CPU is restarted the SFB requests continue to be processed Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Diagnostics Functions of the CP 441 8 Introduction The diagnostics functions of the CP 441 enable you to quickly localize any errors which occur The following diagnostics options are available e Diagnostics via the display elements of the CP 441 e Diagnostics via the STATUS output of the system function blocks e Diagnostics via the error signaling area SYSTAT e Diagnostics via the error numbers in the response frame e Diagnostics via the diagnostic buffer of the CP 441 e Diagnostics interrupt Display elements LEDs The display elements show the operating mode or possible error states of the CP 441 The display elements give you an initial overview of any internal or external errors as well as interface specific errors see section Diagnostics via the display elements of the CP 441 Page 189 STATUS output of the SFBs Every system function block has a STATUS output for error diagnostics Reading the STATUS output of the system function blocks gives you general information on error
167. he communication partner may have to be connected to open circuit potential Please note that you must only use shielded connector casings A large surface area of both sides of the cable shield must be in contact with the connector casing caution Never connect the cable shield with the GND as this could destroy the submodules GND must always be connected on both sides pin 5 otherwise the submodules could again be destroyed The following pages contain examples of cables for a point to point link between the CP 441 and S7 modules or SIMATIC S5 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 233 Cables B 1 RS232 interface module RS232 cables S7 CP 441 S7 CP 441 CP 340 The figure below illustrates the cable for a point to point link between a CP 441 anda CP 441 CP 340 You require the following female connectors for the cables e At CP 441 end 9 pin subminiature D female with screw interlock e At the communication partner 9 pin subminiature D female with screw interlock CP 441 Communication partner Le I N A c I i iN i l l LN E 1 It Receiver kai Sender i 24s 1 RxD TxD 1 13 i lt i bt it I I I l l I l l l Sender T Receiver I I I l l l 341 TxD RxDi 1 12 i Dam gt EA l l I l I l I l 7
168. he CP 441 Table A 2 Technical specifications interface module 6ES7 441 xAA04 0AE0 Technical RS232 20mA TTY X27 RS422 485 specifications 6ES7 963 1AA00 0AAO 6ES7 963 2AA00 0AA0 6ES7 963 3AA00 0AA0 Current consumption 0 1Aat5V 0 1Aat5V 0 25A at5V rated value 0 045 A at 24 V Power loss 0 5 W 1 5W 1 25 W Degree of protection IPOO IPOO IPOO Isolation No Yes Yes Dimensions Approx 95 x 70 x 20 mm Approx 95 x 70 x 20 mm Approx 95 x 70 x 20 mm DxHxW Weight 80 g 80g 80g Data transmission rate Max 115 2 kbps Max 19 2 kbps Max 115 2 kbps Min 300 bps Min 300 bps Min 300 bps Cable length Max 15 m Max 1000 m at 9600 bps Max 1200 m at 19200 bps Front connectors 9 pin sub d male with screw interlock 9 pin sub d female with screw interlock 15 pin sub d female with screw interlock Technical specifications interface module 6ES7 441 xAA05 OAE0 The following table contains the technical specifications of the plug in interface modules of the CP 441 Table A 3 Technical specifications interface module 6ES7 441 xAA05 OAEO Technical RS232 20mA TTY X27 RS422 485 specifications 6ES7 963 1AA10 0AA0 6ES7 963 2AA10 0AA0 6ES7 963 3AA10 0AA0 Current consumption 15 mA at 3 3 V 15 mA at 3 3 V 41 mA at 3 3 V rated value 23 mA at 24 V per current source Power loss 0 05 W 0 6 W 0 14 W Degree of protection IPOO IPOO IPOO Isolation No Yes Yes Dimensions Approx 87 x 67 x 19 mm Approx
169. he CP 441 proceed as follows 1 First unplug the power supply module or dismount the CP 441 from the rack 2 The installation of an interface module depends on the version of the CP 441 6ES7 441 xAA04 0AE0 Insert the interface module carefully into the module bay of the CP 441 and fasten the interface module with screws on the top and bottom with a torque of 0 8 to 1 1 Nm 6ES7 441 xAA05 OAEO Insert the interface module carefully into the module bay of the CP 441 until the locking mechanism latches into place Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 111 Mounting the CP 441 4 3 Installing and Removing the Interface Submodules of the CP 441 Removal sequence To remove an interface module from the CP 441 proceed as follows 1 First unplug the power supply module or dismount the CP 441 from the rack 2 The removal of an interface module depends on the version of the CP 441 6ES7 441 xAA04 0AE0 Loosen the screws on the top and bottom on the interface module and remove the interface module carefully from the module bay of the CP 441 6ES7 441 xAA05 0AE0 Loosen the locking mechanism by pressing it on the sides of the interface module and carefully pull the interface module from the module bay of the CP 441 Point to point Link CP 441 Installation and Parameter Assignment 112 Manual 04 2012 A5E00405449 03 Configuring and Assigning Parameters for the 5 CP 44
170. he following table shows the specifications in the RK512 frame header Table 6 13 Specifications in frame header of RK512 protocol Sending data with RK512 to CP 441 communication partner using BSEND and BRCV Source to the destination Frame header BSEND from S7 7 Communication Partner BRCV Bytes 3 4 Bytes 5 6 Bytes 7 8 Command D DXNO D Offset Number in mode Data block Data block OD DX DW Words Flag Data block OD DX DW Bytes Inputs Data block OD DX DW Bytes Outputs Data block OD DX DW Bytes Counter Data block OD DX DW Words Timers Data block OD DX DW Words The source information is not transferred to the CP so the CP always enters the ID for DB OD at this point Abbreviations S DXNO extended destination data block number D Offset destination start address DW Offset in words 156 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Communication via System Function Blocks 6 4 Using the system function blocks with the RK512 computer link 6 4 3 Sending data with RK512 to the communication partner CP 441 with static destination definition using BSEND What To Do This type of data transmission has the advantage that no programming is necessary in the user program of the communication partner Note that at the receiver you cannot tell when a transmission is taking place Therefore the receiving CP 441 cannot prev
171. he parameters below Note Please note the following e The message texts are stored in the CPU s load memory together with the parameter assignment data and loaded automatically onto the CP 441 during the loading operation You must therefore reserve the corresponding memory space up to 55 kByte per interface in the load memory of the CPU for every interface for which you have created message texts e Before you transfer the message texts to the CP 441 you must increase the value of the parameter for transferring parameters to modules for the relevant CPU You should plan in approximately 20 s per interface Data transmission rate character frame The table below contains descriptions of and specifies the value ranges of the relevant parameters Note Inreasing the max number of signal numbers from 1000 to 4000 As of CP 441 6ES7 441 XAA04 0AE0 or Parameter assignment interface CP 441 Configuration Package for Point to Point Communication V5 1 incl SP6 you can configure up to 4000 message text numbers 0 3999 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 87 Basic Principles of Serial Data Transmission 2 8 Parameter Assignment Data of the Protocols Table 2 12 Data transmission rate character frame printer driver Parameter Description Value range Default value Baud rate Data transmission rate in bps e 300 9600 Note e 600 A maximum of 19200 bps
172. ical specifications Scope of the manual The manual is relevant to the following CPs and interface modules Product Order number As of Release CP 441 1 6ES7 441 1AA04 0AE0O 01 6ES7 441 1AA05 0AE0 01 CP 441 2 6ES7 441 2AA04 0AE0O 01 6ES7 441 2AA05 0AE0 01 RS232 module 6ES7 963 1AA00 0AAO 01 6ES7 963 1AA10 0AAO 01 20 mA TTY module 6ES7 963 2AA00 0AAO 01 6ES7 963 2AA10 0OAAO 01 X27 RS422 485 module 6ES7 963 3AA00 0AA0 01 6ES7 963 3AA10 0AA0O 01 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Preface NOTICE For CP 441 up to order number 6ES7 441 xAA04 0AE0 IF 963 interface modules with order number 6ES7 963 xAA00 0AA0 are used For CP 441 as of order number 6ES7 441 xAA05 0AE0 the IF 963 interface modules with order number 6ES7 963 xAA10 O0AA0O must be used Note The descriptions of the CP 441 communication processor and the interface modules in this manual were correct at the time of publication We reserve the right to describe modifications to the functionality of the modules in a separate Product Information Changes compared to the previous version 04 2011 Approvals Compared to edition 04 2011 of this manual this edition describes the additional functions of the CP 441 as of order number 6ES7441 xAA05 AE0 x 1 2 This includes e Firmware update via HW Config e Identification data I amp M functions e
173. ified and Parameter assignment error on module parameter assignment and the SDB is identified As soon as the module test has been completed parameter assignment is performed by the CPU without errors SFB calls in the user program will result in an error as long as the CP 441 has not been parametered Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 185 Start up Characteristics and Operating Mode Transitions of the CP 441 7 2 Operating Mode Transitions of the CP 441 7 2 Introduction CPU STOP CPU RUN Operating Mode Transitions of the CP 441 Once the CP 441 has been started up all data is exchanged between the CPU and the CP 441 by means of the system function blocks The operating mode transition behavior of the CP 441 depends on the operating mode of the CPU Communication direction CPU gt CP Communication between the CPU and CP 441 still takes place even when the CPU is in STOP mode When the CPU is in STOP mode the initiated SFB requests e g BSEND on the CPU are fully executed and the data is transferred in its entirety to the CP 441 and forwarded to the communication partner Communication direction CP gt CPU The message frames are received in the CP 441 Any attempt to send the data on to the CPU is aborted with an error message The CP 441 does not recognize how the CPU switches to RUN mode cold restart or restart following CPU STOP The CP 441 be
174. ignals successful completion of BSEND request with rising edge ERROR VAR_OUTPUT BOOL Rising edge indicates error STATUS VAR_OUTPUT WORD Contains detailed error message or warning Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 251 SFB Parameters BRCV System Function Block SFB 13 Parameter Type Type Meaning EN_R VAR_INPUT BOOL Rising edge signals that remote communication partner is ready to receive ID VAR_INPUT WORD Unique communication connection to a communication partner R_ID VAR_INPUT DWORD Unique block relationship in a communication connection RD_1 VAR_IN_OUT ANY Data to be received LEN VAR_IN_OUT WORD Length of data block to be transmitted NDR VAR_OUTPUT BOOL Rising edge indicates that new receive data is available to the user program ERROR VAR_OUTPUT BOOL Rising edge indicates error STATUS VAR_OUTPUT WORD Contains detailed error message or warning GET System Function Block SFB 14 Parameter Type Type Meaning REQ VAR_INPUT BOOL Activates a transfer at rising edge ID VAR_INPUT WORD Unique communication connection to a communication partner ADDR_1 VAR_IN_OUT ANY Pointer to the data areas in the partner CPU to be fetched ADDR_4 RD_1 VAR_IN_OUT ANY Pointer to the data areas of the local CPU in which the fetched data is 7 placed RD_4 NDR VAR_OUTPUT BOOL Rising edge indicates that new receive da
175. igure below illustrates the cable for a point to point link between a CP 441 anda CP 544 CP 524 CPU 928B CPU 945 or CPU 948 You require the following male connectors for the cables e At CP 441 end 9 pin sub D male connector with screw locking e At the communication partner 25 pin subminiature D male with slide latch CP 441 Communication partner l 5 RxD TxD I IN Receiver i i i 8 I l c i 3 i 24V L l 9 l i 1 Ul ploy n Sender i Receiver WA 1 TxD RxD 13 Pal l l t l l i l l l I l l l l T Cable type fi o l Enclosure shield LIYCY 4 x 0 14 Enclosure shield Figure B 9 20mA TTY Connecting Cable CP 441 CP 544 CP 524 CPU 928B CPU 945 CPU 948 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 243 Cables B 2 20mA TTY interface submodule 20mA TTY connecting cable S7 CP 441 CP 523 244 The figure below illustrates the cable for a point to point link between a CP 441 anda CP 523 You require the following male connectors for the cables At CP 441 end 9 pin sub D male connector with screw locking At the communication partner 25 pin sub D male with screw fixing CP 441 Communication partner fe E gt g R x I eee a B 3 1 1 20mA TxD 10 l l l l 24V l aM T Zz l l l Sender l 5 1 RED TxD 12 a i l l N Receiver
176. imal DB 1 hexadecimal IPC flag bits 0 7 hexadecimal if you are not using an IPC flag the protocol enters FH in the frame header Byte 1 bit 4 5 6 7 Byte 2 Byte for IPC flag 1 233 decimal or if you are not using an IPC flag 255 decimal Byte 3 Offset 0 255 decimal in words Byte 4 DB No 3 255 decimal The parameters of the destination data area are transmitted to the communication partner in the RK512 frame header Note that the length of the transmittable data is restricted to 4 KB At the S5 Communication Partner or Third party Device For the relevant information you should read the notes in the appropriate S5 manual or in the relevant literature if you are using a third party device Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 161 Communication via System Function Blocks 6 4 Using the system function blocks with the RK512 computer link Example Table 6 17 Example of calling SFB12 BSEND using RK512 STL L 50 Length 50 bytes T DB60 DBW806 L BHI6 31 IPC flag bit 3 data type DB T DB60 DBB820 L 30 Interprocessor communication flag T DB60 DBB821 byte 30 L 20 Starting at data word 20 offset T DB60 DBB822 L 71 DB No 71 T DB60 DBB823 CALL SFB 12 DB62 REQ DB60 DBX812 0 Following a rising edge at the REQ R DB60 DBX812 1 parameter the data for a length of 50 bytes starting at data byte 5 in ID W
177. in partner programmable Set the partner programmable controller to RUN controller or e Error notifying CP CPU at the partner or e Partner programmable controller is in STOP state 09 08H RK512 only Partner detecting synchronization This error occurs at restart of your own error programmable controller or of the partner This Message frame sequence error represents normal system start up behavior You do not need to correct anything The error is also conceivable during operation as a consequence of previous errors Otherwise you can assume an error on the part of the partner device 09 09H RK512 only DB DX disabled at partner by In partner program After processing of the last coordination flag transmission data reset the coordination flag In own program Repeat the request 09 0AH RK512 only Error detected by partner in frame Check if the error is the result of disturbances or of header 3rd command byte in header is incorrect a malfunction at the partner Use an interface test device switched into the transmission line to check 09 0BH RK512 only Error in frame header 1 1st or 4th Check if the error is the result of disturbances or of command byte in header is incorrect a malfunction at the partner Use an interface test device switched into the transmission line to check 09 0CH RK512 only Partner detects incorrect frame length Check if the error is the result of disturbances or of total length a malfunction at the p
178. in the form descriptions of the transmission protocols W 16 wxyz Status Parameters The status parameters allow you to monitor whether the block has completed its task successfully or is still doing it They also display errors that occur Note The status parameters are only valid for a single cycle from the first command following the SFB call to the next SFB call Consequently you have to evaluate these parameters after every block cycle Point to point Link CP 441 Installation and Parameter Assignment 140 Manual 04 2012 A5E00405449 03 Communication via System Function Blocks 6 2 Using the System Function Blocks Table 6 4 SFB Status Parameters Parameter Datatype Sender Recipient Description DONE BOOL Sender 0 The request has not yet been started or is still being executed 1 The request has been completed without error In other words e With ASCII driver Request was sent to the communication partner This does not necessarily mean that the data was received by the communication partner e With 3964 R procedure Request was sent to the communication partner and positive acknowledgement was returned This does not necessarily mean that the data was forwarded to the partner CPU e With RK512 computer link Request was sent to the communication partner which forwarded it without error to the partner CPU NDR BOOL Receiver 0
179. information is not transferred to the CP so the CP always enters the ID for DB AD at this point Offset in words Abbreviations used in the table D DBNO destination data block number D Offset destination start address DW 164 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Communication via System Function Blocks 6 4 Using the system function blocks with the RK512 computer link Request Table The following table lists the data types which can be transmitted Data destination DX Table 6 20 Request table for Sending data to an S5 communication partner or third party device with RK512 data destination DB Source To Destination S5 Parameter assignment at Parameter Parameter Assignment BSEND from 7 Communication Partner or SFB BSEND Assignment in at BSEND SFB Third party Device Parameter SD_1 source BSEND SFB Parameter R_ID Parameter LEN Destination Source S S DBNO S Offset Length max 4096 D D D Offset TYP byte byte TYP DBNO words E E Data block Extended data block DB 1 0 1 DX 3 255 0 255 Flag Extended data block MB Irrelevant 0 1 DX 3 255 0 255 Inputs Extended data block IB Irrelevant 0 1 7 DX 3 255 0 255 Outputs Extended data block QB Irrelevant 0 1 DX 3 255 0 255 Counter Extended data block Z Irrelevant 0 1 DX 3 255 0
180. ing is defined by means of a format string In the format string you can also define statements to execute other useful functions for printer output e g to set a page number or begin a new page All the permissible characters and representation modes for the format string are described below You can also configure all the control statements for variables except for F begin new page and x printing without a line break and the conversion statements for variables except for P set page number and in the message texts using the parameter assignment interface for the CP 441 Configuration Package for Point to Point Communication parameter assignment interface Format string The figure illustrates the structure of the format string schematically A format string can contain normal text and or conversion statements for variables and or control statements Normal text conversion statements and control statements can occur in any sequence in the format string There must be a conversion statement and only one for each variable in the format string or message text The conversion statements are applied to the variables in the sequence in which they occur hm Normal text all printable characters gt Conversion statement Control statement Figure 2 29 Schematic Structure of the Format String Permissible Characters for Text The following can be specified as normal text e All printable characters e All characters pre
181. ing DLE ETX BCC is received the CP 441 compares the BCC of the communication partner with its own internally calculated value If the BCC is correct and no other receive errors occur the CP 441 responds with DLE Otherwise the CP 441 responds with an NAK and waits the block wait time T of 4 seconds for a new attempt If after the defined number of transmission attempts the block cannot be received or if no further attempt is made within the block wait time the CP 441 aborts the receive operation Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 43 Basic Principles of Serial Data Transmission 2 4 Data Transmission with the 3964 R Procedure initialization conflict 44 The figure below illustrates the transmission sequence during an initialization conflict CP 441 Communication partner low priority higher priority Start code 02H SIX gt COnN Start code 02H lt STIX setup Pos acknowledgment 10H DLE gt 1st data byte st byte 2nd data byte _ 2nd byte User data e E nth data byte ______ nth byte End code 10H i DLE End code 03H ETX o Connection 3964R only a BC release Pos acknowledgment 10H DLE gt 2nd setup attempt Start code 02H STX gt Connection Pos acknowledgment 10H DLE setup Figure 2 12 Data tra
182. ing and programming the S7 400 e Technical overviews which provide you with an overview of the SIMATIC S7 or STEP 7 and e Technical overviews with which you can find out about the S7 400 Manuals for Configuring and Commissioning An extensive user documentation is available to assist you in configuring and programming the S7 400 You can select and use this documentation as required The table also provides you with an overview of the documentation to STEP 7 Table E 1 Manuals for Configuring and Programming the S7 400 Title Contents Manual The programming manual offers basic information on the design of the Programming with STEP 7 http support automation siemens com view en 18652056 operating system and a user program of an S7 CPU For novice users of an 7 300 400 it provides an overview of the programming principles on which the design of user programs is based Manual Configuring Hardware and Communication Connections with STEP 7 http support automation siemens com view en 18652631 The STEP 7 user manual explains the principles for using the STEP 7 automation software and its functions Novice users of STEP 7 as well as experienced users of STEP 5 are provided with an overview of the configuring programming and start up procedures for an S7 300 400 When working with the software an on line help assists you if you require detailed information on the software Reference Manual Syst
183. ing data for example due to an interrupted data link or because fatal errors are pending or the behavior of the partner device is faulty If necessary use an interface test device switched into the transmission line to check 07 05H Negative acknowledgment during sending Check whether the partner also indicates an error possibly it has not received all of the transmitted data for example due to an interrupted data link or because fatal errors are pending or the behavior of the partner device is faulty If necessary use an interface test device switched into the transmission line to check 07 06H Error at end of connection Check whether the partner also indicates an error e Partner rejected frame at end of connection with possibly it has not received al Obie transmitted data for example due to an interrupted data link NAK or a random string except for DLE or d f or because fatal errors are pending or the behavior e Acknowledgment code DLE received too early of the partner device is faulty If necessary use an interface test device switched into the transmission line to check 07 07H Acknowledgment delay time exceeded at end of Partner device too slow or faulty If necessary use connection or response monitoring time exceeded an interface test device switched into the after send frame transmission line to check After connection release with DLE ETX no response received from partner within acknowledgment dela
184. ingle NAK to the communication partner to set the latter to idle Establishing a Receive Connection In idle mode when there is no send request to be processed the procedure waits for the communication partner to establish the connection If no empty receive buffer is available during a connection setup with STX a wait time of 400 ms is started If there is still no empty receive buffer after this time has expired the system program reports the error error number in SYSTAT and the procedure sends a NAK and returns to idle mode Otherwise the procedure sends a DLE and receives the data as described above If the idle procedure receives any control code except for STX or NAK it waits for the character delay time to expire then sends the code NAK The CP 441 reports the error in the SYSTAT error signaling area Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 39 Basic Principles of Serial Data Transmission 2 4 Data Transmission with the 3964 R Procedure Receiving data After a successful connection setup the receive characters that are arrive are stored in the receive buffer If two consecutive DLE codes are received only one of these is stored in the receive buffer After each receive character the procedure waits out the character delay time for the next character If this period expires before another character is received an NAK is sent to the communication partner
185. ink CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 263 Glossary System functions SFCs TIA Portal Tool User program Variable Working memory 264 System functions are blocks without memory that are already integrated into the operating system of the CPU and can be called up by the user whenever necessary STEP 7 TIA Portal is the new engineering software for programming S7 controllers STEP 7 TIA Portal is based on the new central Totally Integrated Automation Portal TIA Portal engineering framework which offers users a consistent efficient and intuitive solution for all automation tasks A tool is a software utility that can acces the functions of the operating system in the programming device or PC The user program contains all instructions and declarations for processing the signals used for controlling a system or a process In SIMATIC S7 the user program is structured and divided into small units the blocks A variable is an operand e g 1 0 which can have a symbolic name and therefore also be addressed symbolically The working memory is a RAM storage unit in the CPU which the processor draws on when running the user program Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Index 3 3964 R procedure Block check character Control characters handling erroneous data initialization conflict 44 Priority 33
186. inter OUtDUt c cccceceeeeeeeeeeeeeceeeteeeeeeenaeeeeeeeeteees Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 7 Table of contents Commissioning th CP 44 Tencens r E lecedesieanenacnends Mounting the CPM I anonanse N r aN 4 1 PAA SOUS ie a aE E a a ea EAE Aa uae a A a aa teen 4 2 Mounting and Dismounting the CP 441 4 2 1 instalation StEp Senini a a aa a a a a 4 2 2 Removal Steps soos cxaseciaccutezeneddccchdacasceud nse tact a a aaa a ia aaa 4 3 Installing and Removing the Interface Submodules of the CP 441 sseceseeeisseersseerssren 111 Configuring and Assigning Parameters for the CP 441 o cccccccccccceessssseseseeeeesessssseeesseeeeeessssssseseeess 5 1 Parameters for the communications PrOtOCOIS ccesesesessssesesesesessseseseesseseseseseseseeeesesesesens 5 2 Managing the Parameter Data ii ccccci scccedcesecagecasncees setecaeeseaseds evaaneees sete caeegehssedd extn sedensaneeeestees 117 5 3 Multiprocessor COMMUNICATION cccseseseesseeeseecstececccseeeeeessseeeeeseeseeeessssseesseseeeesseeseeeeeeeaes 118 5 4 Identification data sisieivvsctsdecevesdcevs secdieks Voehadds iaa seadadaes vabderes a daau a 119 5 5 Subsequent Loading of Drivers Transmission Protocols cccccseeseceeceeeeeeeeeeseceeeeeeeees 120 5 6 Connection Configurathon ccc cszcetadesecescsidecesansecarsanedecendghietes A 5 6 1 Simplified Co
187. interconnection partner with error or error frame Event no Event Text To correct or avoid errors only Memory access error at partner no eck that the partner has the desired data area 09 02H RK512 only M ry t part Check that the partner has the desired dat memory and that it is big enough or check the parameters of With SIMATIC S5 as partner the called system function block bc Incorrectareaiatstat s word or Check the specified length at the system function i block e Data area does not exist except DB DX or e Data area too short except DB DX only access error at the partner eck that the partner has the desired data area 09 03H RK512 only DB DX t the part Check that the partner has the desired dat DB DX does not exist or is too short and that it is big enough or check the parameters of With SIMATIC 5 as partner the called system function block e DB DX does not exist or Check the specified length at the system function block e DB DX too short or e DB DX number impermissible Permissible source area for GET request exceeded 09 04H RK512 only Partner returns Request type not Partner malfunction because a system command is permitted never issued from the CP 441 09 05H RK512 only Error at partner or at SIMATIC S5 as Check if the partner can transmit the desired data partner type e Source destination type not permissible or Check the structure of the hardware at the partner e Memory error
188. interface signals in the plug connection accordingly When RTS CTS data flow control is configured RTS control by means of the V24_SET FB is not possible Tasks of the V24_STAT SET FB The V24_STAT FB function allows the status of each RS232 accompanying signal to be determined The V24 SET FB allows the DTR and RTS output signals to be controlled see section Using the System Function Blocks with the ASCII Driver Page 175 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 71 Basic Principles of Serial Data Transmission 2 7 Data Transmission with the Printer Driver 2 7 Introduction Data Transmission with the Printer Driver The printer driver allows you to output message texts with the date and time to a printer This enables you to monitor simple processes print error or fault messages or issue instructions to the operating personnel for example The printer driver contains the physical layer layer 1 Message Texts and Parameters for Printer Output Printer Output 72 With the CP 441 Configuration Package for Point to Point Communication parameter assignment interface you can configure the message texts and set the parameters page layout character set control characters for printer output Message texts and printer output parameters are transmitted to the CP 441 together with the module parameters when it starts up e Message texts You can configure me
189. ion and Parameter Assignment Manual 04 2012 A5E00405449 03 159 Communication via System Function Blocks 6 4 Using the system function blocks with the RK512 computer link Further Information You can find more information on data consistency in the reference manual on system functions and standard functions System Software for S7 300 400 System and Standard Functions Point to point Link CP 441 Installation and Parameter Assignment 160 Manual 04 2012 A5E00405449 03 Communication via System Function Blocks 6 4 Using the system function blocks with the RK512 computer link 6 4 4 Sending data with RK512 to the S5 communication partner or third party device with static destination definition What To Do If your partner in the link is an S5 CP or a third party device proceed as follows On Your Programmable Controller In the S7 user program of the CPU you must program the BSEND system function block SFB 12 For the SD_1 parameter data type ANY specify which data source is to be passed on Example p DB10 DBX5 0 WORD 1 The length is not evaluated with data type ANY since the length of the data to be sent is defined in the LEN parameter Specify the destination data area of the communication partner in the R_ID parameter The value is accepted once during CPU startup and cannot subsequently be changed The R_ID parameter DWORD is structured as follows Byte 1 bit 0 1 2 3 ID for data type DX 0 hexadec
190. k with the CP 441 Components Function Diagram STEP 7 software package configures assigns parameters programs and tests the S7 400 en Licence J Parameter assignment interface assigns parameters for the interfaces Configuration Package for Point to Point of the CP 441 Communication N Function blocks for reading and controlling the RS232 Ce accompanying signals Programming example with user programs for printer output and data transfer by means of the ASCII driver RK512 computer link and the 3964 R procedure Loadable drivers with transmission protocols that can be loaded on the CP 441 2 in addition to the standard protocols in the module firmware en Dongle J Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 15 Product Description 7 3 Structure of the CP 441 1 3 Structure of the CP 441 Setup The CP 441 1 communication processor has one slot and the CP 441 2 has two slots for plug in interface modules The operator control and display elements are in the same position on both the CP 441 1 and the CP 441 2 Identical elements have the same functions on both models Position of Operator Control and Display Elements The figure shows the positions of the operator control and display elements on the front panel of the CP 441 1 and the CP 441 2 communication processors o O CP 441 1 CP 441
191. keg e g RTS CTS Data flow control is implemented as follows on the CP 441 e As soon as the CP 441 is switched by the parameter configuration to an operating mode with data flow control it sends the XON character or sets the RTS line to ON e When the configured number of frames is reached or alternatively 50 characters before the receive buffer overflows size of the receive buffer 4096 bytes the CP 441 sends the XOFF character or sets the RTS line to OFF If the communication partner continues to send data regardless of this the receive buffer overflows and an error message is generated The data received in the last frame is discarded e As soon as a frame is fetched by the S7 CPU and the receive buffer is ready to receive the CP 441 sends the XON character or sets the RTS line to ON e Ifthe CP 441 receives the XOFF character or the CTS control signal is set to OFF the CP 441 interrupts the transmission If neither an XON character is received nor CTS is set to ON before a configured time has elapsed the transmission is aborted and an appropriate error message 0708H is entered in the SYSTAT error signaling area of the CP 441 Note You can configure the characters for XON and XOFF any ASCII character During parameter assignment of the XON XOFF software data flow control user data may not contain any of the configured XON or XOFF characters Note When RTS CTS data flow control is configured you must wire the
192. l is entered for the BRCV and the associated STATUS If you are using a CP 441 1 you must enter connection ID 1000 hexadecimal for the BRCV and the associated STATUS You can then receive data from your communication partner via interface 1 For the data transmission the block pair BSEND and BRCV are used The same R_ID is used for both blocks The values for R_ID are accepted once during startup and cannot subsequently be changed This ensures that the SFBs BSEND and STATUS are run through once at the beginning with REQ 0 so the edge rises from 0 to 1 at the REQ input the REQ parameter in OB 100 is set to 0 once after a complete restart see Chapter Diagnostics via the error signaling area SYSTAT Page 195 Description of FC 21 SEND 224 The Generate edge P_SEND_REQ program section BSEND is run through once at the start with BSEND_REQ 0 BSEND_REQ is then set to 1 The BSEND request is started when a signal state change from 0 to 1 is detected at the BSEND_REQ control parameter When BSEND_DONE 1 or BSEND_ERROR 1 BSEND_REQ is reset to 0 The BSEND_DONE 1 program section If the transfer is successful BSEND_DONE at the parameter output of the BSEND is set to mae To distinguish between consecutive transfers BSEND_COUNTER_OK send counter is included in data word 0 of the source block DB 42 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Progra
193. l state change from 0 to 1 the REQ input of the STATUS SFB is activated The 16 bytes addressed at the LOCAL parameter receive the current error status of the connection until the next STATUS SFB call The status of the memory words or data words is monitored in the variable table Other test options are available to you if you insert load commands in the program of any variables and then monitor them by means of the Block Status function in online operation You can select other options with the variable table by means of CONTROL VARIABLES The ENABLE_JOB_1 ENABLE_JOB_2 and ENABLE_JOB_3 variables offer you a choice of three different jobs The first job returns a printout of a message text The second and third jobs return a simple printout of a single variable or more than one variable respectively Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Programming Example for System Function Blocks 9 8 2 Blocks Used 9 8 Programming a Printer User Program Blocks Used in the Sample Program The table below shows the blocks used for the sample program Prerequisite All symbolic designations have already been declared in the symbol table Table 9 2 Blocks Used in the Sample Program for Printers Block Symbol Description OB 1 CYCLE Cyclic program processing OB 100 RESTART Start up OB for restart FB 50 PRINT A PRINT A FB 51 PRINT B P
194. l technical specifications of the SIMATIC S7 400 in the S7 400 Automation System Module Specitications reference manual and the S7 400 Automation System Installation installation manual Table A 1 Technical specifications of the CP 441 Technical specifications 6ES7 441 xAA04 0AE0 6ES7 441 xAA05 0AE0 Current consumption rated value 0 6A 5V 0 3A 5V Power loss 3 5 W 1 5 W Degree of protection IP20 Dimensions W x H x D 25 x 290 x 210 mm Weight Approx 0 8 kg Approx 0 58 kg Display elements LEDs for transmitting TXD receiving RXD and interface fault FAULT Group alarm LEDs for internal fault INTF and external fault EXTF Supplied protocol drivers e ASCII driver CP 441 1 e 3964 R procedure e Printer Supplied protocol drivers e ASCII driver CP 441 2 e 3964 R procedure e RK512 computer link e Printer e Modbus RTU master e Modbus RTU slave Interrupts e Diagnostic Interrupt Configurable Diagnostics e Indicators for internal and Yes 2 red LEDs external faults Diagnostic information dump Yes Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 231 Technical Specitications A 1 Technical data of the CP 441 and the interface modules Technical specifications interface module 6ES7 441 xAA04 0AE0 The following table contains the technical specifications of the plug in interface modules of t
195. lag is too high permitted 06 0AH Error in 10th command byte CPU number not Header layout error at partner permitted 06 0BH SEND frame was longer shorter than expected Correction required at the partner more less data received than announced in frame header 06 0CH GET command frame received with user data Correction required at the partner 06 ODH The CP received a frame during an invalid operating mode e Receive connection between CPU and CP not set up or not yet correctly set up e CP startup is not fully completed e Parameters for the interface are currently being assigned e Check whether the addressed connection has been assigned the correct parameters e This error message can occur only during CP startup Repeat the request e This is a temporary error Repeat the request 202 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Diagnostics Functions of the CP 441 8 3 Diagnostics via the error signaling area SYSTAT Event Class 6 06H Error processing a partner request only with RK512 Event no Event Text To correct or avoid errors 06 O0EH Synchronous fault of partner This error may be reported after your own e New continuation command frame received programming device is restarted in the case of long frames or when the partner is restarted These before response frame sent f cases represent normal system start u
196. le appears on the right 2 Double click this icon The Configuring Connections dialog appears Choose Insert gt Connection to insert your connection in the connection table 3 In the New Connection dialog select Unspecified as the communication partner and enter S7 PtP Connection as the connection type Then click OK to exit the dialog 4 In the Object Properties dialog set the specific properties of the connection In the Object Properties dialog change the name of the communication partner from Unspecified to an appropriate name the name is entered automatically in the connection table and make selections in the Via PtP CP and Interface list boxes No other settings are usually necessary Read the following sections if you want to define more than one connection per interface e g for multicomputing Chapter Properties PtP Connection dialog procedures for the ASCII driver printer driver and SAR procedure a ey or 5 Click OK to return to the Configuring Connections dialog Result The Configuring Connections dialog displays the connection that you have added and the Local ID Hexadecimal You have to specify this ID as the parameter ID at the system function block in the user program of your CPU Note If your communication partner is a CP 441 please note the following Whereas a homogeneous S7 connection ends directly at the two end points CPUs of the connection a point to point con
197. le p DB10 DBX6 0 WORD 10 For the ADDR parameter ANY data type you specify where the data is to be stored on your partner destination The length specified must agree with the value specified for the SD parameter The parameter limits of the RK512 protocol mean that only data blocks 1 to 255 of the partner can be reached For the transfer of timers and counters the CHAR data type must be specified for the data block in which the timers or numbers are stored Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 167 Communication via System Function Blocks 6 4 Using the system function blocks with the RK512 computer link Example p DB10 DBX6 0 CHAR 2 Note that at the receiver you cannot tell when a transmission is taking place Therefore the receiving CP 441 cannot prevent unprocessed data from being overwritten at the receiver Using the Response to a CPU Stop parameter indicate whether data should continue to be transmitted when the S7 CPU is also in STOP mode The parameter is only available for the CP 441 2 as of 6ES7 441 2AA04 0AE0 Interprocessor communication flags are not supported when linking with S5 CPs The sending and receiving CPU determines data consistency CPU 412 413 16 bytes CPU 414 417 32 bytes The weaker partner in terms of consistency determines the resulting consistency length for data transfer Note If you send data to a CP 441 by means of an S5 CP or
198. le controller At the start of the cyclic program the signal states of the input modules are transmitted to the process image of the inputs At the end of the cyclic program the process image of the outputs is transmitted as signal state to the output modules Programmable controller Protocol Rack Software START UP STEP 7 System blocks A programmable controller is a stored program control consisting of at least one CPU various input and output modules and operating and monitoring devices All communication partners involved in data transmission must follow fixed rules for handling and implementing the data traffic Such rules are called protocols The rack is the module rail containing the slots for the modules Software refers to the entirety of all programs that are used on a computing system The operating system and user programs belong to this The START UP operating mode forms the transition from STOP mode to RUN mode STEP 7 is the programming software of SIMATIC S7 System blocks are different from other block in that they are already integrated into the S7 400 system and are available for already defined system functions There are system data blocks system functions and system function blocks System function blocks SFBs System functions blocks are blocks without memory that are already integrated into the operating system of the CPU and can be called up by the user whenever necessary Point to point L
199. le for the PRINT SFB send variables SD_1 to SD_4 The variable thus points to the memory cell in which the desired message text number is entered Please note that the message text number must be specified in the WORD data format The flag width and precision do not affect the printer output in the case of the N representation type The message text configured beforehand with the CP 441 Configuration Package for Point to Point Communication parameter assignment interface is always output completely Example The pressure in the chamber is falling Format string N S Variable SD_1 Reference to memory cell containing 17 Text no 17 The pressure in the chamber Variable SD_2 Reference to string string variable is falling The reference to the string is a symbolic address that specifies where the string is stored DB Note Within a message text all conversion statements except for N and all control statements except for F and x are allowed An explicite width setting of N limits the printed length of the referenced message text to the width indicated Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 8 Parameter Assignment Data of the Protocols Setting the Page Number P You use the P representation type to change the page number in the printout The CP 441 always begins a printout a
200. lock has been called or has been blocked 04 0BH Error during data transmission between CPU and CP because e no connection has been configured e no receipt possible via configured connection e Configure the connection in NetPro e Enter in NetPro under Object Properties Connection as communication direction 2 Partner gt local or 3 Local partner Event Class 5 05H Error while processing CPU request Event no Event Text To correct or avoid errors 05 01H Current request aborted as a result of CP restart No remedy is possible at POWER ON When changing the parameters of the CP in the programming device before writing an interface you should ensure there are no more requests running from the CPU 05 02H Request not permitted in this operating mode of CP Set the parameters for the device interface e g device interface parameters are not set 05 03H Wrong time incorrect format Check the time parameters 05 05H Only for printer drivers Use the parameter assignment software to System data block with message texts not available Configure the message text and then carry out a on the CP restart 05 06H Only for printer drivers Use the parameter assignment software to Message text not available configure the message texts and then carry out a restart Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 0
201. ment Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 2 1 Serial transmission of a character Introduction The system provides various networking options for the exchange of data between two or more communication partners The simplest form of data interchange is via a point to point link between two communication partners Point to point link In point to point link the communication processor forms the interface between a programmable controller and a communication partner In PtP link with communication processor data are transferred via serial interface Serial Transmission In serial transmission the individual bits of each byte of information are transmitted one after the other in a fixed order Unidirectional Bidirectional Data Traffic The CP 441 itself handles data transmission with communication partners via its serial interface The CP 441 is equipped with three different drivers for this purpose e Unidirectional data traffic Printer Driver e Bidirectional data traffic ASCII driver 3964 R procedure RK512 computer link The CP 441 handles data transmission via the serial interface in accordance with the interface type and the selected driver Unidirectional Data Traffic Printer Output In the case of printer output printer driver n bytes of user data are output to a printer No characters are received The only exception to this are data flow control character
202. mentation for the individual SIMATIC products and systems at http www siemens de simatic doku http www siemens com simatic doku The online catalog and the online ordering system are available at http www siemens de automation mall http www siemens com automation mall This manual uses the generic term CP 441 This information in the manual apples to the CP 441 1 and CP 441 2 communication processors unless otherwise specified We offer a range of courses to help get you started with the S7 automation system Please contact your local training center or the central training center in Nuremberg D 90327 Germany Internet http Awww siemens com sitrain http www siemens com sitrain Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 5 Preface Technical support You can reach the technical support for all A amp D products e Use the Web form for the support request http www siemens com automation support request http www siemens com automation support request Additional information about Siemens Technical Support is available on the Internet at http www siemens de automation service amp support http www siemens com automation service amp support Service amp Support on the Internet In addition to our documentation we offer a comprehensive knowledge base online on the Internet http www siemens de automation service amp support http
203. ments are not executed This is printed out as e g representation type missing 2 2 The rest of the conversion statement e g everything after the character identified as incorrect is output This allows the exact cause of the error to be determined If this is not possible you can use the CP 441 STATUS system function block to find out the cause of the error see Chapter Communication via System Function Blocks Page 137 Conversion statements without associated variables send variables SD_1 to SD_4 for the PRINT SFB are ignored Variables for which there is no conversion statement are not output Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 101 Basic Principles of Serial Data Transmission 2 8 Parameter Assignment Data of the Protocols e Conversion statements that are not supported in a header or footer are not executed Instead they are forwarded to the printer transparently e You have to use control statements to specify formatting line feed tabs etc ina message text or in the printer output of a long conversion statement Examples of faulty conversion statements 102 Here are several examples of incorrect conversion statements Example 1 2R Format string 303 2R Variable SD_1 1 2345E6 Error Invalid width in the R representation type The maximum permitted value for all representation types is 255 Example 2 Format strin
204. mming Example for System Function Blocks 9 7 Programming an RK512 user program The BSEND_ERROR 1 program section If BSEND runs through with BSEND_ERROR 1 the BSEND_COUNTER_ERR error counter in data word 2 increments The BSEND_STATUS is copied because it will be overwritten with 0 in the next run and could not subsequently be read In addition in the event of an error the STATUS system function block is activated so that detailed fault messages LOCAL parameter can be read Description of FC 23 RECEIVE The Enable Receive Data program section For data to be received the receive enable control parameter BRCV_EN_R for the BRCV block must have the signal 1 The BRCV_NDR 1 program section When BRCV_NDR is set new data has been received and the BRCV_COUNTER_OK receive counter increments The BRCV_ERROR 1 program section If the startup is unsuccessful i e if the ERROR bit is set at the parameter output of BRCV the BRCV_COUNTER_ERR error counter increments The BSEND_STATUS is copied because it will be overwritten with O in the next run and could not subsequently be read In addition in the event of an error the STATUS system function block is activated so that detailed fault messages LOCAL parameter can be read see Chapter Diagnostics via the error signaling area SYSTAT Page 195 All relevant values can be observed for test purposes in the variable table Special Features of the CP 441 1 If
205. munication Partner 172 At the communication partner no programming is necessary in the S7 user program of the CPU Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Communication via System Function Blocks Example Request Table Table 6 26 Request table Fetching data with RK512 from a communication partner 6 4 Using the system function blocks with the RK512 computer link Table 6 25 Example of Calling SFB14 GET STL CALL SFB 14 DB14 REQ DB10 DBX10 0 ID WH16 1000 NDR DB10 DBX10 2 ERROR DB10 DBX10 3 STATUS DB10 DBW20 ADDR_1 P DB10 DBX 6 0 WORD 10 ADDR_2 ADDR_3 ADDR_4 RD 1 P DB100 DBX 0 0 WORD 10 RD 2 RD 3 RD 4 When this SFB is called at a positive edge at bit DBX10 0 data is fetched from the communication partner The data source is specified at ADDR_1 DB 10 starting at byte 6 This data is placed in DB 100 at byte 0 length must be specified If 10 words starting The same data several data areas are fetched at the same time additional ADDR_i and RD_i pairs can be assigned parameters The following table lists the data types which can be transmitted Source Fetch To Destination Parameter Assignment in the GET Parameter Assignment in the GET SFB GET from Your S7 PLC SFB Parameter ADDR Source Parameter RD Destination Communication Partner S TYPE S DBNO S Offset Length D
206. n receive buffer Enter error in SYSTAT error signaling area Figure 2 21 Sequence of receive operation with Expiration of Character Delay Time end criterion Point to point Link CP 441 Installation and Parameter Assignment 62 Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 6 Data Transmission with the ASCII Driver End criterion delimiter When data is received the end of the frame is recognized when the configured delimiter s arrive The received data including the delimiter s is accepted from the CPU If the character delay time expires while the frame is being received the receive operation is terminated An error message is issued and the frame fragment is discarded If you are working with delimiters transmission is not code transparent and you must make sure that the end code s are not in the user data of the user Note the following when the last character in the received frame is not the delimiter e End delimiter elsewhere in the frame All characters including the delimiter are entered in the receive DB The characters following the delimiter is discarded if the character delay time CDT expires at the end of the frame is merged with the next frame if a new frame is received before the character delay time expires e End delimiter not included in frame The frame is discarded if the character delay time CDT expires at the end of the frame
207. n the connection table 2 Set the object properties of the connection Complete Connection Configuration You configure a point to point connection between your CP 441 and the communication partner using STEP 7 The connection is configured in five steps 1 Insert a PtP subnet 2 Attach the CP 441 to the subnet 3 Select or insert the connection partner and attach the partner to the subnet 4 Enter a connection in the connection table 5 Set the object properties of the connection There are differences depending on whether the connection partner is a CP 441 ora CP 340 an S5 CP a printer or a third party station or device and on the protocol used for the connection Further Information 122 You will find general information on how to configure connections with STEP 7 in the STEP 7 manual Configuring Hardware and Communication Connections STEP 7 V5 3 In addition STEP 7 s online help system will provide you with assistance in configuring a connection Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Configuring and Assigning Parameters for the CP 441 5 6 Connection Configuration 5 6 1 Simplified Connection Configuration Enter a connection in the connection table Proceed as follows 1 In SIMATIC Manager display the lt Offline gt Project project window and double click the CPU in your SIMATIC 400 station Result The Connections object connection tab
208. nd Parameter Assignment Manual 04 2012 A5E00405449 03 189 Diagnostics Functions of the CP 441 8 2 Diagnostics Messages of the System Function Blocks 8 2 Diagnostics Messages of the System Function Blocks Status Parameter Every system function block has a STATUS parameter for error diagnostics The STATUS message numbers always have the same meaning irrespective of which system function block is used The tables below are copied from the STEP 7 manual and represent only the current status Refer to the original tables if you discover discrepancies Displaying and Evaluating the STATUS Output You can display and evaluate the STATUS output of the system function blocks using the STEP 7 variable table Further Information For further information on using the variable table see the STEP 7 manual Configuring Hardware and Communication Connections with STEP 7 V5 0 Messages in the STATUS Output of the SFBs The tables below list the messages of the STATUS parameter Error Information for SFB 12 The table contains all the SFB 12 specific error information that can be output in the ERROR and STATUS parameters Table 8 2 Error Information for SFB 12 BSEND ERROR STATUS Description decimal 0 11 Warning New request ineffective because previous request not yet completed 1 1 Communication problems for example e Connection description not loaded local or remote e Connection interrupted e g cable CPU o
209. nection consists of a partial connection from the CPU to the CP 441 in one station and a partial connection from the CPU to the CP 441 in the partner station You therefore have to configure a connection on your partner station as well in order to enable a point to point connection between the two CPUs and the local IDs may be different Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 123 Configuring and Assigning Parameters for the CP 441 5 6 Connection Contiguration 5 6 2 Complete Connection Configuration Introduction To present the point to point connection graphically proceed as follows Select Netpro 1 In SIMATIC Manager display the lt Offline gt Project project window and double click the CPU in your SIMATIC 400 station Result The Connections object connection table appears on the right 2 Double click this icon The Configuring Connections dialog appears Insert a PtP subnet Select Insert gt Network Object to open a catalog In the catalog select Subnets and then select PtP Result The point to point network is displayed Select Connection Partner If your connection partner is another CP 441 the station should already be in the subnet If your partner is an S5 CP PtP a printer a third party device or an S7 CP PtP without communication bus connection CP 340 CP 341 enter Other Station or SIMATIC S5 as a dummy value You do so by
210. neess 2 5 1 Sending data with RK52 aiani ea aa a a a a a a E a aa 2 5 2 Fetching data with RAS 12 cc isione aaa a a a a aad 2 6 Data Transmission with the ASCII Driver ccccceeeeecceeeeeeeeeeeeeaeceeeeeeeseccaaeceeeeeeeseeeenaeeeeeeeess 2 6 1 Sending Data with the ASCII Driver ccc cecceeeeeeeeeeeeeeeeeeeeeeneeeeeeeaeeeeeseneaeeeseneaeeeseeeaeeeseeaeees 2 6 2 Receiving Data with the ASCII Driver eseesssieecrseserrrneseerresrrnnsetrnaarrnnasttnaaatinanatunnaatennaatannaaenaaas 2 6 3 FRAG MOC Cos ce cece etatus se aE EAEE A EEE EERE EE EEEE EEEE EE EE NEEE ERNA 2 6 4 Ro OE e E E E E reer 8 2 7 Data Transmission with the Printer Driver cccceceeecceceeeeeeeeeeeaeceeeeeeesecacaeeeeeeeeesecsasaeeeeees 2 8 Parameter Assignment Data of the Protocols c cceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeseseneeeeeseeeaeeeseeaaaeees 2 8 1 Parameter assignment data of the 3964 R procedure ceecceeeeeeceeeeeeeeeeeeseeeeeeeseeeeeeeeeeeaeees 2 8 2 Parameter assignment data of the RK512 computer link 0 ccc ceeeeeeeeee sence ee eeeeeeeeseeeaeeeeeeenaeees 8 2 8 3 Parameter assignment data of the ASCII driver c ce eeececeeeneeeeeeeneeeeeeeieeeeesaeeeeetaeeeeeeneeeeee 8 2 8 4 Parameter Assignment Data of the Printer Driver 0 ccccceeceeeeeeeeeeeeeeeeeeeeeeeseeeeeeeseneaeeeeeeeeanees 3 2 9 4 Parameter assignment data cearda kasa a d ieee eevee ee ena ied 87 2 8 4 2 Conversion and control statements for pr
211. neither an XON character is received nor CTS is set to ON before a configured time has elapsed the printer output is aborted and an appropriate error message 0708H is entered in the SYSTAT error signaling area of the CP 441 Note RTS CTS data flow control is only possible when the RS232 interface module is used To do this you must wire the used interface signals in the plug connection accordingly BUSY Signal The CP 441 evaluates the printer s BUSY control signal The printer indicates to the CP 441 that it is ready to receive e Inthe case of the CP 441 with the 20mA TTY interface module current on RxD line e Inthe case of the CP 441 with the RS232 interface module signal CTS ON Note When you configure with RTS CTS data flow control you must set the polarity of the BUSY signal on the printer as follows e BUSY signal CTS OFF Please note that some printers use the DTR signal to display the BUSY signal In such cases you must wire the cable to the CP 441 appropriately Point to point Link CP 441 Installation and Parameter Assignment 90 Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 8 Parameter Assignment Data of the Protocols Parameters for data flow control The table below contains descriptions of the parameters for data flow control Data flow control is not possible with the RS485 interface RTS CTS data flow control is only possible when the RS232 i
212. ner is assigned high priority the other low Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 77 Basic Principles of Serial Data Transmission 2 8 Parameter Assignment Data of the Protocols Receive buffer on CP The following table describes the parameters for the CP receive buffer Table 2 5 Receive buffer on CP 3964 R procedure Parameter Description Value range Default value Delete CP receive The CP receive buffer of the CP 441 is not deleted at CPU start up No fixed No buffer at start up STOP RUN transition Use CPU receive Here you can specify whether a receive mailbox is to be set up on the e Yes No mailbox CPU e No You must set up a receive mailbox if you have not programmed a BRCV system function block for the CP 441 in the user program of the CPU If you have programmed a BRCV you must deactivate this parameter otherwise data will be stored in the receive mailbox defined here instead of being processed by the BRCV DB number Number of the data block for the receive mailbox on the CPU 1 to 65535 1 Only when use depending on receive mailbox on the CPU CPU yes X27 RS422 interface You can find the description of the parameters for the X27 RS422 interface in the following table RS485 operation is not possible in conjunction with the 3964 R procedure Table 2 6 X27 RS422 interface 3964 R
213. nition The X27 RS 422 485 interface is a differential voltage interface for serial data transmission in compliance with the X27 standard Properties The X27 RS422 485 interface module has the following properties and fulfills the following requirements e Type Differential voltage interface e Front connector 15 pin sub D female with screwed interlock e Max data transmission rate 115 2 kbps e Max cable length 1200 m at 19200 bps e Standard DIN 66259 Parts 1 and 3 EIA RS 422 485 CCITT V 11 e Degree of protection IP 00 Please observe the maximum permitted data transmission rates for the modules Note With the RK512 and 3964 R protocols the X27 RS422 485 interface module can only be used in 4 wire mode See also X27 RS422 485 interface module Page 247 Point to point Link CP 441 Installation and Parameter Assignment 20 Manual 04 2012 A5E00405449 03 Product Description 7 5 Installation Guidelines 1 5 Installation Guidelines Considerations The general installation guidelines for S7 400 must be followed see the S7 400 Automation System Installation nstallation manual To meet the EMC electromagnetic compatibility values the cable shield must be connected to a shield bus Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 21 Product Description 7 5 Installation Guidelines 22 Point to point Link CP 441 Installation and Parameter Assign
214. nk 2 5 1 Sending data with RK512 Process of Data Transmission when Sending The figure below shows the transmission sequence when sending data with a response frame using the RK512 computer link CP 441 Communication partner SEND PUT message frame Start code 02H STX Oanei Pos acknowledgment 10H DLE setup 001 1stbyte 00H 2nd byte s SEND PUT request 41H 3rd byte Data block 44H 4hbyte ao Message inati 5th byte frame Data destination DB10 0AH Renden DW01 01H 6th byte y Length 00H Tthbyte 7 50 DW 32H 8th byte No KM FFH 9th byte gt CPU 1 only 1FH 10th byte ie 1st data byte _ 11th byte 2nd data byte 12th byte User data nth data byte nth byte y End code 10H DLE gt End code 03H _ ETX Connection with block check only BCC ann release Pos acknowledgment 10H e DLE Response message frame Start code 02H _ SIX Connection Pos acknowledgment 10H _ DLE 7 setup 00H 1st byte Response 00H lt 2nd byte message 00H 3rd byte a AIRE Error code 00H _ __ 4th byte header End code 10H DLE End code 03H lt ETX PE with block check only BCC reicase Pos acknowledgement 10H DLE Fig
215. nnection Configuration 0 cccececeeeeee ects erence N E a 5 6 2 Complete Connection Configuration 0 cccccceeeeeeeeeeeneeeeeeeneee erence AANEEN AAN 5 6 3 Enter a connection in the connection table 5 7 Procedure in the Properties PtP Connection dialOg ccccccccccccseeeeseeneeeeeeteeteeeseeneeniee 5 7 1 Properties PtP Connection dialog procedures for the ASCII driver printer driver and 3964 R procedure ceeeecceecceceneeeeeececeeeeecaeeecaaececeeeceaeeeceaeeecaaesceeeeceaeeeseaeeseeeeeseaeeeseaeeseneeeenees 126 5 7 2 Properties PtP Connection dialog procedure with RK512 computer link e 129 5 8 Firmware Updates tinnen a a e a a a a aaa 5 8 1 Subsequent Loading of Firmware Updates 5 8 2 Viewing the Firmware Version seisis aAA ANAA EAA aa A ANAA AAA aa ARAS Communication via System Function BIOCKS cccccccsssssssssscseeeeesssesseeeeeeeeseessesseeeeeeeeeessesssseseenees 6 1 Overview of the System Function BlockS eesssseesssrenssnnssesnnnussnnasnsnnaaarinnaneennaastnnaannnnaatannaaena 138 6 2 Using the System Function Blocks 002 ccececeecceeeeeeeeeeeceneee cece ee eeeeeaaeaeeeeeeesececaecaeeeeeeeseeeeaees 6 3 Using the System Function Blocks with the 3964 R Procedure cccceeeeeeeeeeeeeeteeeeeeneeeeeeeaas 6 3 1 PD DIGAUOINS ninsi tions weeds ce cca tecen shades cactus A E cits tes eddvaas S 144 6 3 2 Data Transmission with 3964 R Using BSEND and
216. nsequence of error statuses only recognized by initial frame was sent the partner e A first response frame was received after a Otherwise you can assume an error on the part of continuation frame was sent the partner device The error may not occur in the case of requests lt 128 bytes 0A 02H RK512 only Error in the structure of the received Check for malfunction at partner device possibly by response frame 1st byte not 00 or FF using interface test device switched into the transmission line 0A 03H RK512 only Received response frame has too Check for malfunction at partner device possibly by many data or not enough data using interface test device switched into the transmission line 0A 04H RK512 only Response frame for SEND request Check for malfunction at partner device possibly by arrived with data using interface test device switched into the transmission line 0A 05H RK512 only No response frame from partner within Is the partner a slow device This error is also often monitoring time displayed as a consequence of a previous error For example procedure receive errors event class 8 can be displayed after a GET frame was sent Reason As a result of disturbances the response frame could not be received and the monitoring time elapsed This error can also occur if a restart was carried out at the partner before it could respond to the most recently received GET frame 0A 06H RK512 only Received response frame after GET Ch
217. nt 80 Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 8 Parameter Assignment Data of the Protocols Protocol parameters The table below describes the protocol parameters Table 2 7 Protocol Parameters ASCII driver Parameter Description Value range Default value Indicator for end of Defines which criterion signals the end of e After character delay time After character delay receive frame each frame expires time expires e On receipt of delimiter e After receipt of a fixed number of characters Character delay time as of 6ES7 441 xAA05 O0AEO 1 to 65530 ms 2ms CDT The character delay time defines the The shortest character delay maximum permitted time between 2 time depends on the data consecutively received characters transmission rate bps CDT e 300 e 130 e 600 e 65 e 1200 e 32 e 2400 e 16 e 4800 e 8 e 9600 e 2 e 19200 e 1 e 38400 e 1 e 57600 e 1 e 76800 e 1 e 115200 e 1 Character delay time up to 6ES7 441 xAA04 0AE0 2 to 65530 ms 4ms CDT The character delay time defines the The shortest character delay maximum permitted time between 2 time depends on the data consecutively received characters transmission rate bps CDT e 300 e 130 e 600 e 65 e 1200 e 32 e 2400 e 16 e 4800 e 8 e 9600 e 4 e 19200 e 2 e 38400 e 2 e 57600 e 2 e 76800 e 2 e 115200 e 2 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5
218. nt 0 1 DB 1 255 0 255 Outputs Data block QB Irrelevant 0 1 DB 1 255 0 255 Counter Data block Z Irrelevant 0 1 DB 1 255 0 255 Timers Data block T Irrelevant 0 1 DB 1 255 0 255 This value is dictated by the CPU that you use Depending on the CPU of the communication partner 450 bytes Abbreviations S TYPE source type S DBNO source data block number S Offset source start address length source length D TYPE destination type D DBNO destination data block number D Offset destination start address Specifications in the frame header of the RK512 protocol The following table shows the specifications in the RK512 frame header Table 6 16 Specifications in frame header of RK512 protocol Sending data with RK512 to CP 441 communication partner using BSEND Source to the destination Frame header BSEND from S7 S7 Communication Partner BRCV Bytes 3 4 Bytes 5 6 Bytes 7 8 Command D DBNO D Offset Number in mode Data block Data block AD DB DW Words Flag Data block AD DB DW Bytes Inputs Data block AD DB DW Bytes Outputs Data block AD DB DW Bytes Counter Data block AD DB DW Words Timers Data block AD DB DW Words The source information is not transferred to the CP so the CP always enters the ID for DB AD at this point Abbreviations S DBNO destination data block number D Offset destination start address DW Offset in words Point to point Link CP 441 Installat
219. ntains the function blocks of the CP 441 and describes their purpose Table 6 28 Function blocks functions of the CP 441 FB Meaning FB5 The V24_STAT function allows you to read the signal states at the RS 232 V24_ STAT interface of the CP 441 FB6 The V24_SET function allows you to set reset the outputs at the RS 232 interface V24 SET of the CP 441 Scope of Supply and Installation The function blocks of the CP 441 together with the parameter assignment interface and the programming example are supplied on CD which comes with this manual The function blocks are installed together with the parameter assignment interface After installation the function blocks are stored in the following library CP441 You open the library in STEP 7 SIMATIC Manager by choosing File gt Open gt Library For working with the function blocks you only need to copy the required function block in your project Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 175 Communication via System Function Blocks 6 5 Using the System Function Blocks with the ASCII Driver 6 5 1 Reading the RS232 accompanying signals Introduction The V24_STAT FB reads the RS232 accompanying signals from an interface of the CP 441 and makes them available to the user at the module parameters The V24_STAT FB is called statically without conditions in the cycle or alternatively in a time controlled pr
220. nterface and loadable drivers you select the driver you want and set the protocol specific parameters in the same way as you do for the standard protocols Installation of the Parameter Assignment Interface and Selection of a Transmission Protocol see section Connection Configuration Page 122 To find out what is meant by parameter assignment and how to download the drivers to the CP 441 consult the separate documentation for the loadable driver Note The interfaces for the drivers are already integrated in STEP 7 TIA Portal as of V11 Point to point Link CP 441 Installation and Parameter Assignment 120 Manual 04 2012 A5E00405449 03 Configuring and Assigning Parameters for the CP 441 5 5 Subsequent Loading of Drivers Transmission Protocols Note Please note the following e The loadable driver is stored in the CPU s load memory together with the parameter data and loaded automatically onto the CP 441 2 during the loading operation You must therefore reserve the requisite memory space in the load memory of the CPU for every interface on which you want to load the driver e Loadable drivers are sent only once to the CP 441 The driver download 2 SDBs is interrupted if you attempt to assign parameters e Before you transfer the loadable driver to the CP 441 2 you must increase the value of the parameter for transferring parameters to modules for the relevant CPU Allow approximately 15 seconds for each loadable
221. nterface module is used Table 2 14 Data flow control printer driver Parameter Description Value range Default value Data flow control Defines which data flow control procedure e None None Pret e XON XOFF e RTS CTS XON character 1 Code for XON character e At 7 data bits 11 DC1 0 to 7FH Hex e At 8 data bits 0 to FFH Hex 2 XOFF character 1 Code for XOFF character e At7 data bits 13 DC3 0 to 7FH Hex e At 8 data bits 0 to FFH Hex 2 Waiting for XON after Period of time for which the CP 441 should 20 to 65530 ms in 10 ms 2000 ms XOFF wait time for wait for the XON code or for CTS ON of increments CTS ON 3 the communication partner when sending 1 Only for data flow control with XON XOFF 2 Depending on whether you set 7 or 8 data bits for the character frame 3 Only for data flow control with XON XOFF or RTS CTS Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 91 Basic Principles of Serial Data Transmission 2 8 Parameter Assignment Data of the Protocols Page layout The table below contains descriptions of the parameters for the page layout Table 2 15 Page layout printer driver carriage return and line feed LF CR line feed and carriage return Parameter Description Value range Default value Left margin number of Number of spaces to precede each line in e Oto 255 3 characters
222. number of digits used for the year Only 2 and 4 are permitted for dates Note that the precision is always preceded by a period The period serves to identify it and separate it from the width Point to point Link CP 441 Installation and Parameter Assignment 98 Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 8 Parameter Assignment Data of the Protocols Representation type The table below describes the possible representation types of the values of the variables Representation types N and P are exceptions They are explained below the table Uppercase and lowercase letters are permissible for the representation Table 2 19 Representation types in the conversion statement Representation Associated data Standard Width of the Standard Description type type Representation Representation A DATE WORD 10 06 1992 German 10 German date format C CHAR BYTE A 1 Alphanumeric characters WORD B 1 DWORD AB 2 ARRAY OF CHAR ABCD 4 ARRAY OF BYTE ABCDE D DATE WORD 1996 06 10 American 10 Date format according to ICE 61131 3 F REAL DWORD 0 123456 8 Floating point without exponent H All data types incl In accordance with the In accordance with the Hexadecimal format ARRAY OF BYTE data type data type l INT WORD 32767 Max 6 Integer range DINT DWORD 2147483647 Max 11 NO WORD Message text output Integer 0 to 3999 text number P 2 INT WORD Pag
223. o 20 s regardless of the data transmission rate This monitoring time can be reduced by setting the parameters in the RK512 registry dialog of the parameter assignment interface By selecting the dependent on data transmission rate option monitoring is performed with the following maximum waiting times Data transmission rate Time monitoring 300 bps 10s 600 bps 7 sec 1200 bps 5 sec as of 38 400 bps 3 sec The grayed Maximum wait time field is used only for showing the configured monitoring time and cannot be edited Structure and contents of the response frame See also 48 The response frame consists of 4 bytes and contains information on the progress of the request byte Meaning 1 Frame ID in response frames 00H in continuation response frames FFH Frame ID 00H Displays 00H Error number of the communication partner in the response frame e OOH if transmission was error free e gt 00H error number The error number in the response frame automatically causes an error number to be entered in the SYSTAT ommunication via System Function Blocks Page 137 Diagnostics via the error signaling area SYSTAT Page 195 rror Numbers in the Response Message Frame Page Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 5 Data transmission with the RK512 computer li
224. ocedure 2 4 Introduction Startup 32 Data Transmission with the 3964 R Procedure The 3964 R procedure controls point to point data exchange between the communication processor and a communication partner As well as the physical layer layer 1 the 3964 R procedure also incorporates the data link layer layer 2 The figure below illustrates the start up of the 3964 R procedure Power up after restart of the CPU or voltage recovery Evaluate parameter assignment Initialize interface v Send NAK Y Figure 2 4 Flow diagram of the start up of the 3964 R procedure Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 4 Data Transmission with the 3964 R Procedure 2 4 1 Control characters Introduction The RK 512 computer connection provides a very high degree of data integrity During data transmission the 3964 R procedure adds control characters to the information data data connection layer These control characters allow the communication partner to check whether the data has arrived complete and without errors The Control Characters of the 3964 R Procedure The 3964 R procedure analyzes the following control codes e STXStart of Text start of character string for transfer e DLEData Link Escape data connection escape e ETXEnd of Text end of character string for transfer e BCCBlock
225. ock SFB is available to you for outputting message texts toa printer PRINT transfers a process message to the CP 441 for example The CP 441 logs the process message on the connected printer Message texts outputting What To Do The PRINT SFB transfers a message text with up to four variables to the CP 441 The PRINT SFB is called statically without conditions for data transfer cyclically or in a time controlled program The transmission of the message text is initiated by a rising edge at the REQ input The frame starts with the format string of the message text This is followed by tags 1 to 4 SD_1 to SD_4 The DONE output shows request completed without errors ERROR indicates whether an error has occurred In STATUS the error number is displayed in the event of an error If there were no errors STATUS has the value 0 In the S7 user program of the CPU you must program the PRINT system function block SFB 16 You specify as the ID the connection via which PRINT is to be executed also see Chapter Connection Configuration Page 122 The PRN_NR parameter printer number has no significance for the CP 441 since only one printer can be addressed via a serial interface You specify the format string in the FORMAT parameter Proceed as follows 1 You must store the format string in a separate data block If this block does not exist you must define it Make an entry in the declaration field of the DB to output
226. ocol errors occur Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 53 Basic Principles of Serial Data Transmission 2 5 Data transmission with the RK512 computer link Continuation GET frame The figure below shows the transmission sequence when fetching data with a continuation response frame CP 441 Communication partner Continuation GET frame Start character 02H STX Connection pos acknowledgment 10H DLE establishment Continuation frame FFH Ist byte gt 00H 2nd byte gt Frame GET request 45H m 3rd byte gt header Data block 44H 4th byte Delimiter 10H n DLE y Delimiter 03H ETX Connection Block check only BCC termination pos acknowledgment 10H __ DLE Continuation response frame Start character 02H f STX comecisn pos acknowledgment 10H DLE establishment Continuation response frame FFH g a 1st byte 00H 2nd byte aes rame 00H 3rd byte PaT Error number 00H e 4th byte 129th data byte 5th byte 130th data byte 6thibyte User data nth data byte nth byte Delimiter 10H p DLE Delimiter 03H ETX ee Connection Block check only termination e BCC pos acknowledgment 10H DLE Figure 2 16 Sequence of a continuation GET frame with a continuation response frame Point to
227. ogram The RS232 accompanying signals are updated each time the function is called cyclic polling You select the interface by specifying at the V24_STAT FB the local ID of one of the connections that uses this interface The binary result is not affected Block call command STL representation LAD representation CALL V24_STAT V24_STAT 5 l N ENO ERROR Ree ADR ara i Z ID ERROR DTR_OUT 2 STATUS DSR IN z DTR_OUT Ero OGT DSR_IN CTS_IN RTS_OUT DCD_IN CTS_IN RI_IN DCD_IN RIIN Note The EN and ENO parameters are only present in the graphical representation LAD or FBD To process these parameters the compiler uses the binary result BR The binary result is set to signal state 1 if the block was terminated without errors If there was an error the binary result is set to 0 Note A positive input voltage in the RS232 input signals DSR CTS DCD and RI is mapped respectively to the signal state 1 of the FB input signals DSR_IN CTS_IN DCD_IN and RILIN Point to point Link CP 441 Installation and Parameter Assignment 176 Manual 04 2012 A5E00405449 03 Communication via System Function Blocks 6 5 Using the System Function Blocks with the ASCII Driver FB 5 V24_STAT Parameters The following table lists the parameters of the 5 V24_STAT FB Table 6 29 FB5V24 STAT Parameters Name Type Data
228. ols Data transmission rate character frame The following table describes the data transmission rate character frame Table 2 4 Data transmission rate character frame 3964 R procedure Parameter Description Value range Default value Data transmission Data transmission rate in bps e 300 9600 rate Note e 600 A maximum of 19200 bps is possible for the 20mA TTY e 1200 interface module e 2400 e 4800 e 9600 e 19200 e 38400 e 57600 e 76800 e 115200 Start bit During transmission a start bit is prefixed to each character to 1 fixed value 1 be sent Data bits Number of bits onto which a character is mapped e 7 8 e 8 Stop bits During transmission stop bits are appended to every character e 1 1 to be sent indicating the end of the character e 2 Parity A sequence of information bits can be extended to include e None Even another bit the parity bit The addition of its value 0 or 1 e Odd brings the value of all the bits up to a defined status This improves data integrity A parity of none means that no parity Even bit is transmitted Priority A partner has high priority if its send request takes precedence e Low High over the send request of the other partner A partner has low Hich priority if its send request must wait until the send request of the 9 other partner has been dealt with With the 3964 R procedure you must configure both communication partners with different priorities i e one part
229. omatically saves the configuration and parameter assignment data including the module parameters to the project user file you have created Loading the Configuration and Parameters You can now load the configuration and parameters on line from the programming device onto the CPU menu item PLC gt Download The CPU accepts the parameters immediately after the download The module parameters of the CP 441 are transferred to the CP 441 automatically at start up of the CPU as soon as the CP 441 is accessible via the S7 400 rear panel bus Default settings apply if parameters are not changed Reading Back Parameters From STEP 7 V5 0 Service Pack 2 onwards you can view the parameters of the CP 441 modules online using HW Config From this view you cannot change the parameters and they are therefore displayed in gray Further Information In Configuring Hardware and Communication Connections STEP 7 V5 3 the manual for STEP 7 you will find detailed descriptions of how to e save the configuration and parameters e load the configuration and parameters onto the CPU e read modify copy and print the configuration and the parameters Note STEP 7 TIA Portal Information is available in the STEP 7 TIA Portal information system Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 117 Configuring and Assigning Parameters for the CP 441 5 3 Multiprocessor communication
230. on with RK512 Page 151 to Sending data with RK512 to the S i communication partner or third party device a static destination definition Page 161 e Send data from your S7 400 automation system to a communication dynamic destination see section Sending data with RK512 to a communication partner ith dynamic destination definition Page 16 e Fetch data from a communication partner see section Fetching data with RK512 from a communication partner Page 171 6 4 1 Send data with a static destination definition with RK512 Transmission sequence The figure below illustrates how data is sent to a communication partner with static destination definition using RK512 Your programmable controller Communication partner active 7 400 SFB BSEND gt gt rks CL gt or protocol programming necessary Figure 6 2 Sending data to a communication partner with static destination definition with the RK512 computer link Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 151 Communication via System Function Blocks 6 4 Using the system function blocks with the RK512 computer link Note If you are transmitting data via the RK512 computer link you must distinguish between sending data to another CP 441 or linking up to an S5 module or third party device Sending an Odd Number of Data Please note the following when sending an odd numb
231. onnect the cable shield with the GND as this could destroy the submodules The following pages contain examples of cables for a point to point link between the CP 441 and S7 modules or SIMATIC S5 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 241 Cables B 2 20mA TTY interface submodule 20 mA TTY connecting cable S7 CP 441 S7 CP 441 CP 340 The figure below illustrates the cable for a point to point link between a CP 441 and a CP 441 CP 340 You require the following male connectors for the cables 242 The cable is available under the order number 6ES7 902 2 At CP 441 end 9 pin sub D male connector with screw locking At the communication partner 9 pin subminiature D male with screw fixing CP 441 1 i TxD Communication partner l n l Receiver l ti Enclosure shield Cable type LIYCY 4 x 0 14 Enclosure shield i Figure B 8 20mA TTY Connecting Cable CP 441 CP 441 CP 340 Note This cable type LIYCY 4 x 0 14 can be used in the following lengths for the CP 441 as communication partner Max 1000 m at 9600 bps Max 500 m at 19 2 kbps Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Cables B 2 20MA TTY interface submodule 20mA TTY connecting cable S7 CP 441 CP 544 CP 524 CPU 928B CPU 945 CPU 948 The f
232. or in the format string for each variable and the meaning and output format of the variable value must be encoded in this statement Format string The format string allows you to define the format and composition of a message text The format string can consist of Text all printable characters for example The level was reached at hours Conversion statements for variables e g N expression of a message text stored on the CP CP 441 the desired message text number is configured by means of the reference ANYPOINTER addressed to the memory cell in which the message text number is stored in the send variables SD_1 to SD_4 For each variable there must be one conversion statement in the format string The conversion statements are applied to the variables in the sequence in which they occur in the format string Control statements with control characters for bold condensed or italic type and underlining e g B bold type on or with additional control characters you have defined You can use other control characters supported by your printer if you enter them in the control characters table of the CP 441 Configuration Package for Point to Point Communication parameter assignment interface and then make new parameter assignments for the CP 441 Please note that a line feed is carried out by default after each output 94 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 0
233. ou can ignore the settings for interface 2 your communication partner receives the data Device Configuration PS CPU CP1 free free free free free 1 E 0 0 Ou La qo omm m DB42 DB43 Figure 9 1 Data flow Device configuration with a CP 441 2 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 219 Programming Example for System Function Blocks 9 3 Configuring the Controller Setup 9 3 Configuring the Controller Setup Configuration e STEP 7 An S7 400 station is configured using HW Config in STEP 7 Place the modules in the configuration table in accordance with your hardware configuration In the configuration table you must configure the controller setup as follows Power supply e g PS 10A The number of assigned slots depends on the type of power supply CPU The number of assigned slots depends on the type of CPU CP 441 e STEP 7 TIA Portal An S7 400 station is configured in the device configuration of STEP 7 TIA Portal Place the modules in the device view in accordance with your hardware configuration The controller design corresponds to that described for STEP 7 Point to point Link CP 441 Installation and Parameter Assignment 220 Manual 04 2012 A5E00405449 03 Programming Example for System Function Blocks
234. ou send data to a CP 441 by means of an S5 CP or a third party device in this mode you must specify DX as the destination data block with the corresponding number in the request block S5 CP The start address is not evaluated Interprocessor communication flags are not evaluated either The connection via which the data is forwarded from the CP 441 to the S7 CPU is selected by means of the CPU number Up to 4 KB of data can be transferred Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 153 Communication via System Function Blocks 6 4 Using the system function blocks with the RK512 computer link At the CP 441 Communication Partner Example 154 The CP 441 of the communication partner recognizes the type of data transmission you have selected using the data type DX in the RK512 frame header In this case the specifications in the RK512 frame header are not the destination parameters they represent the reference to the R_ID of a BRCV SFB 13 which you must call in the S7 user program of the CPU The following applies DX 0 255 decimal gt R_ID 0 255 decimal The actual destination parameters must be specified in the BRCV system function block with the RD_1 parameter data type ANY The length defines the maximum length of the block to be received Example p DB20 DBX10 0 WORD 2048 The IPC flag byte and bit from the RK512 frame header are not interpreted To prevent unpro
235. ough FFH with 8 data bit character frames or from 00 through 7FH with 7 data bit character frames to be sent and received Sending Data with the ASCII Driver When you send data you specify the number of user data bytes to be transferred in the LEN parameter of the call for the BSEND system function block When you work with the end criterion After expiration of character delay time the ASCII driver pauses between two frames when sending You can call the BSEND SFB at any time but the ASCII driver does not begin with output until a time greater than the configured character delay time has passed since the last frame was sent If you work with the Delimiter end criterion you have 3 options e Send up to and including the end of text character The delimiter must be included in the data to be sent Data is sent only up to and including the delimiter even if the data length specified in the FB is longer e Send up to length configured at the FB Data is sent up to the length configured at the FB The last character must be the delimiter e Send up to the length configured at the FB and automatically append the delimiter or characters Data is sent up to the length configured at the FB The delimiter is automatically appended in other words the delimiters must not be included in the data to be sent 1 or 2 characters more than the number specified at the FB are sent to the partner depending on the number of delimiters Point
236. p behavior sat ist command frame expected and The error can also occur during operation as a continuation frame came consequence of error statuses only recognized by e Continuation command frame expected and 1st the partner frame came Otherwise you have to assume an error on the part of the partner device The error may not occur in the case of requests lt 128 bytes 06 OFH DB locked by coordination function In local program After processing of the last transmission data enable the last receive block with EN In partner program Repeat the request 06 10H Message frame received too short length lt 4 bytes Check for malfunction at partner device possibly by in the case of continuation or response frames or using interface test device switched into the lt 10 bytes in the case of command frames transmission line 06 11H Message frame length and length specified in frame Check for malfunction at partner device possibly by header are not the same using interface test device switched into the transmission line 06 12H Error sending the continuation response frame An See remedy for the error number entered associated procedure error number has been entered in STATUS immediately beforehand immediately beforehand in STATUS Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 203 Diagnostics Functions of the CP 441 8 3 Diagnostics via the error signaling a
237. p the connection between the devices or The connection line receive line to the partner switch the partner device on In the case of TTY device is interrupted Check if there is a current loop in the idle state 08 12H With ASCII driver only Set the parameters for the communications partner More characters were received after the CP had again or read data from CP more quickly sent XOFF or set CTS to OFF 08 15H Discrepancy between settings for transfer attempts Set the same number of transfer attempts at at CP and communication partner communications partner as at CP Check for malfunction at partner device possibly by using interface test device switched into the transmission line 08 16H e The length of a received frame was longer than e A correction is neccesary at the partner or the length agrred upon or e the length of the parametered receive buffer with CP 441 only is too short e the length of the receive buffer with CP 441 only must be enlargened 08 18H With ASCII driver only The partner has switched the DSR or CTS signal to DSR OFF or CTS OFF OFF before or during a transmission Check the partner s control of the RS232 accompanying signals 206 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Diagnostics Functions of the CP 441 8 3 Diagnostics via the error signaling area SYSTAT Event Class 9 09H Response frame received from
238. point Link CP 441 Installation and Parameter Assignment 54 Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission Quasi full duplex operation 2 5 Data transmission with the RK512 computer link Quasi full duplex operation means the partners can send command and response frames at any time as long as the other partner is not sending The maximum nesting depth for command and response frames is 1 The next command frame therefore cannot be processed until the previous one has been answered with a response frame It is possible under certain circumstances if both partners want to send to transmit a SEND PUT frame from the partner before the response frame For example if a SEND PUT frame from the partner was entered in the output buffer of the CP 441 before the response frame In the following figure the continuation response frame to the first SEND PUT frame is not sent until after the partner s SEND PUT frame CP 441 Figure 2 17 Communication partner SEND message frame gt lt Response message frame 1st continuation SEND message frame Partner s SEND message frame 1st continuation response message 2nd contin SEND message frame Response message frame gt 2nd continuation response message frame Quasi full duplex operation Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 55
239. pplying parameters for the system function blocks in your own programmable controller S7 400 The communication between two CP 441s is described For points to note with regard to other communication partners of the CP 441 see the relevant SIMATIC S5 literature or third party literature Description of the SFB Parameters The parameters of the SFBs can be subdivided in terms by function into the following five classes classification e Control parameters for activating communication e Addressing parameters for addressing the remote communication partner e Send parameters which point to the data areas to be sent to the remote partner e Receive parameters which point to the data areas in which the data received from the remote partner is entered e Status parameters for monitoring whether the block has completed a task without errors and for analyzing the errors that occur Control Parameters Data transfer is only activated if the associated control parameters have a defined value when the SFB is called or if the value has changed in a defined way since the last SFB call We therefore refer to them as level or edge triggered control parameters Table 6 2 SFB Control Parameters Parameter Meaning Sender Recipient Function activated at Description REQ Request Sender of the Positive edge compared to last Activates data transfer provided request SFB call In other words before certain condition
240. procedure Parameter Description Value range Default value Initial state of None This setting only makes sense with bus None R A 5V R B OV receive line capable special drivers R A 5V R B OV Break detection is possible with this initial state R A OV R B 5V Break detection is not possible with this initial state R A 5V R B OV R A OV R B 5V Point to point Link CP 441 Installation and Parameter Assignment 78 Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 8 Parameter Assignment Data of the Protocols Initial state of receive line The figure illustrates the wiring of the receiver at the X27 RS422 interface R B none R A TOV O R B R A 5V R B OV co R A yov A 5V o R B R A OV R B 5V g R A TOV Figure 2 26 Wiring of the receiver at the X27 RS422 interface 3964 R procedure See also Parameters for the communications protocols Page 115 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 79 Basic Principles of Serial Data Transmission 2 8 Parameter Assignment Data of the Protocols 2 8 2 Parameter assignment data of the RK512 computer link Introduction You can use the parameter assignment data of the RK512 computer link to adjust the CP 441 to the properties of a
241. pt for DLE or STX or the acknowledgment delay time expires without a response the procedure repeats the connection setup After the defined number of unsuccessful connection attempts the procedure aborts the connection setup and sends the NAK code to the communication partner The CP 441 enters an appropriate error number in its SYSTAT area If a connection is successfully established the user data contained in the output buffer of the communication processor is sent to the communication partner with the chosen transmission parameters The partner monitors the times between incoming characters The interval between two characters must not exceed the character delay time If the communication partner sends the NAK control code during an active send operation the procedure aborts its transmission of the block and tries again as described above beginning with connection setup If a different code is sent the procedure first waits for the character delay time to expire and then sends the NAK code to change the mode of the communication partner to idle Then the procedure starts to send the data again with the connection setup STX Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 35 Basic Principles of Serial Data Transmission 2 4 Data Transmission with the 3964 R Procedure Releasing a Send Connection Once the contents of the buffer have been sent the procedure adds the codes DLE ETX and
242. r is displayed to you on the Diagnostic Buffer in the Module Information dialog You can call the Module Information dialog under STEP 7 from SIMATIC Manager Prerequisite In order to obtain the status of the module there must be an on line connection from the programming device to the programmable controller on line view in the project window Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 211 Diagnostics Functions of the CP 441 8 5 Diagnostics via the diagnostic buffer of the CP 441 See also 212 Proceed as follows 1 Open the relevant SIMATIC 400 station by double clicking it or by choosing the Edit gt Open menu command 2 Open the Hardware object contained in it again by double clicking it or by choosing the Edit gt Open menu command Result The window containing the configuration table appears 3 Select the CP 441 in the configuration table 4 Choose the PLC gt Module Information menu command Result The Module Information dialog appears for the CP 441 The General tab is displayed by default the first time you call it 5 Select the Diagnostic Buffer tab Result The Diagnostic Buffer tab displays the most recent diagnostic events of the CP 441 Any result details on the cause of the problem appears in the lower part of the tab The event s numeric code is displayed in the Event ID field The 16 F1C8 leader for interface 1 an
243. re Parameter Assignment Data of the 3964 R Procedure Using the parameter assignment data of the 3964 R procedure you can adjust the CP 441 to suit the properties of its communication partner With the CP 441 Configuration Package for Point to Point Communication parameter assignment interface you can specify the parameters for the physical layer layer 1 and for the data connection layer 2 of the 3964 R procedure You will find a detailed description of the parameters below X27 RS422 485 interface module Please note the following with reference to the X27 RS422 485 interface module Note When the X27 RS422 485 interface module is used the 3964 R procedure can only be used in four wire mode Point to point Link CP 441 Installation and Parameter Assignment 74 Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 8 Parameter Assignment Data of the Protocols Protocol The following table describes the protocol Table 2 2 3964 R Protocol Parameter Description Default value 3964 with default e The protocol parameters are set to default values 3964R with default values and F and no bl ck e If the CP 441 recognizes the string DLE ETX it stops receiving piper checks and sends a DLE to the communication partner if the block was _ received undamaged or an NAK if it was damaged au E See 3964R with default e The protocol parameters are set to default values eae and
244. re in the case of System function blocks 138 Application 139 Parameters 2 with ASCII driver Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 T Transmission attempts Transmission integrit for printer driver 30 with 3964R with ASCII driver 30 With RK512 U Unidirectional bidirectional data traffic 23 267 Index Point to point Link CP 441 Installation and Parameter Assignment 268 Manual 04 2012 A5E00405449 03
245. re that the products operate safely and without any problems The permissible ambient conditions must be complied with The information in the relevant documentation must be observed All names identified by are registered trademarks of Siemens AG The remaining trademarks in this publication may be trademarks whose use by third parties for their own purposes could violate the rights of the owner Disclaimer of Liability We have reviewed the contents of this publication to ensure consistency with the hardware and software described Since variance cannot be precluded entirely we cannot guarantee full consistency However the information in this publication is reviewed regularly and any necessary corrections are included in subsequent editions Siemens AG A5E00405449 03 Copyright Siemens AG 2012 Industry Sector 05 2012 Technical data subject to change All rights reserved Postfach 48 48 90026 NURNBERG GERMANY Preface Purpose of This Manual This manual explains how to establish and operate a point to point link Contents of the manual The manual describes the hardware and software of the CP 441 communication processor and its integration in an S7 400 automation system The following subjects are covered e The basics of point to point link with the CP 441 e Commissioning the CP 441 e Mounting the CP 441 e Communication via the CP 441 e Troubleshooting e Application examples e Properties and techn
246. rea SYSTAT Event Class 7 07H Send error Event no Event Text To correct or avoid errors 07 01H Sending the first repetition A repetition is not an error however it can be an e Anerror was detected during transmission of the frame or e The partner requested a repetition by means of a negative acknowledgment code NAK indication that there are disturbances on the transmission line or a malfunction of the partner device If the frame still has not been transmitted after the maximum number of repetitions an error number describing the first error that occurred is output 07 02H Error during connection setup Check for malfunction at partner device possibly by e After STX was sent NAK or another code nae Mast ea device switched into the except DLE or STX was received or e The response came too early or e An initialization conflict occurred 07 03H Acknowledgment delay time exceeded The partner device is too slow or not ready to After STX was sent no response came from partner receive or there is a break in the transmission line within acknowledgment delay time for example Check for malfunction at partner device possibly by using interface test device switched into the transmission line 07 04H Termination by partner Check whether the partner also indicates an error One or more codes were received from the partner Possibly it has not received all of the transmitted during send
247. ror in 3rd command byte in the case of Header layout error at partner Check for continuation frames command not as for 1st frame malfunction at partner device possibly by using interface test device switched into the transmission line 06 04H Error in 4th command byte command letter Header layout error at partner or a command incorrect combination has been requested that is not permitted at the CP Check the permissible commands Check for malfunction at partner device possibly by using interface test device switched into the transmission line 06 05H Error in 4th command byte in the case of Header layout error at partner Check for continuation frames command not as for 1st frame malfunction at partner device possibly by using interface test device switched into the transmission line 06 06H Error in 5th command byte DB number not Obtain from the request tables the permissible DB permissible numbers start addresses or lengths 06 07H Error in 5th or 6th command byte start address too Obtain from the request tables the permissible DB high numbers start addresses or lengths 06 08H Error in 7th or 8th command byte impermissible Obtain from the request tables the permissible length DB DX numbers start addresses or lengths 06 09H Error in 9th and 10th command byte coordination Header layout error at partner Find out from the flag for this data type impermissible or bit number request tables when a coordination f
248. rror recognition procedure Debugging Handshaking 5 Session layer Establishing communication Communication control Terminating communication 6 Presentation layer Conversion of the standard form of data representation of the communication system into a device specific form data interpretation rules 7 Application layer Defining the communication task and the functions it requires Processing the Protocols The sending communication partner runs through the protocols from the highest layer no 7 application layer to the lowest no 1 physical layer while the receiving partner processes the protocols in the reverse order i e starting with layer 1 Not all protocols have to take all 7 layers into account If the sending and receiving partners both use the same protocol layer 6 can be omitted Point to point Link CP 441 Installation and Parameter Assignment 28 Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 3 Transmission integrity 2 3 Transmission integrity Introduction Transmission integrity plays an important role in the transmission of data and in selection of the transmission procedure Generally speaking the more layers of the reference model are applied the greater the transmission integrity Classifying the Supplied Protocols The CP 441 can use the following protocols e 3964 R procedure e RK512 computer link e ASCII driver e Printer Driver
249. rst byte of the message frame after the connection setup and ends after the DLE ETX code on connection release Note If DLE duplication occurs the DLE code is accounted for twice in the BCC calculation Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 4 3 2 4 Data Transmission with the 3964 R Procedure Sending data with 3964 R Process of Data Transmission when Sending The figure below illustrates the transmission sequence when data is sent with the 3964 R procedure CP 441 Communication partner Start code 02H Tn STX gt Connection Pos acknowledgment 10H lt _ DLE setup 1st data byte 1st byte gt 2nd data byte 2nd byte _ User s data nth data byte nth byte End code 10H _ DLE gt End code 03H ETX gt pede 3964R only BCC gt ESERE Pos acknowledgment 10H lt _ DLE _ Figure 2 6 Data traffic when sending with the 3964 R procedure Establishing a Send Connection Sending Data To establish the connection the 3964 R procedure sends the control character STX If the communication partner responds with the DLE code before the acknowledgment delay time expires the procedure switches to send mode If the communication partner answers with NAK or with any other control code exce
250. ry of the central processing unit into the programming device Function blocks FBs Function blocks are components of the user program and are according to IEC standard blocks with memory The memory for the function blocks is an allocated data block the instance data block Function blocks can be parametered i e you can use them with and without parameters Hardware Hardware is the entire physical and technical equipment of a programmable controller Instance data block The instance data block is a block allocated to a function block which contains data for this special function block Interface module Signals are converted physically on the interface module By selecting different plug in interface modules you can adjust the communication processor to suit the properties of the communication partners Interrupt Interrupt is a term that designates the interruption of the processing of a program in the processor of a programmable controller by an external alarm Module Modules are pluggable PCBs for programmable controllers Module parameters Module parameters are values with which the behavior of the module can be set There are two different types of module parameters static and dynamic Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 261 Glossary Online Help STEP 7 provides you with the option of having context dependant help texts displayed on th
251. s e g XON XOFF Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 23 Basic Principles of Serial Data Transmission 2 1 Serial transmission of a character Bidirectional Data Traffic Operating Modes The communication processor has two operating modes for bidirectional data traffic e Half duplex operation 3964 R procedure ASCII driver RK512 The data is exchanged between the communication partners in both directions alternately In half duplex operation therefore at any one time data is being either sent or received The exception to this may be individual control characters for data flow control e g XON XOFF which can also be sent during a receive operation or received during a send operation e Full duplex operation ASCII driver The data is exchanged between the communication partners in both directions simultaneously it can both send and receive at the same time Every communication partner must be able to operate a send and a receive facility simultaneously Only half duplex mode can be used with an X27 interface module RS422 485 set to RS485 2 wire Asynchronous Data Transmission Declarations 24 With the communication processor serial transmission occurs asynchronously The so called time base synchronism a fixed timing code used in the transmission of a fixed character string is only upheld during transmission of a character Each character to be s
252. s the data of all BSENDs with different R_IDs must be received by means of a BRCV No more than one BRCV system function block can therefore be created for a serial interface The value 0 must be specified for the R_ID parameter For the RD_1 parameter data type ANY specify where the data is to be stored destination The length defines the maximum length of the block to be received Example p DB20 DBX10 0 WORD 2048 To prevent unprocessed data from being overwritten you must call the BRCV with the value 0 at the control input EN_R Note that you might have to use the CP 441 Configuration Package for Point to Point Communication parameter assignment interface to disable delete a receive mailbox on the CP 441 as otherwise the data will be placed in the data block specified in the receive mailbox instead of being fowarded to BRCV Point to point Link CP 441 Installation and Parameter Assignment 146 Manual 04 2012 A5E00405449 03 Communication via System Function Blocks Example Table 6 6 STL 6 3 Using the System Function Blocks with the 3964 R Procedure Example of Calling SFB12 BSEND using 3964 R L T CALL SFB 12 DB62 REQ R ID R_ID DONE ERROR SD 1 LEN Table 6 7 STL STATUS 50 DB60 DBW806 DB60 DBX812 0 DB60 DBX812 1 W 16 1000 W 16 5 DB60 DBX812 2 DB60 DBX812 3 DB6 0 DBW802 p DB10 DBX5 0 WORD 1 DB60 DBW806 Example of Calling SFB13 BRCV u
253. s and fulfills the following requirements e Type Voltage interface e Front connector 9 pin sub D male connector with screw locking e Max data transmission 115 2 kbps rate e Max cable length 15m e Standard DIN 66020 DIN 66259 EIA RS232 CCITT V 24 V 28 e Degree of protection IP 00 Please observe the maximum permitted data transmission rates for the modules See also RS232 interface module Page Point to point Link CP 441 Installation and Parameter Assignment 18 Manual 04 2012 A5E00405449 03 Product Description 1 4 Properties of the Serial Interface 1 4 2 Attributes of the 20mA TTY interface submodule Definition The 20mA TTY interface module is a current loop interface used for serial data transmission Properties The 20mA TTY interface module has the following attributes and fulfills the following requirements e Type Linear current interface e Front connector 9 pin subminiature D female with screw interlock e Max data transmission rate 19 2 kbps e Max cable length 1000 m at 9600 bps e Standard DIN 66258 Part 1 e Degree of protection IP 00 Please observe the maximum permitted data transmission rates for the modules See also 20mA TTY interface submodule Page 240 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 19 Product Description 7 4 Properties of the Serial Interface 1 4 3 Properties of the X27 RS422 485 interface module Defi
254. s are fulfilled you call the SFB with 1 it must have run through once with 0 R Reset Sender of the Positive edge compared to last Activates cancellation of an request SFB call In other words before active data transfer you call the SFB with 1 it must have run through once with 0 EN_R Enabled to Recipient of the Level 1 Indicates readiness to receive receive request Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 139 Communication via System Function Blocks 6 2 Using the System Function Blocks Addressing Parameters Note The addressing parameters ID and R_ID are only evaluated the first time the block is called the actual parameters or the predefined values from the instance The communication relationship connection to the remote partner is thus defined at the first call and remains so until the next restart of the CPU Table 6 3 SFB Addressing Parameters Parameter Description Note ID At the SFBs you specify as the ID the local ID a hexadecimal ID must be specified value between 1000 and 1400 of the connection via which the in the form W 16 wxyz system function block is to go In order to do this you must first have configured the connection using STEP 7 You get the value of the Local ID from the Configuring Connections dialog in STEP 7 R_ID The meaning of the R_ID parameter is given in the subsequent R_ID must be specified
255. s in the standard format unspecified time units are inserted with zeros Example 4 1 234560E 02 Format string 12 6R Variable SD_1 1 23456E 002 A width of 10 is available to display the whole variable with the precision number of places after the decimal point taking up 6 characters Example 5 TEST Format string 6C Variable SD_1 TEST Left aligned formatting of the text variable Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 103 Basic Principles of Serial Data Transmission 2 8 Parameter Assignment Data of the Protocols Control statements Examples 104 Control statements are used to achieve specific results in the printout e g underlining In addition to the standard control statements for bold condensed expanded or italic type and underlining you can also use other control characters if you enter them in the control character table of the CP 441 Configuration Package for Point to Point Communication parameter assignment interface e g K for small caps The figure illustrates the structure of the control statement schematically Output of the character gt gt Output of the character gt Switch on Bold type B o Switch off Condensed type Cc gt Expanded type E gt Italic type gt Small capitals K g
256. s of the display elements Error Messages of the CP 441 Display Elements Error display INTF comes on Error Description CP 441 signals internal fault e g hardware fault or software error To correct or avoid errors Program the STATUS SFB for detailed information or read the diagnostic buffer of the CP 441 EXTF comes on CP 441 signals external fault e g break on the line Program the STATUS SFB for detailed information or read the diagnostic buffer of the CP 441 FAULT off Interface ready for operation or interface submodule not plugged in FAULT flashing Interface initialized and ready for operation but Check configuration and connection slowly communication via S7 400 backplane bus not configuration for incorrect entries e g slot ID possible no etc FAULT flashing fast Invalid parameter s or wrong or faulty interface Check the parameter settings in the submodule inserted module and interface CP441 Configuration Package for Point to Point parameters not compatible Communication parameter assignment interface and or the interface submodule FAULT lit up No interface parameters or serious fault in Assign parameters in the CP441 Configuration submodule hardware Package for Point to Point Communication parameter assignment interface or check the interface submodule See also Subsequent Loading of Firmware Updates Page 133 Point to point Link CP 441 Installation a
257. s which have occurred during communication between the CP 441 and the assigned CPU You can evaluate the STATUS parameter in the user program see section Diagnostics Messages of he System Function Blocks Page 190 Error message area SYSTAT The programming of the STATUS system function block in the user program allows you to obtain the status of an interface By reading SYSTAT you obtain detailed information on errors events that have occurred during communication between the CP 441 the assigned CPU and the communication partner connected at this interface see section Diagnostics ia the error signaling area SYSTAT Page 195 Error Numbers in the Response Frame If you are working with the RK512 computer link and an error occurs at the communication partner in a SEND or GET frame the communication partner sends a response frame with an error number in the 4th byte see section Error Numbers in the Response Message Page 209 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 187 Diagnostics Functions of the CP 441 Diagnostic Buffer of the CP 441 All the errors events in the SYSTAT error signaling area of the CP 441 are also entered in the diagnostic buffer of the CP 441 In the same way as with the diagnostic buffer of the CPU you can also use the STEP 7 information functions on the programming device to display the user relevant information of the CP diagnostic buffer
258. selecting Insert gt Network Object In the open catalog select Stations and then select Other Station orSIMATIC S5 You then have to identify the station as a PtP station To do so Double click on the station select user list and click the New button select PtP station and link the station into the network by selecting the point to point network with PtP Network Attaching the CP 441 and Connection Partner to the PtP Network Use the mouse to drag the PtP connection of the CP 441 to the PtP network in order to attach it Point to point Link CP 441 Installation and Parameter Assignment 124 Manual 04 2012 A5E00405449 03 Configuring and Assigning Parameters for the CP 441 5 6 Connection Configuration 5 6 3 Enter a connection in the connection table Entering a Connection 1 Select Insert gt Connection to add a new connection to the connection table of the CPU you selected 2 In the New Connection dialog select SIMATIC 400 station 2 or Other Station or SIMATIC S5 as communication partner and enter S7 PTP Connection as the connection type Then click OK to exit the dialog 3 In the Object Properties dialog set the specific properties of the connection Properties PtP Connection dialog procedures for the ASCII driver printer driver and 3964 R procedure Properties PtP Connection dialog procedure with RK512 computer link Page 129 4 Click OK to return to the Configuring Connections dialog
259. sing 3964 R Call for SFB 12 Following a rising edge at the data for a length of 50 bytes the REQ parameter starting at data byte 5 in DB10 is sent to the communication partner with the BSEND request SET ID R_ID NDR ERROR STATUS RD 1 LEN CALL SFB 13 DB63 DB60 DBX812 4 gt WH16 1001 W 16 0 DB60 DBX812 5 DB60 DBX812 6 DB60 DBW800 p DB20 DBX10 0 WORD 2048 DB60 DBW804 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Call for SFB 13 The data is received with the BRCV request and stored in DB20 The LEN parameter shows the length of the received data 50 bytes starting at data byte 10 Note that this protocol requires 0 as the R_ID of the BRCV system function block 147 Communication via System Function Blocks 6 3 Using the System Function Blocks with the 3964 R Procedure Request Table The following table lists the data types which can be transmitted Table 6 8 Request table for sending data with the 3964 R using BSEND and BRCV Source To Destination Parameter assignment at Parameter Assignment Parameter Assignment at BSEND from S7 Communication SFB BSEND in BSEND SFB SFB BRCV Partner Parameter SD_1 source Paramon N Parameter RD_1 Source Destination S S DBNO S Offset Length D D DBNO D Offset TYP byte max 4096 byt
260. ssage texts with variables and control statements e g for bold condensed expanded or italic type and underlining Each message text is assigned a number during parameter assignment You print out a specific message text by specifying a reference to the memory cell containing the message text number for send parameters SD_1 to SD_4 of the PRINT system function block e Page layout You can configure the margins possible line breaks and headers and footers e Character set The ANSI character set is converted to the printer character set by STEP 7 by means of a character conversion table You can change a character conversion table suggested for a printer type in order to include special characters required for a particular language for example Control characters By means of a control character table you can change the control statements in the message text for the printer emulation for switching on and off bold condensed expanded or italic type and underlining and to add control characters To output n bytes of user data to a printer the format string and the variables of the message text must be specified as parameters when the PRINT system function block is called During output the data is edited for printing The print editing is performed as configured in the CP 441 Configuration Package for Point to Point Communication parameter assignment interface page layout character set control characters etc Characters ar
261. suit the properties of the communication partners by means of plug in interface modules There are three interface modules available RS232 interface module 20mA TTY interface module X27 RS422 485 interface module e Transmission rate CP 441 1 6ES7 441 1AA04 0AE0 CP 441 1 6ES7 441 1AA05 0AE0O CP 441 2 6ES7 441 2AA04 0AE0 CP 441 2 6ES7 441 2AA05 0AE0O Max 38 4 kbps Max 115 2 kbps Max 115 2 kbps sum data transmission rate Max 115 2 kbps per interface e Integration of the most important transmission protocols in the module firmware e Custom parameter assignment of the transmission protocols with the CP441 Configuration Package for Point to Point Communication parameter assignment interface e For CP 441 2 from order number 6ES7 441 2AA02 0AE0 to order number 6ES7 441 2AA04 0AE0 is the reloading of customer specific driver transmission protocols with the CP 441 Configuration Package for Point to Point Communication possible Note Modbus The firmware of the CP 441 2 with order number 6ES7 441 2AA05 0AE0 already includes drivers for Modbus master Modbus slave and Data Highway that can be used with a dongle Configuration of the reloadable drivers requires the installation of the packages for Modbus master and Modbus slave Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 11 Product Description 1 1 Applications for the Comm
262. t The table below contains descriptions of the parameters for the character set Table 2 16 Character set printer driver Parameter Description Value range Default value Printer character set If you set IBM the system character set e IBM IBM that is set in Windows is used conversion of the ANSI character set to the printer character set e User defined If you set User Defined you can adapt the character set to include special characters for a particular language Control characters The table below contains a description of the parameter for control characters Table 2 17 Control characters printer driver Parameter Description Value range Default value Printer emulation Sets the printer emulation printer e HP DeskJet HP DeskJet commands for the following control e HP LaserJet characters bold condensed expanded and italic type and underlining e IBM Proprinter If you set User defined you can modify the e User defined printer emulation and include additional control characters of the printer The characters A to Z and a to z are permissible as control characters Message texts You can configure message texts with variables and control statements e g for bold condensed expanded or italic type and underlining Each message text is assigned a number during parameter assignment You print out a specific message text by specifying a reference to the memory cell
263. t Underlining standard control statement U Figure 2 31 Schematic structure of a control statement Here are some examples with control statements e Example 1 To print the text Bold type and underlining are ways of highlighting a text you have to enter the following BBold type B and Uunderlining U are ways of highlighting a text e Example 2 To output the format string with the conversion statement Message text no i of 8 2A transparently on the printer you have to enter the following Message text no i of 8 2A Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 8 Parameter Assignment Data of the Protocols Beginning a New Page F Given the configured page layout i e the configured headers and footers and the number of lines per page the F control statement can be used to begin a new page This differs from a pure form feed on the printer Example Beginning a new page Format string F Note In the case of the F control statement there must be no further text conversion or control statements in the format string The variables remain unassigned Printing Without a Line Break x The CP 441 normally appends the configured end of line character CR LF CR LF LF CR when when it sends a message text The x control statement cancels the line break after
264. t page 1 This conversion statement allows you to set the page number to a specific value The conversion statement variable contains the number to be set Example Setting the page number to 10 Format string P Variable SD_1 10 page number 10 Note In the case of the P representation type there must be no further text conversion or control statements in the format string The P representation type is not permitted in configured message texts Notes on the Conversion Statement Please note the following in relation to conversion statements Whenever a maximum length is specified for the standard representation the actual output can also be shorter Example The output of the integer 10 consists of only 2 characters The length of the data to be printed depends on the length of the variables For example in the case of the representation type a maximum of 6 characters can be output for the INT data type and a maximum of 11 characters for the DINT data type A width of 0 is not permissible in conversion statements This is printed out as with the valid conversion statement If the specified width is too small in the case of text based output representation types A C D S T Y and Z only the number of characters corresponding to the specified width are output the output is truncated In all other cases characters are output corresponding to the width Undefined or invalid conversion state
265. ta is available to the user program ERROR VAR_OUTPUT BOOL Rising edge indicates error STATUS VAR_OUTPUT WORD Contains detailed error message or warning 252 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 SFB Parameters PUT System Function Block SFB 15 Parameter Type Type Meaning REQ VAR_INPUT BOOL Activates a transfer at rising edge ID VAR_INPUT WORD Unique communication connection to a communication partner ADDR_1 VAR_IN_OUT ANY Pointer to the data areas in the partner CPU into which data will be written ADDR_4 SD_1 VAR_IN_OUT ANY Pointer to the data areas of the local CPU which contain the data to a be sent SD_4 DONE VAR_OUTPUT BOOL Signals successful completion of PUT request with rising edge ERROR VAR_OUTPUT BOOL Rising edge indicates error STATUS VAR_OUTPUT WORD Contains detailed error message or warning PRINT System Function Block SFB 16 Parameter Type Type Meaning REQ VAR_INPUT BOOL Activates a transfer at rising edge ID VAR_INPUT WORD Unique communication connection to a communication partner PRN_NR VAR_IN_OUT BYTE Selects a specific printer when several are connected FORMAT VAR_IN_OUT STRING Format string for the message text including the conversion and control statements for variables SD_1 to SD_4 SD_1 VAR_IN_OUT ANY Variables in the messa
266. ta with RK512 from a communication partner The figure below illustrates how data are fetched from a communication partner Your programmable controller Communication partner 00 active S7 4 No SFB Co gt RK512 L gt programming protocol necessary Figure 6 4 Fetching data from a communication partner with the RK512 computer link Fetching data with RK512 from a communication partner What To Do To fetch data from a communication partner proceed as follows On Your Programmable Controller In the S7 user program of the CPU you must program the GET system function block SFB 14 For the ADDR parameter ANY data type you specify the data you want to fetch from the partner source The parameter limits of the RK512 protocol mean that only data blocks 1 to 255 of the partner can be reached Only even numbers a maximum of 450 bytes can be specified as the offset for the data types DB C and T In the case of the data types MB IB and QB the maximum offset is 255 bytes Example p DB10 DBX6 0 WORD 10 For the RD parameter ANY data type you specify where the data is stored on your module destination The length specified must agree with the value specified for the SD parameter For the transfer of timers and counters the CHAR data type must be specified for the data block in which the timers or numbers are stored Example p DB10 DBX6 0 CHAR 2 Point to point Link CP 441 Installation and Parameter Assignment
267. th byte in diagnostic data of the CP 441 in hexadecimal notation Event 1 byte 2 byte 3 byte 4 byte Wire break 2DH 1CH 02H 00H Incorrect parameter 8BH 1CH 00H 00H Diagnostic Information CP 441 with two Interfaces DS 1 contains the information as to which interface of your CP 441 2 6ES7 441 2AA03 OAEO had an error You can read DS 1 by calling SFC 59 RD_REC A bit is set in byte 8 for each interface on which an error occurs Byte 8 7 6 5 4 3 2 1 0 L Error on interface 1 IF 1 Error on interface 2 IF2 Point to point Link CP 441 Installation and Parameter Assignment 214 Manual 04 2012 A5E00405449 03 Diagnostics Functions of the CP 441 8 6 Diagnostic interrupt The error is defined in byte 9 for interface 1 or byte 10 for interface 2 Byte 9 Interface 1 7 6 5 4 3 2 1 0 __ Incorrect parameters Line break Byte 10 Interface 2 7 6 5 4 3 2 1 0 Relationship of the diagnostics interrupt and the CPU operating mode A diagnostics interrupt is generated via the I O bus when fault events rising edge and back to normal events falling edge occur When the CPU switches from STOP mode to RUN mode the following happens e Events both fault and back to normal which occurred when the CPU was in STOP mode are not stored e Events that are still present when th
268. tics Diagnostic buffer 195 Error Numbers in the Response Frame 209 Error signaling area SYSTAT Diagnostics functions Display elements Messages in the STATUS Output of the SFBs 190 Diagnostics interrupt 213 Display elements LED 16 Display elements LEDs E End criterion End delimiter Expiration of the character delay time Fixed frame length 265 Index End delimiter Error message area SYSTAT F Fetching data RK512 Firmware updates Subsequent downloading Format string 94 Frame header Format of a RK512 command frame 47 Full duplex operation 24 Function blocks Diagnostic messages 190 Functions FC 5 V24_STAT 177 FC 6 V24_SET G GET frame 46 H Half duplex operation Handshaking Indicator for end of receive frame 81 Initial state of receive line 88 Initialization initialization conflict Installation guidelines Installing the interface modules Interface RS232 18 X27 RS422 485 20 Interface modules 20mA TTY Applications 13 Interface submodules 20 mA TTY RS232 233 X27 RS422 485 ISO 7 Layer Reference Model 266 L LEDs 17 Loadable drivers 120 133 M Message frame pon when received Message texts Character conversion os 72 Control characters Control characters table 72 Control statements Conversion statements a variables 98 Format strin Page layout variables 9 Message texts outputting Mounting the CP
269. time or fixed frame length code transparent e Code transparent operation is not possible when the data flow control XON XOFF is used Code transparent means that any character combinations can occur in the user data without the end criterion being recognized Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 61 Basic Principles of Serial Data Transmission 2 6 Data Transmission with the ASCII Driver End Criterion Expiration of Character Delay Time When data is received the end of the frame is recognized when the character delay time expires The received data is accepted from the CPU In this case the character delay time must be set such that it easily expires between two consecutive frames But it should be long enough so that the end of the frame is not falsely identified whenever the partner in the link takes a send pause within a frame The figure below illustrates a receive operation with the end criterion expiration of character delay time Waiting for g character 2 2 Z oO 5 5 Character g arrived 2 3 z g g 2 Character received Error when receiving v E with character delay not a character delay g time monitoring time error D D a D Waiting for character 2 delay time Received E Message frame characters discarded complete character 5 delay time expired S Message frame ArT entered i
270. tions an error number describing the first error that occurred is output 08 02H Error during connection setup Check for malfunction at partner device possibly by e In idle mode one or more random codes other using interface Test device Switchedinto the than NAK or STX were received or transfhissionine e after an STX was received partner sent more codes without waiting for response DLE After POWER ON of the partner e While partner is being activated CP receives an undefined code 08 05H Logical error during receiving Check if partner DLE in frame header and in data After DLE was received a further random code string is always in duplicate or the connection is other than DLE or ETX was received released with DLE ETX Check for malfunction at partner device possibly by using interface test device switched into the transmission line 08 06H Character delay time exceeded Partner device too slow or faulty Use an interface Twosuccessive chataciers wele nobiecenisd test device switched into the transmission line to within character delay time or check e 1 1st character after sending of DLE during connection setup was not received within character delay time 08 08H Block check character BCC error only in the case Check if there is a serious problem with the of RK512 with the 3964R procedure and the 3964R connection In this case error codes of the event procedure class 8 event number 12 sometimes occur Check Internall
271. tive because previous request not yet completed 1 Communication problems for example e Connection description not loaded local or remote e Connection interrupted e g cable CPU off 1 2 Negative acknowledgment from partner device The function cannot be executed 1 4 Error in receive area pointers RD_i regarding data length or data type 1 8 Access error at the partner CPU 1 10 Access to local user memory not possible for example access to deleted DB 1 12 The SFB call e specified an instance DB which does not belong to SFB 14 e specified a global DB instead of an instance DB e did not have an Instance DB programming device load a new instance DB 1 20 Insufficient main memory 192 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Diagnostics Functions of the CP 441 8 2 Diagnostics Messages of the System Function Blocks Error Information for SFB 15 The table contains all the SFB 15 specific error information that can be output in the ERROR and STATUS parameters Table 8 5 Error Information for SFB 15 PUT ERROR STATUS Description decimal 0 11 Warning New request ineffective because previous request not yet completed 1 1 Communication problems for example e Connection description not loaded local or remote e Connection interrupted e g cable CPU off 1 2 Negative acknowledgment from partner device The function cannot be executed 1
272. to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission Send Operation 2 6 Data Transmission with the ASCII Driver When you work with the end criterion Fixed frame Length the amount of data transferred in the send direction is as specified for the LEN parameter of the BSEND The amount of data transferred in the receive direction i e in the receive DB is specified at the receiver using the fixed frame length parameter in the parameter assignment interface The two parameter settings must be identical in order to ensure correct data traffic A pause equal to the length of the character delay time CDT is inserted between two frames when sending to allow the partner to synchronize recognize start of frame If some other method of synchronization is used the pause in sending can be deactivated by means of the parameter assignment interface Note During parameter assignment of the XON XOFF data flow control user data may not contain any of the configured XON or XOFF characters The default settings are DC1 11H for XON and DC3 13H for XOFF The figure below illustrates a send operation Waiting for send request Send request arrived Request processed v The amount of data to Sending be sent is taken from user data the LEN parameter of the SFB BSEND Figure 2 20 Sequence
273. tween CPU and CP 441 The system function blocks form the software interface between the CPU and the CP 441 They are called from the user program Communication between CP 441 and a Communication Partner The transmission protocol conversion takes place on the CP 441 The protocol is used to adpat the interface of the CP 441 to the interface of the communication partner This enables you to link an S7 automation system with any communication partner that can handle the standard protocols ASCII 3964 R procedure or RK512 computer link Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 137 Communication via System Function Blocks 6 7 Overview of the System Function Blocks 6 1 Introduction Overview of the System Function Blocks The S7 400 programmable controller provides you with a number of system function blocks which initiate and control communication between the CPU and the CP 441 communication processor in the user program The system function blocks are stored permanently in the CPU memory 7 400 System Function Blocks The following table shows the system function blocks of the S7 400 programmable controller which you can use for communication between the CPU and the CP 441 Table 6 1 System function blocks of the S7 400 programmable controller SFB Meaning BSEND The BSEND system function block allows you to send data from an S7 data area to a SFB 12 communi
274. ty bit 1 stop bit 8 data bits 1 start bit 8 data bits 1 stop bit Signal state 1 N o Signal state 0 1 start bit 1 stop bit oO 8 data bits Figure 2 1 10 Bit Character Frame Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 25 Basic Principles of Serial Data Transmission 2 1 Serial transmission of a character Character Delay Time The figure below shows the maximum time permitted between two characters received within a frame This is known as the character delay time Signal nth character n 1 th character Character delay time Time t Figure 2 2 Character Delay Time Point to point Link CP 441 Installation and Parameter Assignment 26 Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 2 Transmission Procedure with a Point to Point Connection 2 2 Transmission Procedure with a Point to Point Connection Introduction When data are transmitted all communication partners must adhere to a fixed set of rules for handling and implementing data traffic The ISO has defined a 7 layer model which is recognized as the basis for a worldwide standardization of transmission protocols for computer to computer communication ISO 7 Layer Reference Model for Data Transmission All communication partners must adhere to a fixed set of rules for handling and implementing data traffic Such rules are called protocols
275. u need only one connection for your interface you do not need to specify any settings in the Properties PtP Connection dialog Several connections configured In the Communication direction field of the Properties PtP Connection dialog you have to specify whether you want to send active requests BSEND PUT GET and or receive passive requests BRCV telegrams via the selected connection and for Partner and Local you have to specify the CPUs via which the connection will be routed If you want to send and receive telegrams you must make an entry for both Partner and Local 1 Local gt Partner For the connections via which you send telegrams BSEND PUT GET 2 Partner gt Local For the connections via which you receive telegrams BRCV 3 Local Partner For the connections via which you send and receive telegrams Point to point Link CP 441 Installation and Parameter Assignment 130 Manual 04 2012 A5E00405449 03 Configuring and Assigning Parameters for the CP 441 5 7 Procedure in the Properties PtP Connection dialog Local connection is selected using RK512 CPU no The RK512 protocol allows you to specify a CPU No in the range 1 4 in the telegram header in order to address up to four 4 CPUs connections When receiving telegrams BRCV enter CPU no 1 to 4 here The CP 441 compares the CPU number you have set here with the one specified by byte 10 of the header of the receiving RK512 fram
276. udelen ieasioteseuedeetieerieenieds ith teat ETE RE 213 9 Programming Example for System Function Blocks cccccccccssssssseeeeeeeeesssssseeeeeeeeeesssessenseeeeeeess 217 9 1 General Information ccceeeeeceeeeeeeceeeeeeeeeeeeeeaeeeeeseaeeeeeeaaeeeeesaeeeeesaaeeeseeaeeeeseaaeeeeseneeeseenaees 217 9 2 Device Coniguratiofi ossessi alee dee ded ies eee ideas eke pee 219 9 3 Configuring the Controller SCtup eee eeeeeeeeceneeeeeeeeneeeeeeeaeeeseeeaeeeeeeaaeeeeeeaeeeeeeiaeeeeeenaeeeeeeaas 220 9 4 Parameterizing the CP 441 oo ceeceeeceeeeeeeeeeeeeneeeeeeeeneeeeeseaeeeeeseaeeeeesaeeeeeseeeeeeeseneeeeeseneaeeeseenaees 221 9 5 Configuring the Connection to the Communication Partner cccceeeeeeeeeeeeeeceeeeeeeseeeeeeaes 222 9 6 Programming an ASCII 3964 R User Program c ccceceeeeeeeeeeeeeeeeeeneeeeeeaeeeeeeenaeeeeeenaeeeeneaaes 9 7 Programming an RK512 user PrOgram cccececceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeseeeeeeeseneaeeeseneaeeeeeeaaees 224 9 7 1 Program CP 441 RK512 Send RecV saiascnsceyrantniderrnatatyescinasensciciasyenatouotiancnserienate tractors snctncssil 224 9 7 2 Blocks Used in the Sample Program s ssssssssierersiststststnsrsnststnnnsnnnnnnnnn nn nnnnnnnnnnnn nnne nenene Dead 226 9 8 Programming a Printer User Program cccccceeeeseeeeeeeeeeeeeeseeeeeeeeseneeeeeseneeeeeseneaeeesenaeeeeeenaees 227 9 8 1 Cyclic Programen mensenn e a e e a a r etree rr eer rere cre err err 228 9 8
277. umber Point to point Link CP 441 Installation and Parameter Assignment 46 Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 5 Data transmission with the RK512 computer link Structure of the frame header The table below indicates the structure of the header of the command frame Table 2 1 Format of the frame header for the command frame RK512 byte 1 Meaning The frame ID in command frames 00H in continuation command frames FFH Frame ID 00H A 41H for SEND PUT request with destination DB or O 4FH for SEND request with destination DX or E 45H for GET request Data to be transmitted consists of D 44H data block l 45H Input bytes O 41H Output bytes M 4DH flag bytes C 5AH counter cells T 54H Time cells The entry for send requests with BSEND and PUT is always D irrespective of the areas from which the data come 5 and6 Data destination of SEND PUT request or data source of GET request e g byte 5 DB no byte 6 DW no RK512 addressing describes data source and destination with word limits Conversion to byte addresses in SIMATIC S7 is automatic 7 and 8 Length of high byte Length of data to be transmitted according to type in bytes or Length of low byte words Byte number of the interprocessor communication flag You can specify interprocessor communication flags for send requests with BSEND
278. unication Processor Combination options for CP with interface module NOTICE For CP 441 up to order number 6ES7 441 xAA04 0AE0 IF 963 interface modules with order number 6ES7 963 xAA00 0AA0 are used For CP 441 as of order number 6ES7 441 xAA05 0AE0 the IF 963 interface modules with order number 6ES7 963 xAA10 OAAO must be used Interface module CP CP 441 x 6ES7 441 xAA04 0AE0 CP 441 x 6ES7 441 xAA05 0AE0 CP 441 1 x 1 CP 441 2 x 2 CP 441 1 x 1 CP 441 2 x 2 IF963 module RS232 e z 6ES7 963 1AA00 0AA0 IF963 module TTY e t 6ES7 963 2AA00 0AA0 IF963 module RS422 RS485 e 2 6ES7 963 3AA00 0AA0 IF963 module RS232 E e e 6ES7 963 1AA10 OAA0 IF963 module TTY e e 6ES7 963 2AA10 OAA0 IF963 module RS422 RS485 e e 6ES7 963 3AA10 0AA0 Integrated Transmission Protocols The following transmission protocols are integrated in the module firmware of the CP 441 Table 1 1 Transmission Protocols in the Module Firmware Product Integrated drivers CP 441 1 3964 R procedure ASCII driver printer driver CP 441 2 3964 R procedure ASCII driver RK512 computer link printer driver Applications for the Communication Processor The communication processor allows point to point link with SIMATIC modules and with third party products Point to point Link CP 441 Installation and Parameter Assignment 12 Manual 04 2012 A5E00405449 03
279. urce Fetch GET from to the destination Frame header Communica Partner your S7 PLC Byte 3 4 Byte 5 6 Byte 7 8 Command S DBNO D Offset Number in mode Data block Data block ED DB DW Words Flag Data block EM DB DW Bytes Inputs Data block El DB DW Bytes Outputs Data block EQ DB DW Bytes Counter Data block EC DB DW Words Timers Data block ET DB DW Words Abbreviations S DBNO Source data block number S Offset source start address DW Offset in words See also Properties PtP Connection dialog procedure with RK512 computer link Page 129 Overview of the System Function Blocks Page 138 Point to point Link CP 441 Installation and Parameter Assignment 174 Manual 04 2012 A5E00405449 03 Communication via System Function Blocks 6 5 Introduction 6 5 Using the System Function Blocks with the ASCII Driver Using the System Function Blocks with the ASCII Driver The same functions can be used for data transmission with the ASCII as with the 3964 R procedure In other words the information on the 3964 R procedure also applies to the ASCII driver In addition when the ASCII driver is used with the RS 232 interface module you can read and control the RS 232 accompanying signals The following describes only what you have to do to use these additional functions RS232 accompanying signals Function blocks are available to you for reading and controlling the RS 232 accompanying signals The table below co
280. ure Parameter Description Value range Default value Character delay The character delay time defines the permitted 20 ms to 65530 ms in 10 ms 220 ms time maximum interval between two incoming increments characters in a frame The shortest character delay time depends on the data transmission rate 300 bps 60 ms 600 bps 40 ms 1200 bps 30 ms 2400 to 20 ms 115200 bps Acknowledgement The acknowledgment delay time defines the 20 ms to 65530 ms in 10 ms 2000 ms delay time ADT maximum amount of time permitted for the partner s acknowledgment to arrive during connection setup time between STX and partner s DLE acknowledgment or release time between DLE ETX and partner s DLE increments The shortest acknowledgment delay time depends on the data transmission rate 550 ms with 3964 without block check acknowledgment 300 bps 60 ms 600 bps 40 ms 1200 bps 30 ms 2400 to 20 ms 115200 bps Connection This parameter defines the maximum number 1 to 255 6 attempts of attempts the CP 441 is allowed in order to establish a connection Transmission This parameter defines the maximum number 1 to 255 6 attempts of attempts to transfer a frame including the first one in the event of an error 76 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 8 Parameter Assignment Data of the Protoc
281. ure 2 13 Data traffic when sending with a response frame Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 49 Basic Principles of Serial Data Transmission 2 5 Data transmission with the RK512 computer link Sending data 50 The SEND PUT request is executed in the following sequence e Active partner Sends a SEND PUT frame This contains a frame header and data Passive partner Receives the frame checks the header and the data and acknowledges it with a response frame after passing the data on to the CPU e Active partner Receives the response frame If the volume of user data exceeds 128 bytes the active partner sends a continuation SEND PUT frame This contains byte 1 to 4 of the frame header Passive partner Receives the continuation SEND PUT frame checks the header and the data and acknowledges it with a continuation response frame after passing the data on to the CPU Note If the CPU receives an error SEND PUT frame or if an error has occurred in the frame header the communication partner enters an error number in the 4th byte of the response frame This does not apply when protocol errors occur Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 5 Data transmission with the RK512 computer link Continuation SEND PUT frames A continuation SEND PUT fram
282. without a block check character e data transmission without a block check character 3964 e data transmission with a block check character 3964R In this manual the designation 3964 R is used when descriptions and notes refer to both data transmission procedures Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Basic Principles of Serial Data Transmission 2 3 Transmission integrity Performance Limits with 3964R e Further processing of the send receive data by the PLC program in the communication partner is not guaranteed You can only ensure this by using a programmable acknowledgment mechanism e The block check of the 3964R procedure EXOR operation cannot detect missing zeros as a whole character because a zero in the EXOR operation does not affect the result of the calculation Although the loss of an entire character this character has to be a zero is highly unlikely it could possibly occur under very bad transmission conditions You can protect a transmission against such errors by sending the length of the data frame along with the data itself and having the length checked at the other end e Such transmission errors are ruled out when the RK512 computer link is used for data transmission because here unlike the 3964 R procedure further processing is acknowledged via response frames e g stored in the destination data block and the send data length is recorde
283. x RxD Ge wa i kog l i Receiver ZA l 2 20 mA RxD i10 Co i l i ale l l l l l l l l Shielding l i at l Cable type i i l Enclosure shield LIYCY 4x 0 14 l Enclosure shield Figure B 11 20 mA TTY cable CP 441 CP 521SI CP 521BASIC Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 245 Cables B 2 20mA TTY interface submodule 20mA TTY connecting cable S7 CP 441 CPU 944 AG 95 The figure below illustrates the cable for a point to point link between a CP 441 anda CPU 944 AG 95 You require the following male connectors for the cables e At CP 441 end 9 pin sub D male connector with screw locking e At the communication partner 15 pin subminiature D male connector with slide latch CP 441 Communication partner Peo oe ra ia i ae i N 3 20mA TxD _ 6 24V C ti T i l l 1 1 Sender l ee RXD TxD 7 Via l l l AS Receiver i pop i l 8 1 RxD i i pi i l 2 l 1 20mA T J i l l l 4 i 20 mA ri l 24v L el a l l 9 TxD bon i i T eol i I I i Ne Sender i are 1 TD RxD 9 l vey Voy l l i l l 1 I Receiver ra l 2 20mA RxD 2 l C l 1 ap oy i I l l Cable shield l I ji l E l e Cable type Io l l Enclosure shield LIYCY 4x 0 14 l Enclosure shield Figure B 12 20mA TTY Connecting Cable CP 441 CPU
284. y been transferred from the receive buffer of the communication module and prepared for transmission to the CPU 2 6 3 RS485 mode Introduction When you run the ASCII driver in RS485 mode half duplex two wire mode you must take steps in the user program to ensure that only one user sends data at any one time If two users send data simultaneously the frame is corrupted Switch over Times for RS485 Module in Half Duplex Mode The maximum switch over time between sending and receiving is 1 ms This value is applicable to modules as of order number 6ES7 441 xAA03 0AE0 x 1 2 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 67 Basic Principles of Serial Data Transmission 2 6 Data Transmission with the ASCII Driver 2 6 4 RS232 mode RS232 accompanying signals The following RS232C accompanying signals are available on the CP 441 with the use of the RS232 interface module e DCD Input Data carrier detect e DTR Output Data terminal ready CP 441 ready to receive e DSR Input Data set ready communication partner ready for operation e RTS Output Request to send CP 441 ready to send e CTS Input Clear to send communication partner can receive data from the CP 441 response to RTS ON of the CP 441 e RI Input Ring indicator When the CP 441 is switched on the output signals are in the OFF state inactive You can configure the use of the DTR DSR and RTS
285. y calculated value of BCC does not match for malfunction at partner device possibly by using BCC received by partner at end of connection interface test device switched into the transmission line 08 0AH There is no free receive buffer available The function block for receiving must be called After receipt of STX there was no empty receive buffer available to the procedure at connection setup and after an additional waiting time more frequently in the user program Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 205 Diagnostics Functions of the CP 441 8 3 Diagnostics via the error signaling area SYSTAT Event Class 8 08H Receive error Event no Event Text To correct or avoid errors 08 0CH Transmission error Faults on the transmission line cause frame Transmission error parity error stop bit error repetitions thus lowering user data throughput overflow error detected Danger of an undetected error increases Change If faulty character is received in idle mode the error YOE Syer 26008 K Tenne routing OER is reported immediately so that disturbances on the Check that the settings for data transmission rate transmission line can be detected early parity and number of stop bits are the same on both devices Only for RK512 and 3964 R Aa If this occurs during send or receive operation repetitions are initiated 08 0DH BREAK Set u
286. y downloading firmware updates to system memory of communication processor You have the following options to update the firmware e Loading firmware in TIA Portal e Loading firmware in HW Config e Loading firmware using the parameter assignment interface of the CP 441 Basic Firmware The CP 441 is shipped with basic firmware preinstalled Requirements The requirements for loading firmware updates are e STEP 7 TIA Portal as of V11 or e STEP 7 as of V4 02 or e CP 441 Configuration Package for Point to Point Communication as of V5 0 You must create a valid project under the hardware configuration and upload it to the CPU before you can update the firmware of the communication processor with the parameter assignment interface The instructions accompanying the firmware update always detail the destination directories for the files The CP441 nnn path always identifies the firmware version Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 133 Configuring and Assigning Parameters for the CP 441 5 8 Firmware Updates Loading firmware in STEP 7 V11 TIA Portal Follow the steps below 1 Open the module in the online and diagnostic view 2 Select the group Firmware update in the Functions folder 3 Click the Browse button in the Firmware update area to select the path to the firmware update files 4 Select one of these files The table lists all modules for
287. y time river and printer driver only The waiting e communication partner has a fault is too slow 07 08H ASCII Dri d printer dri ly Th iti Th icati rtner h fault is t l time for XON or CTS ON has expired or is switched off line Check the communication partner or if necessary change the parameters 204 Point to point Link CP 441 Installation and Parameter Assignment Manual 04 2012 A5E00405449 03 Diagnostics Functions of the CP 441 8 3 Diagnostics via the error signaling area SYSTAT Event Class 7 07H Send error Event no Event Text To correct or avoid errors 07 09H Connection setup not possible Number of permitted Check the interface cable or the transmission connection attempts exceeded parameters 07 0AH The data could not be transmitted The permitted Check the interface cable or the transmission number of transfer attempts was exceeded parameters Event Class 8 08H Receive error Event no Event Text To correct or avoid errors 08 01H Expecting the first repetition A repetition is not an error however it can be an An error was recognized on receiving a frame and indication that there are disturbances on the the CP requested repetition from the partner via a transmission line or a malfunction of the partner negative acknowledgment NAK device If the frame still has not been transmitted after the maximum number of repeti

Point-to-point Link CP 441 Installation and

Contents

Download Pdf Manuals

Related Search

Related Contents