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PFB366 Profibus-DP Gateway User Manual

1. 82 lt PROFIBUS OUTPUT BYTES 1 Transmit Data received from Profibus master PROFIBUS OUTPUT BYTES TT 00000001 RA 0x52 TT Transmit Toggle byte bit 0 toggled 0 1 RA Receive Acknowledge byte bit 0 0 52 Transmit Data 2 Serial Transmit Processconverts data to ASCII Data Type SINT Width 2 Conversion D 0x52 0x52 hex gt 82 decimal gt 82 or 0x38 0x32 0x38 0x32 3 Builds message amp loads into transmit buffer String 0x09 0x02 SET T 7 0x02 0x53 0x45 0x54 0x20 0x54 0x20 Ox3D 0x20 0x38 0x32 20 0x43 OxOD 0x03 Data 82 String2 0x04 0x0D 0x03 4 Gateway transmits message Serial Data Stream hex bytes 0x02 0x53 0x45 0x54 0x20 0x54 0x20 0x3D 0x20 0x38 0x32 0x20 0x43 OxOD 0x03 Serial Data Stream ASCII ST S T SP T SP SP 8 2 SP C CR lt gt MKS Instruments Inc D I P Products Group 19 PFB366 User Manual revision 1 20 Synchronization There are four independent processes operating in a PFB366 gateway application The first process is the exchange of input and output data between the user application program and the Profibus master The second process is the exchange of input and output data between the gateway and Profibus master using read and write over Profibus The third process is receiving serial messages
2. MKS Instruments Inc D I P Products Group 31 PFB366 User Manual revision 1 20 Chapter 5 Configuration Examples This chapter contains four gateway configuration examples Example 1 Receiving Data Read UPC labels into a PLC using a serial barcode scanner a PFB366 gateway and a Profibus master The barcode scanner RS232 channel is connected to a PFB366 serial channel The PFB366 Profibus channel is connected to the PLC Profibus master Barcode Scanner PLC amp Profibus Master lt PFB366 Gateway UPC labels RS232 Profibus network Barcode Scanner The barcode scanner s RS232 channel is set for 9600 bps 8 data bits no parity and 1 stop bit When it reads a UPC label it transmits the following ASCII message format The message always begins with the ASCII STX start of text 0x02 character and always ends with the ASCII ETX end of text 0x03 and CR carriage return 0x0D characters The barcode data will consist of a variable number of 1 to 12 ASCII characters depending upon the UPC label being scanned STX ASCII barcode data ETX PFB366 Gateway The PFB366 gateway needs to be configured to receive this RS232 message format The first step is to determine the Delimiter Mode The barcode scanner transmits a variable length message packet so Length Mode cannot be used Timeout Mode may be used but without specific timing information for the barcode scanner s R
3. stored address 5 0 to F 80 to 95 D 0 to F stored address 6 0 to F 96 to 111 E 0 to F stored address 7 0 toD 112 to 125 F 0 to F stored address 7 E F stored address Power Up Gateway Connect the gateway to a Profibus network and apply power to the gateway Gateway Status LEDs The PFB366 gateway has two bi color status LEDs NET and MOD that indicate operational status During power up the LEDs cycle through a sequence of alternating red and green After power up the NET and MOD LEDs will be solid green if the slave has recognized the Profibus baud rate and entered its data exchange mode If this does not occur power down and verify all the switch settings or proceed to download the database of PFB366 parameters MKS Instruments Inc D I P Products Group 22 PFB366 User Manual revision 1 20 State Profibus Status LED NET Off Wait Parameter Configuration State Flashing Red Not Used Solid Red Not Used Flashing Green Wait Parameter Configuration State Solid Green Data Exchange Normal runtime operation State Module Status LED MOD Off No power Flashing Red Not Used Solid Red Baud Search State Auto baud for Profibus baud rate Flashing Green Not Used Solid Green Baud Rate Found Normal Operation Serial Channel Status LEDs The gateway has two bi color LEDs to indicate serial channel activity The LED flashes green when a packet is being transmitted T
4. Verify Gateway Node Address is set from rotary switches or retentive memory Make sure Gateway Node Address is not used by another device After setting Gateway Node Address Profibus Master does not recognize Gateway Disconnect Gateway from network before changing Node Address Make sure Gateway NODE ADDRESS is not used by another device Verify Gateway NODE ADDRESS is set from rotary switches or retentive memory value Verify gateway supports Profibus baud rate NET LED is off or flashing green Gateway is in Wait Parameter Configuration State Download PFB366 parameters using Profibus Configuration Tool MOD LED is off Gateway is not powered Check power supply and cable connection MOD LED is solid red Gateway is searching for Profibus baud rate Make sure Profibus netword is configured to baud rate supported by gateway RX LED does not flash green when data 1s sent to the Gateway If Sync Enabled make sure Receive Toggle and Receive Acknowledge bits are being toggled If application does not toggle Receive Acknowledge Gateway will not receive data Verify source device is transmitting data to Gateway RX LED is solid red after Gateway receives data Check extended diagnostics byte for RX buffer Overflow or parity Error Reset gateway to clear errors Make sure parity is set to match transmitting device TX LED is solid red after receiving data from Profibus Master Check extended d
5. Error 1 Error 1 Serial Receive FIFO Overrun buffer filled beyond maximum capability Error 2 Serial Receive Parity Error Error 3 Serial Transmit FIFO overrun buffer filled beyond maximum capability MKS Instruments Inc D I P Products Group 40 PFB366 User Manual revision 1 20 Appendix A Product Specifications Profibus Interface Isolation Reverse Polarity Signal Levels Supported Baud Rates Serial Channel Power Requirements ESD Protection Overload Protection Short Circuit RS232 Output Levels Environmental Operating Temperature Storage Temperature Size inches Mounting inches PCB Encapsulation MKS Instruments Inc 500 Volts 30 Vdc RS485 9600 19 2K 93 75K 187 5K 500K 1 5M 3M auto baud 11 28 Vdc 50 mA 10 30 Volts Indefinite 7 9 Volts unloaded typical 0 C to 70 C 25 C to 85 C 3 25 x 2 37 x 1 08 0 5 tabs 3 16 diameter mounting holes RTV Silicon Compound D I P Products Group 41 PFB366 User Manual revision 1 20 Appendix B Profibus Parameter Template Default Setting MKS Instruments Inc D I P Products Group 42 PFB366 User Manual revision 1 20 Appendix ASCII Character Codes BE ee 71 Null Start of heading Start of text End of text End of transmit Enquiry Acknowledge Bell Backspace Horizontal tab Line feed Vertical tab Form feed Carriage return
6. even parity and 2 stop bits It uses XON XOFF software flow control PFB366 Gateway The PFB366 gateway is configured to transmit this RS232 message format The Serial Stream Process parameters are shown below for this application The 3rd column lists the parameter group device number value Serial Stream Process Configuration Parameter Group 64 Device 1 Parameter Data Parameter Group Device Number Value Description 3 Baud Rate 300 0x40 0x01 0x03 0x01 0x2C 300 bps 4 Data Bits 7 0x40 0x01 0x04 0x07 7 data bits 5 Parity 2 0x40 0x01 0x05 0x02 Even parity 6 Stop Bits 2 0x40 0x01 0x06 0x02 2 stop bit 7 Flow Control 1 0x40 0x01 0x07 0x01 XON XOFF The next step is to configure the PFB366 gateway to transmit the specific message Serial Transmit Process is configured to transmit the message It receives an integer value from the Profibus master converts it to 3 ASCII characters builds a message packet and transmits it The Transmit Mode is Use String Before Data Use Data and Use String2 After Data String is TEMP String2 15 C The Data is INT to cover the 50 to 400 range The Width is 3 and the Conversion is set for decimal with no leading zeros Serial Transmit Process Configuration Parameter Group 66 Device 1 Parameter Data Parameter Group Device Number Value Description 6 Transmit Mode 19 0x42 0x01 0x06 0x13 Use Data String Before String2 After 7 Stringl 0x07 TEMP 0x42 0x
7. 255 byte transmit and receive FIFO buffers Powered by wide range 11 28VDC external power supply Loss of ground protection circuitry 4 bi color status LEDs Encapsulated circuit board in compact industrial case Chapter 2 Installation PFB366 revision 1 20 This chapter describes how to install and connect the PFB366 gateway to a Profibus DP network and your serial device Mounting Mount on a horizontal or vertical surface While the RTV encapsulation protects its circuitry the PFB366 DB9 connector is not rated for NEMA4 IP65 environments Mount the gateway in a suitable location or enclosure for your application The gateway will generate up to 1 4W of heat so provide sufficient clearance and airflow to maintain 0 C to 70 C operating temperature range Use two screws not provided in the 0 19 inch mounting holes shown below to fasten the PFB366 to the mounting surface MKS Instruments Inc Products Group PFB366 User Manual revision 1 20 All dimensions are inches i Holes 2 0 19 DIA i 0 625 DIA On Case Wall i Wiring The PFB366 requires two connections one to the Profibus DP network female DB9 connector and one to the target serial device male DB9 connector Follow all applicable electrical codes in your area when mounting and wiring any electrical device All power is received from an extern
8. Bytes Transmit Data Bytes 01010101010 RA Bit 0 Received Acknowledge bit 0100101010 0 TT Transmit Toggle bit The first 2 input data bytes sent from the gateway contain synchronization bits for the gateway transmit and receive operations The remaining input data bytes contain serial message data that has been received and processed by the gateway Tx Synchronization Bytes Rx Bytes Receive Data Bytes 01010 10 10 10 10 Bit 0 Received Toggle bit 0101010101010 Bito Transmit Acknowledge bit MKS Instruments Inc D I P Products Group 10 PFB366 User Manual revision 1 20 Serial Channel Interface The PFB366 serial channel consists of an asynchronous serial transmitter and receiver The serial interface is configured and controlled by the Serial Stream Process parameters Serial Receive Process parameters and Serial Transmit Process parameters Serial Stream Process The Serial Stream Process parameters configure the serial channel s baud rate number of data bits and stop bits parity and flow control This configuration applies to both the serial transmitter and receiver The gateway has separate 255 byte serial transmit and receive FIFO buffers allowing full duplex operation when supported by the physical layer media The Serial Str
9. EXAMPLE 2 RECEIVING DELIMITED nr nre rn nnn 35 MM 35 35 EXAMPLE 3 TRANSMITIING DATA inisee n Taea i Ea E 37 VINCI ANENA A EAE E AEN A ESE N T N ETEN 37 DPE BS OO Gateway i o oeste eee EEE redd 37 EXAMPLE 4 TRANSMITTING DELIMITED DATA 2 cccccceesseceessececeeceececseceeceessaeeecesaeeecueeeceesaeeecseaeesecsueeeceesaeeseseaaees 39 SOFIQLUPEIBIOE A AEAT E ica iut tuos siete eh letra dante 39 PEB306 Gale WV oto cba N ede code t estes 39 CHAPTER 6 TROUBLESHOOTING 40 MKS Instruments Inc Products Group 2 PFB366 User Manual revision 1 20 APPENDIX PRODUCT SPECIFICATIONS cscsssssscssssssscresccccsssscsnececcesscsssssenscesssssscssececesesssssscenscsseees 42 PROFIBUS MINTER FACE t ee e a ee et e ER 42 tri teret tt deer aret eu poer doe RR Pe Peer eee Te o eee rea 42 EXTERNAL POWER SUPP IEY te te ee eet batte o eei te e Rta ree essetis 42 ENVIRONMENTA Dee ar 42 APPENDIX B PARAMETER TEMPLATE sccccccscsssssscsscccssssssseneccccssscssceecescccssscceecsccsssssssssecscesssssssssenecees 43 APPEN
10. Shift out Shift in Data line escape Device control 1 Device control 2 Device control 3 Device control 4 Negative acknowledge Synchronous idle End of transmit block Cancel End of medium Substitute Escape File separator Group separator Record separator Unit separator Oo N Xxs caomovuozzr eac rommoourd g lt MKS Instruments Inc D LP Products Group 43
11. bits 5 Parity 0 0x40 0x01 0x05 0x00 no parity 6 Stop Bits 1 0x40 0x01 0x06 0x01 1 stop bit 7 Flow Control 2 0x40 0x01 0x07 0x02 CTS RTS 10 Delimiter Mode 1 0x40 0x01 0xOA 0x01 List Mode 11 Pre Delimiter String 0x01 0x02 0x40 0x01 0x0B 0x01 0x02 Short_String length 1 STX 12 Post Delimiter String 0x02 0x03 0x0D 0x40 0x01 0x0C 0x02 0x03 0x0D Short_String length 2 ETX CR The next step is to configure the PFB366 gateway to process the label formats and convert the ASCII characters into integer numbers to be returned as a Profibus input Serial Receive Process is configured to process 11 character model number UPC label message packet The Receive Mode is set to Use Pre String Use Data and Use Post String fields The Pre String parameter is set to MODEL and Post String is set to A space and character These two strings are used to filter for model number message packet The model number range is 1 to 100 so the Data Type 1s set for USINT with a Width of 3 and Conversion is set to decimal The Data Size is 1 byte for USINT MKS Instruments Inc D I P Products Group 34 PFB366 User Manual revision 1 20 Serial Receive Process Parameter Configuration Parameter Group 65 Device 1 Parameter Data Parameter Group Device Number Value Description 6 Receive Mode 7 0 41 0 01 0 06 0 07 use Data Pre String Post String fields 7 Pre String 0x06 MODEL 0x41 0x01 0x07 0x06 0x4D Ox4F 0x44 0x45
12. bits no parity and 1 stop bit When it reads a UPC label it transmits the following ASCII message format The message always begins with the ASCII STX start of text 0x02 character and always ends with the ASCII ETX end of text 0x03 and CR carriage return 0x0D characters The barcode data will consist of a variable number of ASCII characters depending upon the UPC label being scanned STX MODEL xxx A ETX 14 bytes ASCII data PFB366 Gateway The PFB366 gateway needs to be configured to receive this RS232 message format The first step is to determine the Delimiter Mode The barcode scanner still transmits a variable length message so Length Mode cannot be used Timeout Mode may be used but without specific timing information for the barcode scanner s RS232 channel it may be difficult to derive a suitable Packet Timeout value List Mode is best suited for this application because the serial message always begins and ends with the same characters The Serial Stream Process can now be configured The following shows the Serial Stream Process parameter settings for this application The 3rd column lists the parameter group device number value The last two parameters are Short String data types Serial Stream Process Configuration Parameter Group 64 Device 1 Parameter Data Parameter Group Device Number Value Description 3 Baud Rate 9600 0x40 0x01 0x03 0x25 0x80 9600 bps 4 Data Bits 8 0x40 0x01 0x04 0x08 8 data
13. or hex column to select the desired data type Data Size column defines the number of data bytes for Transmit Data For Short_String set Data Size parameter to the desired number of data bytes plus 1 length byte Set the Width parameter to the expected number of ASCII bytes to be converted into a real or integer number Set the Precision parameter to the desired number of digits after the decimal point in a real number Data Size Required for Short_String Data Type Defines the maximum number of bytes in a Short String plus one length byte 2 26 The first byte in a Short_ String defines the string length The Data Size parameters for Serial Receive Process and Serial Transmit Process must sum to a total less than or equal to 64 bytes regardless of whether the process is being used Set unused process Data Type parameters to USINT or SINT which have a 1 byte Data Size Width Required for SINT INT USINT UINT REAL Data Types Defines the number of ASCII bytes 1 16 that will represent the integer or real number Precision Required for REAL Data Type Defines the number of digits 0 to 6 after the real number decimal point Gateway adds trailing zeros to the converted value if needed Conversion Selects Leading Zeros and Hex or Decimal representation The following are valid options for the Conversion byte decimal hex description 0 0 0 0x00 no leading zeros decimal integer 0 1 1 0x01 no leading z
14. packet allowing you to build and transmit complex messages The following examples show how the Transmit Serial Process can be configured to convert a data value into a message packet Parameter Message Packet 1 Output Data Bytes 2 Output Data Byte 3 Output Data Bytes 0x03 0x41 0x42 0x43 OxFF 0x47 Short_ String data size 4 USINT integer data size 1 INT integer data size 2 Use Data Field width 1 conversion D width 4 conversion D 0x41 0x42 0x43 ABC Use Data Field Use String Before 0x06 VAL 0x08 gt 8 0x38 Use Data Field Use String2 After 0x02 F Transmitted Message Packet Transmitted Message Packet OxFF 0x47 185 gt 185 Transmitted Message Packet VAL 185 MKS Instruments Inc D I P Products Group 13 PFB366 User Manual revision 1 20 Asynchronous Serial Communictaion Devices communicating on an asynchronous serial link exchange information one bit at a time Each bit is transmitted for a specific period of time defined by the baud rate Devices use internal timing circuitry to measure the baud rate There is no clocking signal between devices to synchronize the serial data flow hence the term asynchronous serial communications Serial data bits are organized into bytes When a data byte is asynchronously transmitted it is preceded by a start bit followed by the data bits an optional parity bit and one or more stop bits There
15. used not used The Conversion parameter is different for Serial Receive Process and Serial Transmit Process For the Serial Receive Process the Conversion parameter denotes if the ASCII bytes represent a decimal integer or a hexadecimal integer If decimal is selected then the gateway converts the ASCII bytes as a decimal number If hexadecimal is selected then the gateway converts the ASCII bytes as a hex number 1234 gt If decimal integer 1234 1234 gt Ifhexadecimal 0x1234 integer 4660 For the Serial Transmit Process the Conversion parameter also denotes if the ASCII bytes represent a decimal or hexadecimal integer If decimal is selected then the gateway converts the integer into a decimal ASCII representation If hexadecimal is selected then the gateway converts the integer into a hex ASCII representation Integer 1234 gt If decimal ASCII representation 1234 Integer 1234 gt If hexadecimal ASCII representation 0402 MKS Instruments Inc D I P Products Group 15 PFB366 User Manual revision 1 20 The Serial Transmit Process Conversion parameter can also be used to insert leading zeros into a converted number If the ASCII representation of a number contains fewer characters than the selected Width then leading zeros can added in front of the number Integer 1234 Width 7 gt Ifleading zeros enabled ASCII representation 0001234 Integer 1234 Width 7 gt If leading zeros
16. 01 0x07 0x07 0x54 0x45 0x4D 0x50 Short String length 7 TEMP 0x20 0x3D 0x20 8 String2 0 04 CR LF 0x42 0x01 0x08 0x04 0x20 0x43 OxOD 0x0A Short String length 4 CR LF 9 Data Type 195 0x42 0x01 0x09 0xC3 INT 16 bit signed integer 11 Width 3 0x42 0x01 0x0B 0x03 convert to 3 ASCII bytes 13 Conversion 1 0x42 0x01 0x0D 0x01 represent integer in decimal The gateway expects to receive 3 output bytes from the Profibus master with the data organized as follows TX Toggle bit 0 RX Acknowledge bit 0 Transmit Data UINT 1 byte 1 byte 1 byte Transmit synchronization must be used The application toggles the Transmit Toggle bit when it sends new temperature values and monitors Transmit Acknowledge bit to tell when the message has been sent MKS Instruments Inc D I P Products Group 38 PFB366 User Manual revision 1 20 Chapter 6 Troubleshooting Problem Possible Cause Profibus Configuration Program does not recognize Gateway Register Gateway GSD file with Configuration Program Profibus Configuration Program does not recognize Gateway after loading GSD file Check Major and Minor Revisions for Gateway and GSD file to see if you have correct GSD file for your Gateway s firmware version Gateway does not appear on Profibus network Check wiring and cable connections Check gateway power supply voltage Make sure Gateway baud rate matches network baud rate
17. Chapter 4 Gateway Configuration This chapter describes how to configure and operate the PFB366 gateway You configure the gateway by reading and writing parameter values over its Profibus interface There are a variety of Profibus configuration tools available You can configure the gateway using the user interface defined in the gateway s GSD file Configure Profibus Interface Set the Profibus Address using the rotary switches Configure switches before connecting to the Profibus network There is either a small triangular indicator or white indicator on the switch Use a small screwdriver to align that indicator with the desired setting Remove the PFB366 cover if necessary to access the rotary switches Node Address Switches The two Node Address switches represent decimal numbers from 0x00 to OxFF The LSB switch selects the lower 4 bits lower nibble and the MSB switch selects the upper 4 bits upper nibble of the 8 bit hexadecimal address Valid Node Addresses are 0x00 to 0x7D 0 125 Setting a Node Address greater than 0x7D forces the gateway to use the Node Address saved in retentive memory from previous power cycle A valid Node Address must first be saved in the gateway before this feature can be used MSB LSB Address MSB LSB Address 0 0 to F 00 to 15 8 0 to F stored address 1 0 to F 16 to 31 9 0 to F stored address 2 0 to F 32 to 47 A 0 to F stored address 3 0 to F 48 to 63 B 0 to F stored address 4 0 to F 64 to 79
18. DIX C ASCII CHARACTER CODES ccccccssssssscscccsscssssscccccssscssonscescesscsssonececcesscsssenscescesscsssonscsccssos 44 MKS Instruments Inc D I P Products Group 3 PFB366 User Manual revision 1 20 Chapter 1 Overview This document describes how to install configure and operate the PFB366 Profibus DP serial gateway The following products are covered in this user manual Part Number Serial Channel PFB366 RS232 full duplex The PFB366 gateways allow you to easily interface a wide variety of serial devices to any Profibus DP industrial control network Each gateway contains the feature packed D I P gateway core Standard PFB366 products are tightly packaged and sealed in a rugged industrial case Board level and customized gateways are also available upon request RS232 Serial Channel we maie DB9 connector Serial Status LEDs RX TX Profibus Address TIED Mounting Holes Switches Profibus DP Status LEDs 7 NET MOD Isolated Profibus DP Channel female DB9 connector MKS Instruments Inc D L P Products Group 4 PFB366 User Manual Product Features Fully isolated Profibus channel 9600 19 2K 93 75K 187 5K 1 5M 3M bps Profibus data rates auto baud 2 rotary Hex ID switches for Profibus address RS232 serial channel with RTS CTS flow control XON XOFF software flow control 300 1200 2400 4800 9600 19200 bps serial data rates Configurable data bits stop bits parity
19. Data Size Required for Short String Data Type Defines the maximum number of bytes in a Short String plus one length byte 2 26 The first byte in a Short String defines the string length The Data Size parameter for Serial Receive Process and Serial Transmit Process must sum to a total less than or equal to 64 bytes regardless of whether the process is being used Set unused process s Data Type parameter to USINT or SINT which have 1 byte Data Size Width Required for SINT INT USINT UINT REAL Data Types Defines the number of ASCII bytes 1 16 to be converted into an integer or real number Conversion Required for SINT INT USINT UINT Data Types Denotes if the ASCII bytes represent a decimal integer D or 0x44 or a hexadecimal integer or 0x58 Pad Char Byte value to pad the RX Message bytes Sync Enabled Enables receive synchronization with the user application When enabled the gateway will not update its Receive Data until the Receive Acknowledge bit matches the Receive Toggle bit Enabling receive synchronization ensures that the user application does not miss any received message data between polls MKS Instruments Inc D I P Products Group 27 PFB366 User Manual revision 1 20 Serial Transmit Process Settings This section describes how to configure the Serial Transmit Process Serial Transmit Process Parameters Parameter Group 66 Parameter Device 1 Data Type Transmit Mode USIN
20. PFB366 Profibus DP Gateway User Manual PFB366 1 isolated RS232 channel PFB366 User Manual revision 1 20 Table of Contents CHAPTER 1 OVERVIEW e reor ee esee eee eae a eee anne n ud arae av n o pe oou aao ano ao se ouesvobedesscetegstestocssceveseessssbeesessvelesscees 4 CHAPTER 2 INSTALLATION oe aeo gano oe Uus cece 5 MOUNTING WIRING seni e 6 ProfibuszDP Interface o te e lg e les rettet 7 Serial CHANNEL Interfaces 3 iib deg tienne etie ee e gti te eet 7 Wiring Examples zo iet iva dest deter e Pepe ete eite eut CHAPTER 3 THEORY OF OPERATION ccccscscssssscscscscsesesessseseseseseseseseseseseseseseseseseseseseseseseseseseseseseseseseseses 9 GATEWAY OPERATION 9 Profibus Interfaces ie ion ete eae qa ue te ree la eo RO 9 Serial Channel Interface ede pte ee LIO RT de prse a E ipie dere 11 Serial Stream Process dedo berg e ror Ts Serial Receive Process Serial Transmit Process Asynchronous Serial Communictaion esses eee eee 14 A Serial Receive Example Serial Transmit Synchronization Rece
21. S232 channel it may be difficult to derive a suitable Packet Timeout value List Mode is best suited for this application because the serial message always begins and ends with the same characters The Serial Stream Process can now be configured The following shows the Serial Stream Process parameter settings for this application The 3rd column lists the parameter group device number value The last two parameters are Short_String data types Serial Stream Process Configuration Parameter Group 64 Device 1 Parameter Data Parameter Group Device Number Value Description 3 Baud Rate 9600 0x40 0x01 0x03 0x25 0x80 9600 bps 4 Data Bits 8 0x40 0x01 0x04 0x08 8 data bits 5 Parity 0 0x40 0x01 0x05 0x00 no parity 6 Stop Bits 1 0x40 0x01 0x06 0x01 1 stop bit 7 Flow Control 2 0x40 0x01 0x07 0x02 CTS RTS 10 Delimiter Mode 1 0x40 0x01 0xOA 0x01 List Mode 11 Pre Delimiter String 0x01 0x02 0x40 0x01 0x0B 0x01 0x02 Short_String length 1 STX 12 Post Delimiter String 0x02 0x03 0x0D 0x40 0x01 0x0C 0x02 0x03 0x0D Short_String length 2 ETX CR MKS Instruments Inc D I P Products Group 32 PFB366 User Manual revision 1 20 The next step is to configure the PFB366 gateway to return the ASCII barcode data to the Profibus master Because the content of the ASCII bytes is not known the entire byte string will be converted into a Short_String data type The Data Type is Short_String with a Data Size of 13 maximum number of expected barcode
22. Short String length 6 MODEL 0 4 0x20 8 Post String 0x02 A 0x41 0x01 0x08 0x02 0x20 0x41 Short_String length 2 A 9 Data Type 198 0x41 0x01 0x09 0xC6 USINT 8 bit unsigned integer 11 Width 3 0x41 0x01 0x0B 0x03 3 ASCII bytes to be converted 13 Conversion D 0x41 0x01 0x0D 0x44 ASCII bytes represent decimal number Note The post string consists of a space character and character A The gateway returns 3 input bytes to the Profibus master The data is organized as follows Transmit Acknowledge bits Receive Toggle bits Receive Data USINT 1 byte 1 byte 1 byte The gateway is now configured to receive the barcode message packets convert the embedded number into either an 8 bit unsigned integer number and return it as Profibus input byte Receive synchronization may also be used by enabling the Sync Enabled parameter MKS Instruments Inc D I P Products Group 35 PFB366 User Manual revision 1 20 Example 3 Transmitting Data Print an ASCII string from a PLC to a serial printer using a PFB366 gateway and a Profibus master The text message string can be from 1 to 25 characters long including any ASCII control characters The serial printer RS232 channel is connected to a PFB366 serial channel The PFB366 Profibus channel is connected to the PLC Profibus master PLC amp Profibus Master PFB366 Serial Printer Gateway Serial Printer The serial printer s RS232 channel is
23. T Bit 0 use Data Bit 1 use Stringl before data Bit 2 use String2 before data Bit 3 use Stringl after data Bit 4 use String2 after data Short String Sting of 1 9 bytes e Shon String String of I 9 bytes Data Type USINT 194 0xC2 SINT 1 byte 195 0xC3 INT 2 bytes 198 0xC6 USINT 1 byte 199 0xC7 UINT 2 bytes 202 0xCA REAL 4 bytes 218 0xDA Short String Data Size bytes puse gp USINT USINT 13 USINT Bit 0 0 for decimal 1 for hex Bit 7 use leading zeros to pad number Transmit Mode Defines the message packet structure to be transmitted The message packet can consist of 5 fields String Before String2 Before Data String After and String2 After Set associated bits 0 1 2 3 4 to enable the desired fields Set the remaining bits 5 7 to zero String Before String2 Before Data String After String2 After String parameter defines byte string for String Before and String After fields Data Size parameter defines the number of bytes expected in the Data field String2 parameter defines the byte string for the String2 Before and String2 After fields While the Data field is typically selected you can configure the gateway to transmit a predefined message using String and or String2 without requiring any output data bytes from the Profibus master When String Before and or String2 Before bi
24. The Serial Receive Process can be configured to search for Pre String and or Post String byte strings at the beginning and or end of the desired data bytes The data bytes framed by the Pre String and Post String bytes are then converted into a Short_String integer or real number The following examples show how the Serial Receive Process can be configured to process a Message Packet Received Message Packet Message Packet Bytes VALUE 100 F 1 Short_String 2 Short_String 3 Short_String 4 Integer USINT data size 14 data size 5 data size 4 data size 1 Use Data Field Use Data Field Use Pre String Use Pre String Use Data Field Use Data Field Use Post String Use Post String 13 VALUE 100 4 VALU 8 VALUE 3 100 8 VALUE MKS Instruments Inc D I P Products Group 12 PFB366 User Manual revision 1 20 Serial Transmit Process The Serial Transmit Process receives an output data value from the Profibus master It converts the output data into a serial message packet to transmit out the serial channel The output data format can be a Short String byte array with 1 byte length a signed or unsigned integer or real number data type An integer or real number can be converted into ASCII characters that represent the numerical value before it is transmitted String and String2 character strings can be placed before and or after the converted data in the message
25. a is 25 The Serial Receive Process Parameter converts this to 2 bytes of Receive Data OxE7 The ASCII 25 decimal number converts to OxFFE7 Example 6 Data Type REAL Width 13 Received ASCII data is 1 2345E 16 The Serial Receive Process Parameter converts this to 4 bytes of Receive Data OxNN OxNN OxNN OxNN This is the 32 bit floating point representation for 1 2345E 16 Example 7 Data Type REAL Width 7 Received ASCII data is 1 2345E 16 The Serial Receive Process Parameter converts this to 4 bytes of Receive Data OxNN OxNN OxNN OxNN This is the 32 bit floating point representation for 1 2345 With Width 7 only the first 7 ASCII bytes are converted Example 8 Data Type Short String Data Size 8 Transmit Data 1 0x08 0x31 0x32 0x33 0x34 0x35 0x36 0x37 0x38 The Serial Transmit Process Parameter converts this into 8 ASCII bytes 12345678 Note the first Transmit Data byte defines the Short String length in bytes This length byte is not transmitted Example 9 Data Type SINT Width 5 Conversion Hex Leading Zeros Transmit Data 15 0x18 The Serial Transmit Process Parameter converts this into 5 ASCII bytes 00018 Leading zeros are added to match the Width 5 Example 10 Data Type INT Width 6 Conversion Decimal No Leading Zeros Transmit Data 1 OxFF OxE7 The Serial Transmit Process Parameter
26. al 11 28VDC power supply connected to the serial channel DB9 connector The PFB366 draws up to 50mA from the power supply Select your serial and Profibus DP cables and power supply so that it can provide sufficient current for all networked devices at their peak operating power MKS Instruments Inc Products Group 6 PFB366 User Manual Profibus DP Interface revision 1 20 Female DB9 Profibus Connector O00O0O 9 8 7 6 PIN SIGNAL DESCRIPTION 1 NC No Connect Do not connect any wires to NC pins 2 NC No Connect 3 B Non Inverting input output communication signal from Profibus 4 RTS Profibus DP Request To Send output signal repeater control 5 GND Isolated ground 6 5VDC Isolated 5 supply 7 NC No Connect 8 A Inverting input output communication signal from Profibus 9 NC No Connect Serial Channel Interface Male DB9 Serial Connector 12345 2 0 E 6 7 8 9 PIN SIGNAL DESCRIPTION 1 NC No Connect Do not connect any wires to NC pins 2 RXD Receive Data RS232 input signal 3 TXD Transmit Data RS232 output signal 4 NC No Connect 5 GND Ground Common for RS232 signals 6 NC No Connect 7 RTS Request To Send RS232 output signal 8 CTS Clear To Send RS232 input signal 9 NC No Connect MKS Instruments Inc Products Group 7 PFB366 User Manual revision 1 20 Wiring Examples The following are typical PFB366 gateway wiring configurations Your RS232
27. and converting it to input data The fourth process is converting output data and transmitting it as serial messages To ensure that no information is lost between the gateway s serial channel and the user application program the PFB366 incorporates a receive synchronization feature and a transmit synchronization feature I O Exchange between I O Exchange between Profibus Master and PFB366 gateway and Application Profibus Master Convert serial message into Input Data Invut A ecrit Inputs input data Receive E err Message Packet Convert Output Data Outputs into serial message Output File Eae C output data Transmit LL cd Message Packet Profibus Serial Device Master Application Program PFB366 Gateway Profibus network Receive Synchronization The gateway receive synchronization feature is optional for Serial Receive Process It is enabled by the Sync Enable parameter When enabled the gateway will not process a new message packet until the last Receive Data value has been read and acknowledged by the application program When a Serial Receive Process updates its Receive Data value it also toggles its Receive Toggle bit to indicate a new data value is available The user application monitors the Receive Toggle bit and reads the Receive Data value when the bit changes state Once the application has read and processed or stored the new Receive Data value it a
28. can be a variable transmission delay between successive serial data bytes since each byte is framed by its own start and stop bits The receiver starts saving serial bits after is receives a valid start bit 0 and stops when it receives the expected number of stop bits 1 The data byte s least significant bit is transmitted first data bit 0 and the most signficant bit is transmitted last data bit N start bit data bit O data bit 1 1 data bit optional parity bit stop bit s The parity bit is used to detect single bit errors in the transmission The parity bit is automatically calculated and inserted by the transmitter The receiver calculates the parity of an incoming byte and compares it to the parity bit sent by the transmitter If the two bit values do not match then at least one serial bit value was corrupted during transmission Flow control allows the receiving device to regulate the rate of incoming data Hardware flow control uses RTS CTS signals between the devices to control the rate of transmission Software flow control uses serial characters XON OFF to control the rate Flow control helps protect against lost data if the receiving device cannot store incoming data fast enough or if the receiving device s buffer is full and cannot accept more data until it processes existing data Data Conversion The PFB366 gateway can either pass through received serial message bytes to your application or
29. cknowledges receipt by setting the Receive Acknowledge bit equal to the Receive Toggle bit The gateway is now able to start processing the next serial message packet The Receive Toggle and Receive Acknowledge bits are set to 0 at power up The Receive Acknowledge bit maps to bit 0 in the second byte of the Profibus output data The Receive Toggle bit maps to bit 0 in the second byte of the Profibus input data This bit mapping MKS Instruments Inc D I P Products Group 20 PFB366 User Manual revision 1 20 makes it easy for ladder logic applications to implement the gateway s receive synchronization process The following 2 ladder logic rungs show how an application program can monitor for the gateway s Receive Toggle bit copy the new Receive Data value to save it and set the Receive Acknowledge bit equal to the Receive Toggle bit bit 1 bit 0 RX Toggle RX Ack copy RX Data to variable RX Ack bit 1 bit 0 bit 1 RX Toggle RX Ack copy RX Data to variable RX Ack bit 0 The gateway transmit synchronization is always enabled Serial Transmit Process The gateway will not process its Transmit Data output bytes until its Transmit Toggle bit changes state When the user application sends new Transmit Data to t
30. converts this into the ASCII string MKS Instruments Inc D I P Products Group 16 PFB366 User Manual revision 1 20 25 The Width is 3 bytes greater than 25 but leading zeros are not selected Example 11 Data Type REAL Width 13 Precision 6 Conversion No Leading Zeros Transmit Data is OxNN OxNN OxNN OxNN representing the real number 1 2345E 16 The Serial Transmit Process Parameter converts this into the ASCII string 1 234500 16 The Precision is 2 bytes greater than needed so trailing zeros are added after the decimal point Serial Receive Example The following example shows how the PFB366 gateway captures a serial message packet processes the packet converts the data into a number and returns it as a Profibus input value The gateway s Serial Stream Process is configured for the List delimiter mode with a one byte Pre Delimiter string and a two byte Post Delimiter string An incoming message must have matching delimiter strings to be accepted as a valid message packet The Serial Receive Process has the Use Pre String Use Data and Use Post String options selected for its Receive Mode The message packet must have matching Pre String and Post String values before the data is processed The Data Type is configured for SINT with a Width of 2 and Conversion set for decimal The data field s two byte ASCII string represents a decimal number which is converts into an 8 bit signed integ
31. data bytes is 12 plus the length byte The Receive Mode is Use Data Field Serial Receive Process Parameters Configuration Parameter Group 65 Device 1 Parameter Data Parameter Group Device Number Value Description 6 Receive Mode 1 0x41 0x01 0x06 0x01 Use Data Field 9 Data Type 218 0x41 0x01 0x09 OxDA Short String 10 Data Size 13 0x41 0x01 OxOA OxOD 1 length byte 12 data bytes The gateway will return 15 input bytes to the Profibus master The input bytes are organized as follows Transmit Acknowledge bits Receive Toggle bits Receive Data Short String 1 byte 1 byte 13 bytes The gateway will always return 13 of Receive Data even if the scanned barcode data contains fewer bytes The application should check the Short String length byte to determine the number of valid data bytes being returned Receive synchronization may also be used by enabling the Sync Enabled parameter MKS Instruments Inc D I P Products Group 39 PFB366 User Manual revision 1 20 Example 2 Receiving Delimited Data Using the same configuration as Example 1 the scanned UPC labels are printed in the following formats MODEL xxx The xxx are 3 ASCII characters that represent a number from 1 to 100 The gateway is configured to read this specific UPC label format convert the ASCII characters into integer and return them as Profibus input data Barcode Scanner The barcode scanner s RS232 channel is set for 9600 bps 8 data
32. disabled ASCII representation 1234 The following examples show a variety of different gateway data conversions for received and transmitted data values Example 1 Data Type Short String Data Size 9 Received ASCII data is 12345678 The Serial Receive Process parameter coverts this to 9 bytes of Receive Data 0x08 0x31 0x32 0x33 0x34 0x35 0x36 0x37 0x38 or 0x08 12345678 The first byte defines the Short_String length as 8 bytes Example 2 Data Type Short String Data Size 5 Received ASCII data is 12345678 The Serial Receive Process Parameter converts this to 4 bytes of Receive Data 0x04 0x31 0x32 0x33 0x34 or 0x04 1234 The first byte defines the Short_String length as 4 bytes With Data Size 5 only the first 4 data bytes are used Example 3 Data Type Short String Data Size 12 Received ASCII data is ABCDEFGH The Serial Receive Process Parameter converts this to 9 bytes of Receive Data 0 08 0x41 0x42 0x43 0x44 0x45 0x46 0x47 0x48 or 0 08 ABCDEFGH The first byte defines the Short_String length as 8 bytes Even though Data Size 12 only the 8 received bytes are returned Example 4 Data Type SINT Width 5 Conversion Hex Received ASCII data is 18 The Serial Receive Process Parameter converts this to 1 byte of Receive Data 0x18 Example 5 Data Type INT Width 4 Conversion Decimal Received ASCII dat
33. e using the converted string The gateway receives new output data from the Profibus master The first output byte contains the Transmit Toggle bit bit 0 The second byte contains the Receive Acknowledge bit bit 0 The remaining data bytes are the Transmit Data value In this example Serial Transmit Process receives a toggled Transmit Toggle bit indicating the application has sent a new Transmit Data value to the output bytes Serial Transmit Process is configured for SINT Data Type with Width of 2 and Conversion set for decimal with no leading zeros It converts its new Transmit Data value 0x52 into the ASCII string 82 The Transmit Mode parameter is set for String Before Data and String2 After The resulting serial message that gets loaded into the gateway transmit buffer consists of Stringl 82 String2 The message will be sent when the serial channel transmitter 15 available When the new message is loaded in the transmit buffer the gateway toggles its Transmit Acknowledge bit indicating that is it ready to receive the next Transmit Data value The updated Transmit Acknowledge bit is read by the application as an input byte There may have been subsequent Profibus read write cycles in between the time the gateway received the new Transmit Data value and the time it toggles its Transmit Acknowledge bit Serial Transmit Process Serial PFB366 EROFIBUS INPUT d Profibus Device Gateway Master
34. eam Process also scans incoming serial data for valid message packets A message packet is determined by one of three Delimiter modes List mode searches for Pre Delimiter and Post Delimiter byte strings at the beginning and end of a message Length mode captures a specific number of message bytes defined by Packet Length Timeout mode uses an inter byte delay Packet Timeout to signal the end of a message When a message packet is received it is processed by all enabled Serial Receive Process The following examples show the three Serial Stream Process Delimiter modes Incoming data stream 0x45 0x62 0x02 0x31 0x32 0x32 0x42 0x45 0x03 OxOD 0x11 delay 0x43 0x56 List Mode delimiters 0x31 0x32 0x32 0x42 0x45 0x03 0x0D Pre Delimiter Message Packet Post Delimiter Packet Length 8 Message Packet 0 45 0x62 0x02 0x31 0x32 0x32 0x42 0x45 0x03 0 0 0 11 Timeout Mode Gnter byte delay Packet Timeout 100 msec Message Packet MKS Instruments Inc D I P Products Group 11 PFB366 User Manual revision 1 20 Serial Receive Process The Serial Receive Process processes the Message Packet bytes converting them into an input data value that is returned to the Profibus master The Message Packet bytes can be converted into a Short String data type byte array with 1 byte length ASCII characters within the Message Packet representing a numerical value can also be converted into signed or unsigned integer or real number data types
35. er The converted number is saved as the new Receive Data value The gateway also toggles its Receive Toggle bit to signal the reception of new data When the gateway is polled for input data it returns the Transmit Acknowledge byte Receive Toggle byte and Receive Data byte s The Transmit Acknowledge bit is mapped to bit 0 in the first byte The Receive Toggle bit is mapped to bit 0 of the second byte The Receive Data value makes up the rest of the input bytes The Profibus master passes these input bytes for the application program The user application receives the updated gateway inputs Program logic recognizes the state change in the Receive Toggle bit indicating that gateway has sent new input data To acknowledge that it has read the new data the user application toggles the Receive Acknowledge bit which gets sent back to the gateway by the Profibus master When the Serial Receive Process gets the updated Receive Acknowledge bit it can then process the next incoming serial message MKS Instruments Inc D I P Products Group 17 PFB366 User Manual revision 1 20 Serial Receive Process Serial STX TEMP 64 CR ETX PFB366 INPUT DATA BYTES Profibus Device F Gateway Master lt OUTPUT DATA BYTES 1 Serial Device transmits message Serial Data ASCII lt STX gt T E M lt SP gt SP 6 4 SP C CR lt gt Serial Data hex 0x02 0x54 0x45 0x4D 0x50 0x20 Ox3D 0x20 0
36. eros hexadecimal integer 1 0 128 0x80 leading zeros decimal integer 1 1 129 0x81 leading zeros hexadecimal integer MKS Instruments Inc D I P Products Group 29 PFB366 User Manual revision 1 20 When bit 0 0 the ASCII bytes represent the Transmit Data integer number in a decimal format When bit 0 1 the ASCII bytes represent the integer number in a hexadecimal format This bit only applies to SINT INT USINT and UINT Data Types When bit 7 1 leading zeros are added to real and integer numbers as needed to match the Width setting This bit only applies to SINT INT USINT UINT and REAL Data Types MKS Instruments Inc D I P Products Group 30 PFB366 User Manual revision 1 20 Configure Profibus Master You must calculate the number of input and output bytes required by your PFB366 configuration before you configure the Profibus master You need to configure the Profibus master to send the specific number of output bytes and receive the specific number of input bytes from the gateway Once the input and output bytes are mapped in the Profibus master the user application program will be able to read and write data values to the input and output bytes Three 3 or four 4 Profibus master configuration bytes specify the presence and size of the gateway s input and output data Use 3 configuration bytes if the gateway is only used for receiving or transmitting messages Use 4 configuration bytes if the gateway is used to b
37. f I 9 bytes 8 Short Stine Sting of 1 9 byes Data Type USINT 194 0xC2 SINT 1 byte 195 0xC3 INT 2 bytes 198 0xC6 USINT 1 byte 199 0xC7 UINT 2 bytes 202 0xCA REAL 4 bytes 218 0xDA Short String Data Size bytes USINT USINT 13 Conversion USINT 0x44 decimal integer X 0x58 hexadecimal integer 14 Pad Char CHAR byte value Pad Poll Response if Rx data does not fill up Poll response message data Sync Enabled BOOL 0 disabled 1 enabled Receive Mode Defines how the gateway processes message packet bytes The gateway can search for 3 fields Pre String Data and Post String Set associated bits 0 1 2 to use the desired fields Set the remaining bits 3 through 7 to zero Pre String Data Post String Pre String parameter defines the byte string for the Pre String field Data Size parameter defines the number of bytes expected in the Data field Post String parameter defines the byte string for the Post String field When Use Pre String bit is set the gateway searches the message packet bytes for a match to the stored Pre String If a match is not found the message packet is ignored When Use Data bit is set the gateway converts the Data Size number of message bytes into a value defined by Data Type and saves it as Receive Data If there are not enough message bytes the message packet is ignored You must select Use Data in o
38. he RX LED flashes green when a packet is being received A fault is indicated by solid red After power up both LEDs should be off State Transmit Status LED TX Off No data being transmitted Flashing Red Not defined Solid Red Transmit error parity or overrun error Flashing Green Data being transmitted Solid Green Not defined State Receive Status LED RX Off No data being received Flashing Red Not defined Solid Red Receive error parity or overrun error Flashing Green Data being received Solid Green Not defined Register GSD File If using a Profibus configuration tool that supports GSD files you should now register the gateway s GSD file with the software The latest GSD file versions can be downloaded from www mksinst com Select the GSD file that matches your gateway s part number and firmware version Follow your configuration tool instructions to register GSD file MKS Instruments Inc D I P Products Group 23 PFB366 User Manual revision 1 20 Configure Serial Channel The Serial Stream Process parameters control the physical layer settings for the PFB366 serial channel These settings apply to all serial transmit and receive operations The parameters also configure the reception of message packets Before you can set or change any gateway configuration settings make sure the gateway is not on line with the Profibus master Serial Stream Process Parameter Parameter
39. he gateway it must toggle the Transmit Toggle bit This enables the gateway to process the new output value and load the resulting serial message into the transmit buffer When the message is loaded for transmission the gateway acknowledges transmission by setting its Transmit Acknowledge bit equal to the Transmit Toggle bit The application can now send the next Transmit Data value The Transmit Toggle and Transmit Acknowledge bits are set to 0 at power up The Transmit Toggle bits maps to bit 0 in the first byte of the Profibus output bytes The Transmit Acknowledge bit maps to bit 0 in the first byte of Profibus input bytes This bit mapping makes it easy for ladder logic applications to implement transmit synchronization The following 2 ladder logic rungs show how an application program writes the gateway s Transmit Data value toggles the Transmit Toggle bit and waits for the Transmit Acknowledge bit to equal the Transmit Toggle bit before writing the next Transmit Data value bit 0 bit 0 TX Toggle TX Ack copy variable to TX Data Toggle bit 1 bit 1 bit TX Toggle TX copy variable to TX Data TX Toggle bit 0 MKS Instruments Inc D I P Products Group 21 PFB366 User Manual revision 1 20
40. iagnostic byte for TX buffer Overflow or Parity Error Reset Gateway or clear Serial Status error bit 1f necessary Make sure parity is set to match transmitting device TX LED does not flash green when Gateway should be transmitting data If Sync Enabled make sure Transmit Toggle is being toggled If application does not toggle Transmit Toggle Gateway will not transmit data MKS Instruments Inc D I P Products Group 39 PFB366 User Manual revision 1 20 The slave contains diagnostic data showing the current state and any error that may have occurred Among the first six bytes is the station status shich displays the status and any fault of the slave including if watchdog freeze mode and sync mode are enabled extended or static diagnostic exist the slave is activated or any parameter configuration fault occurred For example if Serial Receive Transmit LEDs turn solid red check the extended diagnostics message to determine what type of error occurred The length of error message is shown in the seventh byte and the actual error data begins at the eight byte Slave Single Diagnostic Station Station Station Master Indent Length Extended Status 1 Status2 Status3 Address Number of Ext Diagnostics Diag Extended Diagnostic Byte Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 0 Reserved Reserved Reserved Error3 Reserved Reserved Error2
41. ion 1 20 CTS RTS is an RS232 hardware flow control option available only on the PFB366 gateway The RTS is an output and CTS is an input signal The gateway keeps RTS active low when it can receive data It only transmits data when CTS is active low Delimiter Mode Defines how the gateway determines when it has received a message packet The three delimiter modes are List Timeout and Length Setting the appropriate bit in the Delimiter Mode byte selects the respective mode The Delimiter Mode byte defines bits 0 1 2 only Set the remaining bits 3 through 7 to zero List mode is used when a message packet is framed by a specific strings of Pre Delimiter and Post Delimiter bytes The Pre Delimiter signals the start of a new packet The Post Delimiter indicates the end of the packet Each Pre Delimiter and Post Delimiter string can be from 1 to 9 bytes in length When the gateway receives the Pre Delimiter string it saves the subsequent data bytes until the Post Delimiter string is received The Pre Delimiter and Post Delimiter bytes not saved in the message packet The following is a simple ASCII message example Pre Delimiter Message Packet Post Delimiter sts data1 data2 dataN erst ic Length mode is used when every message packet contains the same number of bytes The Packet Length parameter defines the packet size from 1 to 255 bytes The gateway saves serial bytes until it receives the specified number and sa
42. ive Synchronization Transmit Synchronization CHAPTER 4 GATEWAY CONFIGURATION eee e eee eee eee eee ette ettet eee eese eese ee eee ee ee ee eese eese ee eese eate eate tete 22 CONFIGURE PROFIBUS INTERFACE ccscccessssceceeseeeecsnsccesessaececseaaeesseeeecsesaeeecseaeeeesueeecsesaesecseaeeessueeeceesaeseceeaaess 22 Node2Adakess SWIIOIS 1e oi too 22 POWER UPAGATEWOAYU eicere rera S PR AEN REATUS RE PATERE 22 Gatewayt st tus LEDS es soot dp bed 22 SeriabCh nnelStatus DEDSs ettet e dise 23 Register GSD File andere entia e cuo en IO ERR ERE IR EHE E 23 CONFIGURE SBRIAE CHANNEEL ie PEU GER TG ARI Ce re FAT ORI 24 SERIAL RECEIVE PROCESS SETTINGS iis mese uer tese cet ect abe c dota Ee ee CORRER 26 SERIAL TRANSMIT PROCESS SETTINGS CHER e Fe a RENE Ta de Eii eodd 29 CONFIGURE PROFIBUS MASTER 32 CHAPTER 5 CONFIGURATION EXAMPLES ccscscssscscscscscscsescscsesesesesesesesesesesesesesesesesesesesesesesesescsescees 33 EXAMPLE RECEIVING DATA ae ien rette eter pei ex trecenti o 33 ete e eee dede ce PS i 33 PEB366 Gateway e dere de rette ripe ehe ehe gene oe be geo ede Uode see 33
43. length byte 26 data bytes The gateway expects to receive 28 output bytes from the Profibus master with the data organized as follows Transmit Toggle bits 0 Receive Acknowledge bit 0 Transmit Data Short_String 1 byte 1 byte 26 bytes MKS Instruments Inc D I P Products Group 36 PFB366 User Manual revision 1 20 The gateway is now configured to receive ASCII text messages up to 25 characters in length and send them to the serial printer The Profibus master will always send 28 output bytes to the gateway even if the text message is shorter than 25 characters The gateway uses the Short_String length byte to determine the number of valid characters to be transmitted Transmit synchronization must be used by the application The application toggles the Transmit Toggle bit in the first output byte and monitors the Transmit Acknowledge bit in the first input byte When the Transmit Acknowledge bit equals the Transmit Toggle bit then the application can send the next text message MKS Instruments Inc D I P Products Group 37 PFB366 User Manual revision 1 20 Example 4 Transmitting Delimited Data Using the same configuration as Example 3 the PFB366 gateway is configured to print a pre defined text messages and inserting an integer value into a message TEMP xxx C xxx F CR lt LF gt 15 value range of 50 to 400 Serial Printer The serial printer s RS232 channel is set for 300 bps 7 data bits
44. or RS422 485 interface may vary Refer to your device s documentation for the required data and control signals Simple RS232 Interface Q RS232 Serial Device RS232 Serial Device 11 28VDC Suppl MKS Instruments Inc Products Group 8 PFB366 User Manual revision 1 20 Chapter 3 Theory of Operation This chapter describes how the PFB366 gateway operates You should have a working knowledge of Profibus DP and asynchronous serial communications before continuing Refer to your serial device documentation for its protocol information Gateway Operation The PFB366 gateway receives asynchronous serial messages over its serial channel converts them to data values and returns the values as input data to the Profibus master The gateway receives output data from the Profibus master converts them into serial messages and transmits the messages out its serial channel The following diagram shows the major gateway components DC DC Power Conversion 11 28VDC power input VDC for Core amp Serial channel output data isolated VDC for Profibus channel Female DB9 connector Male DB9 connector Power Gateway Core s e RAM Flash ROM Serial messages input data Profibus Channel Isolated SVDC communications communications flow control Rotary Switches Serial Transmit Process Serial Receive Process Serial Stream P
45. ormat is a length byte followed by data bytes so you must add one to the expected number of bytes The table above defines the data size for all other data types The PFB366 gateway supports a maximum of 28 bytes for the Transmit Data value and 28 bytes for the Receive Data value The Width parameter defines the number of ASCII bytes 1 to 16 used to represent a real or integer number For received messages Width defines the number of ASCII bytes that will be converted into a number For transmitted messages Width defines how many ASCII bytes will be generated to represent the number The Width value must include ASCII sign exponent E and decimal point characters Width is not used for Short String data types The Precision parameter is only used for transmitted messages It defines the number of digits 1 to 6 after the decimal point for a floating point number The gateway will automatically add trailing zeros to the converted number if needed Precision is only used for the REAL data type The following examples show how to calculate the Data Size Width and Precision parameters for the different Data Types Remember to add a length byte to the Short String Data Size Data Type ASCII chars Data Size Width Precision SINT 12 1 3 not used INT 12345 2 6 not used USINT 123 1 3 not used UINT 1234 2 4 not used REAL 1 23E 4 4 7 2 REAL 1 1234E 12 4 11 4 Short_ String ABCDEF 7 length 6 not
46. oth receive and transmit messages Connfig Byte 1 Config Byte 2 Config Byte 3 Config Byte 4 Configuration byte 1 defines the first 2 input and output bytes used for the gateway s transmit and receive synchronization process Its value is 0x31 49 0x31 The second configuration byte defines the remaining gateway input and output data bytes This special ID byte declares the presence of Receive Data input and or Transmit Data output bytes Enter 192 to use both Receive Data input bytes and Transmit Data output bytes Enter 0x80 128 to use Transmit Data output bytes only no input data bytes Enter 0x40 64 to use Receive Data input bytes only no output data bytes The third and fourth configuration bytes define the required number of Receive Data and Transmit Data bytes The number of bytes specified in the configuration must be one less than the corresponding value s Data Size For example if the Receive Data consists of 4 input bytes enter 3 as the Receive Size If the Transmit Data consists of 2 output bytes enter 1 as the Transmit Size When using both Receive Data and Transmit Data each value s size is specified in the third and fourth configuration Use Input amp Output Data Bytes 0x31 0xCO Receive Size Transmit Size Use Output Data Bytes Only 0x31 0x80 Transmit Size Use Input Data Bytes Only 0x31 0x40 Receive Size
47. pre process an ASCII string into a numerical value The gateway can transmit a string of message bytes sent by the application or it can convert a numerical value into an ASCII string to be transmitted Using the gateway s data conversion feature offloads this cumbersome task from your application program especially if it is a PLC ladder logic application It also reduces the required number of Profibus input and output bytes since converted values instead of entire message strings are transferred over Profibus The gateway conversion process supports the following data types Data Type Data Size Value Range SINT signed 8 bit integer 1 128 to 127 INT signed 16 bit integer 2 32768 to 32767 USINT unsigned 8 bit integer 1 0 to 255 UINT unsigned 16 bit integer 2 0 to 65535 REAL 32 bit floating point 4 1 175 38 to 3 4028E 38 Short_String byte array 2 to 26 string of bytes 1 byte defines length The Serial Transmit Process and Serial Receive Process parameters configure the conversion process for transmitted and received messages The Data Type parameter selects the desired data MKS Instruments Inc D I P Products Group 14 PFB366 User Manual revision 1 20 type for the Receive Data or Transmit Data value The Data Size parameter represents the number of bytes used by the selected data type You must select the maximum data size expected for your application if using the Short_String data type The Short_String byte array f
48. rder to send input data to the Profibus master When Use Post String bit is set the gateway searches the message packet bytes for a match to the stored Post String If a match is not found the message packet is ignored MKS Instruments Inc D I P Products Group 26 PFB366 User Manual revision 1 20 Pre String Required if Use Pre String selected in Receive Mode Enter a string of 1 9 bytes in Short String data format with 1 byte string length Example Pre String is 0x01 0x41 where string length is 1 and pre string character is 0x41 A Post String Required if Use Post String selected in Receive Mode Enter a string of 1 9 bytes in Short String data format with 1 byte string length Example Post String is 0x02 0x42 0x43 1 where string length is 2 and post string characters are 0x42 and 0x43 C Data Type The gateway converts received ASCII message data into the selected data type for Receive Data Decimal Hex Data Type Date Size byte Value Range SINT signed 8 bit integer 128 127 INT signed T6 it integer 32768 3276 Enter number from decimal hex column to select desired data type Data Size column defines the number of data bytes for Receive Data For Short_String set Data Size parameter to the desired number of data bytes plus length byte Set the Width parameter to the expected number of ASCII bytes to be converted into a real or integer number
49. rocess Configures the Profibus Converts output data from Converts received message Configures the serial channel interface Profibus master into a packet to input data Input Scan channel for valid message message packet Transmits data returned to Profibus packets which are passed to message packet out the serial master Serial Receive Process channel MKS Instruments Inc D I P Products Group 9 PFB366 User Manual revision 1 20 Profibus DP Interface The PFB366 gateway operates as a Profibus DP slave The Profibus master cyclically polls the gateway sending output data and reading input data The output and input data bytes are typically mapped into data files inside the Profibus DP master These data files are exchanged with the user application program which acts upon the received input data and writes new output data to the Profibus master Invut File Inputs ud cm input data Receive U En sd Message Packet Outputs Message Packet Profibus Master Output File gt E output data Transmit 1g Serial Device Application Program PFB366 Gateway Profibus DP network The first 2 output data bytes received from the Profibus DP master contain synchronization bits for the gateway transmit and receive operations The remaining output data bytes contain serial message data to be transmitted out the serial channel Tx Synchronization Bytes Rx
50. s Parameter Group 64 Parameter Device 1 Number Name Data Type Value Baud Rate UDINT 1300 1200 2400 4800 9600 19200 bps i pum Parity USINT 0 parity 1 odd parity 2 even parity 3 mark space sop is D UST EN low Control USINT none 1 XON 2 BN Mode USINT Bit 0 List mode Bit 1 Timeout mode Bit 2 Length mode Baud Rate Sets the serial channel s data or baud rate Enter Baud Rate in bits per second bps as a decimal number Data Bits Selects the number of data bits in one serial byte This number does not include start parity or stop bits Parity Selects the parity type used in the serial byte Selecting any parity option other than NONE adds 1 parity bit to the serial byte length Stop Bits Selects the number of stop bits in one serial byte Flow Control Selects the method of flow control used across the serial interface NONE means there is no flow control over the serial data exchange The transmitting device can overflow the receiving device s buffer XON XOFF is a software flow control option Receiving device sends an XOFF character to the transmitting device when its buffer is full stopping further transmission It sends an XON character when it can again receive data The XOFF and XON characters are not saved as message data MKS Instruments Inc D I P Products Group 24 PFB366 User Manual revis
51. set for 300 bps 7 data bits even parity and 2 stop bits It uses XON XOFF software flow control PFB366 Gateway The PFB366 serial channel is configured to transmit this RS232 message format The Serial Stream Process parameters are shown below for this application The 3rd column lists the parameter group device number Serial Stream Process Configuration Parameter Group 64 Device 1 Parameter Data Parameter Group Device Number Value Description 3 Baud Rate 300 0x40 0x01 0x03 0x01 0x2C 300 bps 4 Data Bits T 0x40 0x01 0x04 0x07 7 data bits 5 Parity 2 0x40 0x01 0x05 0x02 Even parity 6 Stop Bits 2 0x40 0x01 0x06 0x02 2 stop bit 7 Flow Control 1 0x40 0x01 0x07 0x01 XON XOFF The next step is to configure the PFB366 gateway to transmit data received from the Profibus master to the serial printer To allow the printing of any text message the gateway is configured to pass through the ASCII data bytes from the Profibus master to the printer The gateway will receive a Short_String variable from the Profibus master The Data Type is Short_String with a Data Size of 26 maximum text message size is 25 plus the length byte The Transmit Mode is Use Data Serial Transmit Process Configuration Parameter Group 66 Device 1 Parameter Data Parameter Group Device Number Value Description 6 Transmit Mode 1 0x42 0x01 0x06 0x01 Use Data 9 Data Type 218 0x42 0x01 0x09 OxDA Short_String 10 Data Size 26 0x42 0x01 Ox1A 1
52. ts are set the gateway places the respective byte string s at the beginning of the message packet If both options are selected String is placed before String2 The gateway then loads the converted data bytes in the Data field Ifthe String After and or String2 After bits are set the Parameter places the respective byte string s at the end of the message packet If both options are selected then Stringl is placed before String2 The message packet is then loaded into the Transmit Buffer to be sent out the serial channel MKS Instruments Inc D I P Products Group 28 PFB366 User Manual revision 1 20 String1 Required if String Before or String After selected in Transmit Mode Enter a string of 1 9 bytes in Short String data format with 1 byte string length Example String is 0x02 0x41 0x42 where string length is 2 and post string characters are 0x41 A and 0x42 String2 Required if String2 Before or String2 After selected in Transmit Mode Enter a string of 1 9 bytes in Short String data format with 1 byte string length Example String2 15 0x03 0x43 0x44 0x45 where string length is 3 and post string characters are 0x43 0x44 D and 0x45 E Data Type Defines the Transmit Data parameter data type Decimal Hex Data Type Date Size byte Value Range SINT signed 8 bit integer 128 127 INT signed T6 it integer 32768 32707 Enter number from decimal
53. ves them as one message packet Timeout mode uses a delay between received data bytes to determine the end of a message packet The Packet Timeout parameter defines the time out period from 1 to 255 milliseconds Pre Delimiter List Required for List Mode Enter a string of 1 to 9 bytes that defines the start of a new serial message Use Short String data format with 1 byte string length Example Pre Delimiter is 0x01 0x02 where string length is 1 and delimiter character is 0x02 STX Post Delimiter List Required for List Mode Enter a string of 1 to 9 bytes that defines the end of a serial message Use Short String data format with 1 byte string length Example Post Delimiter 15 0x02 0 0 0x03 where string length is 2 and delimiter characters are 0 0 CR and 0x03 ETX Packet Timeout Required for Timeout Mode Defines the timeout period between received bytes that indicates the end of a message packet 1 255 milliseconds Packet Length Required for Length Mode Defines the message packet size 1 255 bytes MKS Instruments Inc D I P Products Group 25 PFB366 User Manual revision 1 20 Serial Receive Process Settings This section describes how to configure the Serial Receive Process Serial Receive Process Parameters Parameter Group 65 Parameter Device 1 Receive Mode USINT Bit 0 use Data Field Bit 1 use Pre String Field Bit 2 use Post String Field Short String String o
54. x36 0x34 0x20 0x43 OxOD 0x03 2 Serial Stream Process receives message and loads into rx buffer without delimiters Delimiter Mode List Pre Delimiter 0x01 0x02 Post Delimiter 0x02 0x0D 0x03 3 Serial Receive Process processes message packet Pre String 0x07 TEMP Data 64 Post String 0x02 4 ASCII data to Data Type value Data Type SINT Width 2 Conversion 0x36 0x34 gt 64 64 decimal gt 0x40 hex 0x40 5 PROFBUS INPUT DATA BYTES TA Transmit Acknowledge byte RT Receive Toggle bits toggled 0 0x40 Receive Data 6 PROFIBUS OUTPUT DATA BYTES TT Transmit Toggle byte Receive Data value sent to Profibus master V 0x54 0x45 Ox4D 0x50 0x20 Ox3D 0x20 0x36 0x34 0x20 0x43 V 0x54 0x45 Ox4D 0x50 0x20 Ox3D 0x20 0x36 0x34 0x20 0x43 D 0x36 0x34 Y TA RT2xxxxxxx1 0x40 1 Application acknowledges reading new Receive Data TT RA xxxxxxx1 Tx Data RA Receive Acknowledge byte bit 0 set to 1 MKS Instruments Inc D I P Products Group 18 PFB366 User Manual revision 1 20 Serial Transmit Example The following example shows how the PFB366 gateway receives Profibus output data converts the data into an ASCII string then builds and transmits a serial messag

PFB366 Profibus-DP Gateway User Manual

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