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Schneider Electric none Network Router User Manual

1. NW BM85C002 NW BM85D008 NW BM85 000 PVOS or greater NW BM85 000 ST OP BITS UP 1 DOWN 2 NW BM85C002 PORT 1 UP UP PORT 2 UP DOWN BAUD RATE PORT 3 DOWN UP 9600 UP PORT 4 DOWN DOWN 2400 UP 1200 DOWN UP 300 DOWN DOWN rEFENW BM85D008 MODE UP RUN APPLICATION LEAVE IN UP POSITION PARITY DISABLED UP UP EVEN UP DOWN DISABLED DOWN UP ODD DOWN DOWN Figure 10 BM85 Modbus Models Port Configuration Switches 40 Configuring the Modbus Models 31007492 31007492 3 5 3 Set the CONFIGURE Mode Set switch 1 to the CONFIGURE position UP Define the Configuration Port Switches 2 and 3 determine the port connector to be used for connecting the serial terminal Set them for the port you want to use Set the Configuration Port Parameters NW BM85 000 Set switches 4 8 to match the terminal s baud rate parity mode and stop bits The port always uses 8 data bits for configuration Set the Configuration Port Parameters NW BM85C002 D008 Set switches 4 7 to match the terminal s baud rate and parity mode The port always uses 8 data bits and 1 stop bit for configuration Always leave switch 8 in its RUN UP position The BM85 will not run unless switch 8 is UP Connecting the Terminal What You Will Need You will need a serial terminal and cable of the types listed in Compatible Devices and Cables in Appendix A Connect the Terminal The BM85 power sho
2. 0 ccc cece cece eee 51 3 11 Setting the Modbus Plus Address 0 cece cece eee eeee 52 3 12 Setting the RUN Mode 0 ccc cee cee rear 53 vi Contents 31007492 3 12 1 When to Set the RUN Mode 0 0 00 00 e eee 53 3 12 2 Howto Set the RUN Mode 00 c eee eee 53 3 13 Modbus Port Indicator Codes 0 0 ccc cece nee ene eene 54 Chapter 4 Configuring the Programmable Models 57 All Before You Start iis reese riren e rir Qatar EDP ese A ohare A AE 58 4 1 1 Models Covered in This Chapter 000005 58 4 1 2 An Overview of the Configuration Process 58 4 2 Required Equipment stars parade each kasd man Bee Seanad SDS 59 4 2 1 Equipment for Writing the Application Program 59 4 2 2 Equipment For Downloading the Application Program 59 4 3 Overview of the Development Software 0 ccc cee eens 60 4 3 1 Development Software Files 0 00 cece eens 60 4 3 2 The README DOC Information File 60 4 3 3 Test and Demonstration Source Files 61 4 3 4 Multitasking in Your Application 04 61 4 4 Installing the Development Software 00 cece cee eens 62 4 4 1 Default Parameters 0 cece eee eens 62 4 4 2 Installation Steps cerere dr er eae oes wea AEEA E 62 4 5 Preparing the BM85 for Downloading 0
3. 6 Ifeither of these parameters is true continue with Step 7 If neither is true skip Step 7 and go to Step 8 Your SA85 SM85 interrupt is set to a vector other than 5C Your BM85 Modbus Plus node address is other than 4 7 Update the BM85LOAD and MBPSTIM command lines in the BM85 project s TRANSFER menu to use the new parameters In the Borland 3 1 environment you can use the following key sequence Key Sequence Alt T Select command line Alt E Alt C Enter parameters AR M AR K Purpose Transfer menu Select the BM85 DOWNLOAD or MBPLUS STIMULATE line Edit Command line Set the parameters as they are used in your application Modify OK 8 When you have updated your project file close the project In the Borland 3 1 environment you can use the following key sequence Key Sequence AR C Purpose Project close 31007492 Configuring the Programmable Models 63 64 4 5 Preparing the BM85 for Downloading The BM85 rear panel has two sets of switches One set allows the BM85 to either accept a download or run an application that was previously downloaded The other set of switches assigns a Modbus Plus node address Before you can download your application you must set the switches to allow the load You must also set the node address to agree with the address parameter you are using with the download utility program Instructions for setting the switches are provided in Sect
4. Installing the BM85 Hardware Connecting the Power Cables Connecting the Network Cables Reading the Indicators Modbus Port Error Codes Attaching Identification Labels 31007492 Installing the BM85 69 5 1 Installing the BM85 Hardware 5 1 1 Mounting the BM85 BM85 models are available for mounting on a horizontal shelf or vertical panel or for installation into a standard 19 inch rack Install your unit using the guidelines in Section 5 1 2 for shelf or panel mounting or 5 1 3 for rack mounting The BM85 has a set of LED indicators to show its operating status Your choice of a mounting method should include proper access for observing these indicators You should also provide access to the unit s rear panel for setting the switches connecting the cables and servicing A Caution Do not connect the BM85 into your application environment unless you have set its internal configuration Do not connect it to your network or to any device unless you have set its switches properly for configuring or running See the Specifications Sections 1 6 and 1 7 for details about the BM85 operating power environment and connector requirements 5 1 2 Shelf Panel Mounted Models Operating Modbus Plus Mounting Power Network Serial Serial Part Number Method Nominal Cable Ports Protocol NW BM85 000 Panel or Shelf 115 230 Vac Single Modbus ASCll or RTU NW BM85C002 Panel or Shelf 115 230 Vac
5. 0 ccc ccc seres erra 78 5 4 1 POWER and READY Indicators 0000 78 5 4 2 Modbus and Serial Port Indicators 045 78 5 4 3 Modbus Plus Port Status Indicators 79 5 5 Attaching Identification Labels 0 cc cece eens 80 5 5 1 Modbus Plus Port Label 0 c ccc cee eee 80 5 5 2 Serial Port Parameters Label 00000 e eee 81 Appendix A Compatible Devices and Cables 00ceeeeeeeeees 83 A 1 Compatible Devices and Cables 0 0 ccc cee cent nne 84 A 1 1 Abbreviations uai ne Rai doe biased ee As 84 A 1 2 Making Quick Connections 0 000 e ee 84 A 1 3 Devices and Cables for Configuring Modbus Ports 85 A 1 4 Cables for Modbus Master Devices 00005 85 A 1 5 Cables for Modbus Slave Devices 000 0 000s 85 A2 Modbus RS232 Cable Wiring Diagrams 0 0 0 ce eee 86 A3 Modbus RS232 Ports Pinout 0 87 Ad R9485 Ports Pinout cuspir Aa SAGE ad a wet ads 88 viii Contents 31007492 Index cede inwe eine decease wee Ede a eee aa aa 98 Figures Figure 1 BM85 Bridge Multiplexers on Modbus Plus 3 Figure 2 BM85 With Typical RS232 485 Devices 0 eee e eee 7 Figure 3 BM85 With Typical Modbus Devices 00 000 eee 11 Figure 4 Message Frame Routing Path Field 0005 18 Figure 5 Modbus Plus R
6. Part Number NW BM85 000 NW BM85C002 NW BM85D008 Before You Start Models Covered in This Chapter This chapter covers the configuration process for the following models Operating Modbus Plus Mounting Power Network Serial Serial Method Nominal Cable Ports Protocol Panel or Shelf 115 230 Vac Single Modbus ASCII or RTU Panel or Shelf 115 230 Vac or Single or Dual Modbus ASCII or RTU 24 Vdc 19 in Rack 125 Vdc or Single or Dual Modbus ASCII or RTU 24 Vdc An Overview of the Configuration Process The BM85 requires the setup of internal configuration parameters for each port that you will use in your application The unit contains a non volatile memory that stores the port configurations even when operating power is removed You must set the port configurations using a serial terminal or a PC with a terminal emulation program connected to one of the BM85 ports The BM85 does not have to be connected to the Modbus Plus network A switch is provided on the BM85 to enable the unit to be configured If the unit is already installed at its site you can configure it there You can also do the configuration prior to installing the unit at its site then transport the configured unit to the site and install it You must also set the Modbus Plus node address into a set of switches on the BM85 rear panel Caution You must complete the internal configuration of the BM85 before making the unit active in your appli
7. 1 3000 y n 31007492 31007492 3 8 2 Using the V1 Screen Select the port you want to configure For example enter P4 to select Port 4 and make it the active port Your currently selected port is shown on the bottom line of the screen Specify the port type by entering T with one of the following types M Master S Slave N Network or X Silent Master For example enter TS to setup the currently active port as a slave port A Silent Master port will be labeled xmaster on the screen Specify the port communication parameters you want to use For example enter B9600 to set the port for 9600 baud You can also enter the complete command sequence as a string separated by spaces Example To configure Port 4 as a Slave port Device Address 230 9600 baud 1 Stop Bit Even Parity RTU Port Priority 4 60 seconds Link Timeout and No Modem Booster you would enter the following command string P4 TS N230 B9600 S1 RE MR Y4 L600 FN lt ENTER gt Configuring the Modbus Models 47 48 3 9 Your V2 and V3 Screens 3 9 1 Your V2 or V3 Screen Layout The V2 screen sets up Modbus Address Map table entries 1 32 for the currently selected port The V3 screen sets up the table entries 38 64 Except for their table entries the two screens are identical Figure 12 shows a typical V2 screen Valid commands are listed on the screen MODBUS ADDRESS MAP FOR E1 E32 V2 MAPS Modbus Address to
8. ASCII character mode 9600 baud 7 or 8 data bits 1 or 2 stop bits even odd no parity Models NW BM85C002 and NW BM85D008 do not have a Stop Bits setting These models default to 8 data bits with 1 Stop Bit 3 4 5 Port Priority The Purpose of the Parameter The BM85 services the four Modbus ports in a sequence that you can establish during configuration by setting the Port Priority parameter Setting the Parameter You set the sequence by assigning a priority to each port in the range 1 4 with 1 being the highest priority The port that is assigned priority 1 will be the first port that is serviced on power up 31007492 Configuring the Modbus Models 31 32 3 4 6 Link Timeout The Purpose of the Parameter Link timeout is the maximum time you will allow for a slave device to respond to a command issued at the BM85 Modbus slave port In your application if the timeout value is exceeded a slave device down error code will be returned by the program function initiating the command to the device If the timeout value is too short slower devices may not have time to respond normally to their commands resulting in apparent errors at the device If the value is too long and a device fails to respond your application will have to wait until the timeout occurs before handling the device condition or using the port again A value should be set to handle the slowest device at the port without excessive delay Th
9. W952 IBM AT BM85 W953 25F25F IBM XT BM85 W952 J347 Modvue BM85 25F9M with following signals crossed TX RX RTS CTS DTR DSR VAX A 1 5 Cables for Modbus Slave Devices Device 984 380 480 680 780 984A B X 584 884 Micro 84 484 184 384 J478 modem Cable and Adapter Combination BM85 9M9M W952 984 BM85 W953 984 BM85 25F9M W190 584 BM85 X25F9M W807 884 BM85 X25F9M W807 J375 Micro 84 BM85 25F9M W978 J478 J474 484 BM85 W953 J347 184 384 BM85 25F9M W978 J478 J478 Controller Compatible Devices and Cables 85 86 CABLE APPLICATION W952 IBM AT W953 P230 DEC VT100 IBM XT W978 MODEM W978 P1 P3 GND1 1 GND TXD 2 2 TXD RXD3 3 RXD RTS 4 4RTS CTS 5 5 CTS DSR 6 6 DSR GND7 7 GND cD8 8 CD 9 9 10 10 11 11 12 12 13 13 N C 14 14 N C 15 15 16 16 17 17 18 18 19 19 DTR 20 20 DTR 21 21 22 22 N C 23 23 N C 24 24 25 25 GND 1 RXD 2 TXD 3 DTR 4 GND 5 DSR 6 RTS7 CTS 8 N C 9 GND1 RXD 2 TXD 3 GND 5 DTR4 DSR 6 RTS7 CTS8 N C 9 Figure 25 Modbus RS232 Cable Wiring Diagrams Compatible Devices and Cables A 2 Modbus RS232 Cable Wiring Diagrams W952 1 N C 2 RXD 3 TXD 4 DTR 5 GND 6 DSR Es 7 RTS 8 CTS 9 N C W953 N C 23 N C 31007492 A 3 Part Number NW BM85 000 NW BM85C002 NW BM
10. Enter a Modbus address and five byte routing path into the Modbus Address Map table on the V2 or V3 screen When you use this command enter the following the E command the table location 1 64 for your entry the Modbus address 1 255 to be mapped the five bytes of routing 1 255 in each byte Range 1 8 1 4 1 247 M Master S Slave N Network X Silent Master Network 50 300 1200 1800 2000 2400 3600 4800 7200 9600 19200 1 or 2 Note 1 N None O Odd E Even A ASCII R RTU 1 4 1 3000 in multiples of 100 ms Y Yes N No Entry format EYY MM XX XX XX XX XX where E Modbus Address Map command YY location 1 64 in the table MM Modbus address 1 255 XX each byte 1 255 in the path Notes 1 Models NW BM85C002 and NW BM85D008 do not have a Stop Bits setting These models default to 8 data bits with 1 Stop Bit 42 Configuring the Modbus Models 31007492 31007492 3 6 1 The Default Configuration When you enter the command D the entire set of parameters and Modbus Address Map tables for the ports will be set to their default configuration All four ports will be simultaneously set to their defaults Parameter Port type Slave device address Baud rate Stop bits Parity mode Communication mode Port priority Link timeout value Modem booster Port 1 Master 9600 7 Even RTU 7 Port 2 Slav
11. Modbus Modbus Modbus Modbus error error Modbus power ok port 4 port 3 port2 port 1 Chan B Chan A Plus Figure 22 Layout of the Indicators POWER and READY Indicators The POWER indicator illuminates steadily when the BM85 has power from the source and its internal power supply is operating normally The READY indicator BM85 000 only illuminates steadily when the BM85 has successfully completed its internal diagnostics Modbus and Serial Port Indicators On the Modbus port models each Modbus port indicator flashes when a valid message is received at its port If an internal fault exists an error pattern is flashed These codes are listed in Section 3 13 On the programmable port models each port indicator is programmable to show status that is specific to the application Codes are flashed to show status during downloading These codes are listed in Section 4 8 78 Installing the BM85 31007492 31007492 5 4 3 Modbus Plus Port Status Indicators The green MODBUS PLUS indicator shows the overall communication status at the BM85 node Two red indicators for ERROR CHANNEL A and ERROR CHANNEL B identify errors on the two Modbus Plus cable paths If the ERROR CHANNEL A or ERROR CHANNEL B indicator blinks momentarily it indicates that a message error was detected on the Modbus Plus cable path A steady ON state indicates a hard fault exists either in the cable or in a node device connected to it If communication is lost on one
12. Transmit underflow error 28 RTU transmit communications state error 29 ASCII receive communications state error 2A RTU receive communications state error 2B Transmit communications state error 20 Receive communications state error 54 Configuring the Modbus Models 31007492 2D Modbus state timer event error 2E UART interrupt error Modbus Plus Processor Interface Error Codes 34 36 Hex Code Hexadecimal Meaning Modbus Plus Processor interface error Modbus Plus Processor opcode response error Timeout error waiting for Modbus Plus Processor LLC Layer Error Codes 81 A3 Hex Code Hexadecimal Meaning 81 Master state error 82 Slave state error 83 Unknown routing failure to send 84 8B Port number error 91 Privilege flag not reset 92 Port number error A2 A3 Unknown function code 31007492 Configuring the Modbus Models 55 Chapter 4 Configuring the Programmable Models Before You Start Required Equipment Overview of the Development Software Installing the Development Software Preparing the BM85 for Downloading Setting the Configuration Switches Setting the Modbus Plus Address Indicator Codes During Downloading Setting the RUN Mode 31007492 Configuring the Programmable Models 57 4 1 Before You Start 4 1 1 Models Covered in This Chapter This chapter covers the configuration proc
13. eee eee 64 4 6 Setting the Configuration Switches 0 cece cence 65 4 7 Setting the Modbus Plus Address 0 0 c cece cece eee 66 4 8 Indicator Codes During Downloading 0 0 cc cee eens 67 4 8 1 Normal Download Codes 00 cece eee ees 67 4 8 2 Error Codes sa coptas a e et ata 67 4 9 Setting the RUN Modes sret okera a bse Gaia EUR svn aa aa Car uate 68 4 9 1 When to Set the RUN Mode 000 cc 68 4 9 2 How to Set the RUN Mode 00 c eee ee eee 68 31007492 Contents vii Chapter 5 Installing the BM85 viii awk one as te ee ad 69 5 1 Installing the BM85 Hardware ccc cece cence ences 70 5 1 1 Mounting the BM85 IS KEES ccc eee eee 70 5 1 2 Shelf Panel Mounted Models 000 c cence 70 5 1 3 Rack Mounted Models 0 0 cece cence ene ees 71 5 2 Connecting the Power Cables 0 c cece cece eee e nee eene 74 5 2 1 Connecting AC Power 0 ccc cece cence eens 74 5 2 2 Connecting DC Power 00 cece cence eens 74 5 3 Connecting the Network and Serial Cables 0 00 eeu 76 5 3 1 Connecting a Single Network Cable 77 5 3 2 Connecting Dual Network Cables 005 77 5 3 3 Connecting Dual Cable Units on Single Cable Networks 77 5 3 4 Connecting Serial Port Cables 0 0 e eee 77 5 4 Reading the Indicators
14. 31007492 1 4 1 Software Development Tool Kit A listing of files supplied in the BM85 Software Development kit is provided in Section 4 3 1 The development tools include A Borland C C run time startup routine An object library of BM85 utility routines including functions for managing multiple tasks in the BM85 application A Modbus Plus data transfer utility routine A header file containing function prototypes A compiled demonstration program with source code showing examples of the use of functions in a typical application Test utilities including source code that exercise BM85 hardware The download utility for loading the application to the BM85 The development tool kit is supplied on MS DOS compatible disks Ordering information is given below Contact Modicon Customer Service Telephone 1 800 468 5342 North America 1 508 975 5001 International Part Number Description SR BM85 S00 BM85 Software Development Kit Note 1 SR BM85 SOR BM85 Software Support Renewal Note 2 Notes 1 The kit SR BM85 S00 includes documentation describing how to Install the development software Compile and link your application Download your application to the BM85 2 The kit includes 90 days of BM85 software development technical support service provided by Modicon Customer Service The support renewal SR BM85 SOR extends the BM85 s
15. A type of data output sent by a node using Peer Cop data transfers Nodes using Peer Cop can be configured to send up to 32 16 bit words of Global Output data which is globally broadcast to all active nodes on the network Destination nodes can be configured to accept or ignore incoming data from specific source nodes HDLC High level Data Link Control The part of the device that performs the protocols for defining the beginning and end of a frame synchronizing the frame between sender and receiver providing CRC error checking and defining the portion of the received information that is to be checked by the CRC host computer A computer which controls other computers and devices In an industrial process with networking the host computer specifies the current requirements for the operation of remote nodes and is the destination for summary data reports about the performance of the process IEC International Electrical Commission IEEE Institute of Electrical and Electronics Engineers ISO International Standards Organization 31007492 31007492 LAN Local Area Network An interconnection of devices in which data is transferred without the use of public communications services Modbus Plus is an example of a LAN for controlling and monitoring industrial processes layer In the OSI Model a portion of the structure of a device which provides defined services for the transferring of information See Data Link Layer and Phy
16. Destination Address Port Type Master Table Modbus Destination Address Entry Address 5 bytes lt E1 gt lt E2 gt lt E3 gt lt E4 gt lt E5 gt lt E6 gt ETS lt E8 gt lt E9 gt lt E10 gt lt E11 gt lt E12 gt lt E13 gt lt E14 gt lt E15 gt lt E16 gt gt gt Valid Commands V1 V2 V3 V4 P E Active Port 1 gt gt __ Table Modbus Destination Address 5 bytes Entry Address lt E17 gt lt E18 gt lt E19 gt lt E20 gt lt E21 gt lt E22 gt lt E23 gt lt E24 gt lt E25 gt lt E26 gt lt E26 gt lt E28 gt lt E29 gt lt E30 gt lt E31 gt lt E32 gt Keys Enter Esc help Figure 12 Typical V2 Screen Modbus Address Map Entries Configuring the Modbus Models 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 31007492 310074923 9 2 Using the V2 or V3 Screen Use the V2 screen for configuring entries 1 32 for the selected port Use the V3 screen for configuring entries 33 64 for this port You can alternate between the V2 and V8 screens using commands V2 and V3 The Table Entry column is a listing of locations in the table Note that these are table entry locations not Modbus addresses You must enter the Modbus addresses that you want to map into the second column When you edit the table entries you do not have to do so in
17. Message Routing Paths A single Modbus Plus network can have up to 64 addressable node devices with each device having a unique address of between 1 and 64 Multiple networks can be joined through Bridge Plus devices Devices address each other across Bridge Plus devices by specifying routing paths of five bytes with each byte representing an address on the next network This routing method allows nodes in other networks to be addressed up to four networks away from the originating node The routing path is imbedded in the Modbus Plus message frame as it is sent from the originating node MODBUS PLUS MESSAGE FRAME ROUTING PATH START END EXAMPLE ROUTING ADDRESS ROUTING ADDRESS 1 25 ROUTING ADDRESS ROUTING ADDRESS 2 20 ROUTING ADDRESS ROUTING ADDRESS 3 12 ROUTING ADDRESS ROUTING ADDRESSES 4 5 0 ROUTING ADDRESS NO FURTHER ROUTING Figure 4 Message Frame Routing Path Field Figure 4 is an example of message routing to a programmable controller through three networks that are joined by Bridge Plus node devices The message will first be routed to node 25 a Bridge Plus on the local network That node forwards the message on to a Bridge Plus at address 20 on the second network The second Bridge Plus forwards the message to its final destination node address 12 on the third network The zero contents of bytes 4 and 5 specify no further message routing 2 1 1 Routing to Programmable C
18. POSITION medo doa EO O io ao RO DD a SE St 2 40044004 40044004400440044004400 3 aa O O O O JO O O O Mis oO OO O O O O O 4 Ds O O O O O GC O O Lp O GIO OO O O O 5 o ee cd cd dd dd daadaasOOOOOO0O000000000 31007492 3 12 Setting the RUN Mode 3 12 1 When to Set the RUN Mode Setting the BM85 to its RUN mode applies the parameters you have assigned making the unit ready for operation on the Modbus Plus network and at its Modbus ports When the BM85 is in its RUN mode it will become active in your application as soon as power is applied to the unit A Caution You must complete the internal configuration of the BM85 before making the unit active in your application both on the Modbus Plus network and at its serial ports If you are installing a BM85 that was previously configured for another application another network or a different node the unit will still be retaining its previous configuration setup You must not connect the unit into the current application and apply operating power to the unit until you have reconfigured it for the current application 3 12 2 How to Set the RUN Mode Before you set the unit to RUN mode verify that you have setup its Modbus port parameters and Modbus Plus node address as described in this chapter Turn off power to the Bridge Multiplexer and set its configuration switch 1 to the RUN position Refer to Figure 10 for the configuration switch locati
19. RAM minimum Introducing the BM85 Bridge Multiplexers 13 1 7 Specifications DC DC Power Models 1 7 1 Description Name Bridge Multiplexer Models for DC DC Power BM85 Modbus Plus Bridge Multiplexer Part Number NW BM85D002 NW BM85D008 Mounting Method Vertical Standard 19 in Rack Physical Height 3 47 in 88 mm Characteristics Width 19 00 in 483 mm mounting panel 18 26 in 464 mm hole centers Depth 9 15 in 232 mm Weight 5 5 Ibs 2 5 kg net 6 5 Ibs 3 0 kg shipping Power Requirements 105 to 140 Vdc or 24 Vdc 15 Access Rear panel screw terminals Input Current 0 41 A at 125 V de Inrush Current 6 A typical at 125 V de Ground Leakage 1 mA at 140 V de Fuse External customer supplied Environmental Temperature O 60 degrees C operating 40 80 degrees C storage Humidity O 95 non condensing Altitude 10 000 ft 3 km maximum EMI Radiated 27 500 mHz 10 V m Susceptibility IEC 801 3 level 3 IEEE ANSI C37 90 2 1987 Surge Withstand Fast Transient 2 kV 1 kV on I O V3300 generator into 50 ohms Corresponds to 4 kV 2 kV on I O into open circuit IEC 801 4 level 3 IEEE ANSI C37 90 1 2 3 1989 Surge Transients 2kV IEC 801 5 level 3 Electrostatic Discharge 8 kV ten discharges IEC 801 2 level 3 Surge Withstand Oscillatory Wave 2 5 kV IEEE 472 IEEE A
20. Set the RUN Mode Setting the BM85 to its RUN mode applies the parameters you have assigned making the unit ready for operation on the Modbus Plus network and at its Modbus ports When the BM85 is in its RUN mode it will become active in your application as soon as power is applied to the unit A Caution You must complete the internal configuration of the BM85 before making the unit active in your application both on the Modbus Plus network and at its serial ports If you are installing a BM85 that was previously configured for another application another network or a different node the unit will still be retaining its previous configuration setup You must not connect the unit into the current application and apply operating power to the unit until you have reconfigured it for the current application 4 9 2 How to Set the RUN Mode Before you set the unit to RUN mode verify that you have setup its Modbus port parameters and Modbus Plus node address as described in this chapter Turn off power to the Bridge Multiplexer and set its configuration switch 8 to the RUN position Refer to Figure 15 for the configuration switch location and setting If you have set the BM85 configuration correctly for a specific installation site you can transport the unit to the site and install it The RUN mode will be set when power is reapplied to the BM85 68 Configuring the Programmable Models 31007492 Chapter 5 Installing the BM85
21. a defined sequence For example you do not have to configure E1 before configuring another entry You do not have to fill all the table entries in the V2 screen before making an entry in the V3 screen If you will use no more than 32 entries you might find it convenient to keep them all on one screen Example To use the V2 screen table entry E1 to map Modbus address 20 to the routing path 21 22 23 24 25 you would enter the following string E1 20 21 22 23 24 25 lt ENTER gt You may find it convenient to use a Modbus addressing convention that helps you to remember how addresses are mapped in your application For example you can use the Modbus address 124 to define mapping to a Modbus Plus node address 4 with routing through a Bridge Plus at address 20 In the same convention Modbus address 126 would map to Modbus Plus node 6 through the same bridge Examples are shown in table entries E4 and E6 To map the addresses shown at E4 and E6 you would enter the following strings E4 124 20 4 0 0 0 lt ENTER gt E6 126 20 6 0 0 0 lt ENTER gt 31007492 Configuring the Modbus Models 49 3 10 Your V4 Screen 3 10 1 Your V4 Screen Layout Figure 13 shows a typical V4 screen Valid commands are listed on the screen SAVE AND DEFAULT CONFIGURATION V4 STATUS Configuration parameters CHANGED since last save gt gt Valid Commands V1 V2 V3 V4 W D Keys Enter Esc help Active Port 1 gt gt __ Figure 13 Typi
22. and DEC are registered trademarks of Digital Equipment Corporation IBM and IBM AT are registered trademarks and IBM XT is a trademark of International Business Machines Corporation Microsoft and MS DOS are registered trademarks of Microsoft Corporation Copyright 1995 Schneider Electric Printed in U S A Preface iii Contents Chapter 1 Introducing the BM85 Bridge Multiplexers 1 11 Bridge Multiplexers on Modbus Plus 00 eee eee 2 1 1 1 The Modbus Plus Network 0 0 cece eee 2 1 1 2 The BM85 on Modbus Plus 00 eee eee eee 2 1 2 Overview of BM85 Models ccc cece cece eee ee eee ane 4 1 2 1 Available Models 0 cc cece e cence 4 1 2 2 Mounting Methods 0 cece cece cence 4 1 2 3 Operating Power esia ocr etaa a cee cence anaa A 5 1 2 4 Configuration Methods 00 cece cence eens 5 1 3 Programmable Port Models 0 0 cece cee ese 6 1 4 Configuring the Programmable Models eee eee 8 1 4 1 Software Development Tool Kit 0005 9 1 5 Modbus Port Models 0 2 0c ccc cece eee eee ee eens 10 1 6 Specifications AC DC Power Models 0 cece eee eee 12 1 6 1 Bridge Multiplexer Models for AC DC Power 12 1 6 2 Software Development Tool Kit 05 13 1 6 3 Development Requirement Supplied by Customer 13 1 7 Spec
23. and therefore other commands on the Modbus network cannot be processed until the slave s action has been completed and its response received Other transactions intended for the port must remain pending until that time Some commands such as start and search commands from a Modicon P230 programming panel to a slave controller on the Modbus network can take a relatively long time for processing in the controller in the range of 15 seconds to 2 minutes Polling Transactions Function Code 13 With this type of command the slave will send an acknowledgement of receipt of the command and must be polled later by the master device to determine if the requested action has been completed The command acknowledgement frees the Modbus network for processing messages to other devices on the port The BM85 will poll the slave device periodically to determine if the command action has been completed It will then send the final response to the originating device The Modem Booster parameter allows you to specify which of the two methods will be used at the BM85 Modbus port 34 Configuring the Modbus Models 31007492 31007492 Setting the Parameter You can select No or Yes for the Modem Booster parameter at any serial port The parameter will have the following effect If you select No for this parameter incoming commands with function code 126 or 13 are passed directly to the slave device at th
24. are used to address the device The third byte from the last non zero byte addresses the BM85 node 1 64 The next to last non zero byte specifies the Modbus port 1 4 The last non zero byte specifies the Modbus address of the slave device 1 247 Figure 6 shows an example of routing to a networked slave device BP85 BM85 BM85 SLAVE Ena ADDRESS ADDRESS PORT ADDRESS 1 64 1 64 1 4 1 247 Figure 6 Modbus Plus Routing to Networked Modbus Slave Device Addressing and Message Routing 2 2 Modbus Address Conversion Programmable Port Models For the programmable models the user application stored in the BM85 defines the addressing conventions to be used between the serial ports and Modbus Plus The application program must define the routing between serial ports as well as the paths to Modbus Plus nodes Modbus Port Models For the Modbus port models address conversion between Modbus and Modbus Plus addresses is provided internally as described below Examples are shown in Section 2 3 When the BM85 receives a message at a Modbus port the Modbus address 1 255 is compared to an internal address map for that port You define the map table during your BM85 configuration It can hold up to 64 Modbus addresses each pointing to a five byte routing path If an address match is found in the table the five routing path bytes are applied to the message If the first byte is in the
25. between other devices in the user application and the other slave devices on the BM85 port s Modbus network Note For Modicon 584 Controllers The Modem Booster will not function with 584 controllers that are in SAFE84 mode Function code 13 is not recognized by those controllers in that mode You should select the Modem Booster No option for a BM85 port that will have 584 controllers connected to that port s Modbus network Configuring the Modbus Models 35 3 4 8 Modbus Address Map The BM85 maintains four internal Modbus Address Map tables for routing the Modbus messages received at its four Modbus ports Each port has a table that can hold up to 64 entries that you specify during configuration the location in the table at which you want to place the entry a one byte Modbus address in the range 1 255 decimal a five byte routing path Each table entry specifies how you will want a Modbus address received at the Modbus port to be converted into a five byte routing path to the destination device in your application Routing can be made to a Modbus Plus node on the local network or on a remote network Messages can also be routed to a device on another port of the BM85 When a Modbus message is originated from a device at one of its Modbus ports the BM85 searches the Modbus Address Map table for that port to find a match between the message s Modbus address and a Modbus address stored in the tabl
26. command with driver parameters you can skip this step If you have not installed your adapter and driver then you should do so now before proceeding with the BM85 software installation Follow the instructions in the guidebook supplied with your adapter Part of the adapter installation procedure requires you to specify a software interrupt vector or to accept the default vector 5C If you specify a vector other than the default make a note of the vector You will need this information when you install the BM85 software 2 Ensure that your Borland C C software is installed on your computer and is specified in your PATH command For example if the compiler s executable files are in CABORLANDOIBIN then your PATH command should specify this path 3 Create a working directory for your BM85 development files and copy the entire contents of your BM85 development disk into this directory A suggested name for the new directory is C MBCP 62 Configuring the Programmable Models 31007492 4 Start your Borland compiler development environment as described in your compiler documentation 5 Update the BM85 Project file BM85 PRJ to set the correct directory paths for your Borland environment For example in the Borland 3 1 environment you can use the following key sequence Key Sequence BM85 PRJ Purpose Project open Project name paths Option directories Update the paths for your INCLUDE and LIBRARY directories
27. device to address the slave devices directly as well as to address other devices at other ports on the same BM85 or across Modbus Plus In the Silent Master configuration the slave devices on the port must have unique addresses in your application They must not be the same as a node address 1 64 on the BM85 s local Modbus Plus network They must also not exist as entries in the Modbus Address Map table that you setup within the BM85 The Modbus addresses in the master s queries to the slave devices at the Silent Master port must not map beyond the port not to any routing path on Modbus Plus nor to another port on the BM85 Configuring the Modbus Models 39 3 5 Configuring the Modbus Ports 3 5 1 Connecting Power for the Configuration Refer to the installation chapter in this guide for connecting power to your BM85 Connect the source of AC or DC power to the BM85 Do not turn on the power to the BM85 until you set the Modbus port configuration switches and connect the configuration terminal The switch settings will be sensed when power is applied 3 5 2 Setting the Switches The BM85 power should be set off at this time Switches are located on the BMB85 rear panel Figure 10 shows the switch positions and setup NW BM85 000 Pv02 or earlier USE RIGHT SWITCHES 12345678 HERARANA SWITCH POSITION 12345678 Ud PORT MODE CONFIGURE UP RUN DOWN CONFIGURATION PORT
28. error detection method in which a sending station computes a mathematical value derived from the frame s contents and sends it as an HDLC field in the frame The receiving station recomputes the value as it receives the frame and compares it to the received value If the two values are equal the frame is assumed to have been received without error data frame An LLC frame containing data to be transferred between devices Data Link Layer In the OSI model the layer that provides services for transferring frames of data between nodes of a network Defined by the IEEE 802 2 standard At this layer a sending device assembles data into a message packet with addresses and information for error checking handles tokens for accessing the network and sends the packet to the Physical Layer for transmission Its two logical entities are the MAC and LLC sublayers See MAC and LLC 31007492 31007492 DIO See Distributed I O DIO Drop Adapter See DIO Adapter Distributed I O A Modbus Plus network that consists of hardware components that are specifically designed for high speed control of Input Output devices at remote sites in an industrial process Each DIO network has one Programmable Controller or one Modbus Plus Network Option Module that operates as the master controlling node on the network The DIO network also has one or more DIO Adapters placed at the remote plant sites Up to 64 nodes can be present on each DIO network exchan
29. processor in the user application The unit can locally manage processes at its serial ports 31007492 6 Introducing the BM85 Bridge Multiplexers 31007492 initiating or responding to Modbus Plus messages as needed for higher level status reporting and control Library functions are provided in the BM85 development software for creating multiple tasks within the BM85 s application program and for assigning and arbitrating the tasks MODBUS PLUS E BM85 BRIDGE NOTE 2 aici CONTROLLER 123 4 DISPLAY BARCODE NoE READER MODBUS NOTE 3 SCALE DEVICE Figure 2 BM85 With Typical RS232 485 Devices Figure 2 summarizes the typical layout of devices at the serial ports Notes 1 RS232 or RS485 compatible devices are required for the respective BM85 models RS232 and RS485 devices cannot be mixed on the same BM85 2 Incoming outgoing access to devices in the application is defined by the BM85 s internal code programmed by the user and downloaded to the BM85 across Modbus Plus 3 Modbus master or slave devices can be used if the user defined code includes a Modbus protocol handler Introducing the BM85 Bridge Multiplexers 7 1 4 Configuring the Programmable Models Developing the Application When you configure the custom programmable models you must develop the entire BM85 application as a file and then download it into the BM85 This includes the opera
30. range 1 64 the message is routed out on Modbus Plus If the first byte is zero the message goes to a Modbus port 1 4 specified in byte two If that port has a single slave device the remaining three bytes are zeros If the port has a network of slave devices byte three specifies the slave address 255 IMPLICIT ATTACH ADDRESS 80 79 NOTE RESERVED 75 ALL ADDRESSES 65 79 74 MUX ATTACH ARE RESERVED AT ANY 71 ADDRESS PORT CONFIGURED IN THE 70 RESERVED SILENT MASTER MODE 65 64 DIRECT ATTACH ADDRESS 1 0 RESERVED Figure 7 Bridge Multiplexer Address Conversion 20 Device Addressing and Message Routing 31007492 31007492 If a match is not found in the table conversion proceeds as in Figure 7 If the address is in the range 1 64 Direct Attach Address the message is routed to the specific node address 1 64 on the local Modbus Plus network If the address is in the range 71 74 MUX Attach Address the message is routed to a single device at one of the local Modbus ports Addresses 71 74 specify ports 1 4 respectively If the address is in the range 80 255 Implicit Attach Address it will be divided by 10 within the BM85 The quotient and remainder of the division will become the first two bytes of the five byte routing path This method allows two levels of Modbus Plus addressing the quotient byte specifies a Bridge Plus address on the local network and th
31. the BM85 into a routing path using the methods described below The resulting path can be either to the Modbus Plus network or to a single slave device connected to another Modbus port of the Bridge Multiplexer Address Range 1 64 If the message contains an address in the range 1 64 decimal it will be sent to the Modbus Plus node at that address on the local Modbus Plus network For example if the message contains Modbus address 8 it will be sent to the Modbus Plus device at node 8 Configuring the Modbus Models 37 Address Range 65 70 These addresses are reserved and must not be used Address Range 71 74 If the message contains an address in the range 71 74 it will be addressed to a single Modbus slave device at one of the BM85 Modbus ports Addresses 71 74 specify ports 1 4 respectively For example if the message contains address 74 it will be routed to the device at port 4 Each of the addresses 71 74 specifies only a single port and cannot be used to address a Modbus network of devices at a port To address a device on a Modbus network the Modbus Address Map table must be used Address Range 75 79 These addresses are reserved and must not be used Address Range 80 255 If the message contains an address in the range 80 255 it will be converted to a routing path as follows First the address will be divided by 10 The quotie
32. to the Modbus devices at its installation site before reapplying power 28 Configuring the Modbus Models 31007492 3 4 Modbus Port Parameters 3 4 1 Information You Will Need You will need the following information for each port that you will use in your application Parameters are explained in the sections indicated Port Type see Section 3 4 2 Modbus Master Modbus Slave Modbus Network Modbus Silent Master Network Slave Device Address see Section 3 4 3 1 247 Communication Parameters see Section 3 4 4 Baud Rate 50 19200 Stop Bits 1 or 2 Parity Mode Even Odd or None Communication Mode ASCII or RTU Note Models NW BM85C002 and NW BM85D008 do not have a Stop Bits setting These models default to 8 data bits with 1 Stop Bit Port Priority see Section 3 4 5 1 4 Link Timeout see Section 3 4 6 1 3000 multiples of 100 milliseconds Modem Booster see Section 3 4 7 Yes or No Modbus Plus Address Table see Section 3 4 8 A routing table with up to 64 entries for translating Modbus addresses to Modbus Plus network routing paths 31007492 Configuring the Modbus Models 29 30 3 4 2 Port Type Master A port to which a single Modbus master device such as an IBM PC or Modicon P230 Programmer is to be connected In Figure 9 port 1 is an example Slave A port to which a single Modbus slave device such as a programmable controller is to be connected In Figure 9 port 2 is an examp
33. 07492 Installing the BM85 73 5 2 Connecting the Power Cables See Sections 1 6 and 1 7 Specifications for details about the BM85 operating power and connector requirements A Caution You can connect power cables to the BM85 but ensure that the power is OFF before connecting the network or serial cables to the unit AC DC Models AC DC models are supplied with a power cable of 6 ft 2 m length for operation from 110 120 Vac or 220 240 Vac single phase power The cable connects to a socket on the rear panel Grounding is through the cable The ac line switch is located on the rear panel The BM85 contains an ac line fuse that is accessible on the rear panel All of these models except the BM85 000 can also operate from an external 24 Vdc source Power connects to a socket on the rear panel Grounding is through the cable The dc source must be switched and fused externally to the BM85 DC DC Models DC DC models operate from a 125 Vdc or 24 Vdc source Power connects to a terminal strip on the rear panel A grounding terminal is provided The dc source must be switched and fused externally to the BM85 5 2 1 Connecting AC Power Set the BM85 power switch to the 0 power OFF position Connect the BM85 to the power source Set the power switch to 1 power ON The unit s POWER indicator should illuminate Before connecting the network cables set the power switch to the 0 power OFF position The unit s POWER i
34. 85D008 NW BM85E232 NW BM85D002 NW BM85S232 Modbus RS232 Ports Pinout This section covers the serial ports pinout for the following models Mounting Method Panel or Shelf Panel or Shelf 19 in Rack Panel or Shelf 19 in Rack Panel or Shelf Operating Power Nominal 115 230 Vac 115 230 Vac or 24 Vdc 125 Vdc or 24 Vde 115 230 Vac or 24 Vdc 125 Vdc or 24 Vdc 115 230 Vac or 24 Vdc Modbus Plus Network Cable Single Single or Dual Single or Dual Single or Dual Single or Dual Single or Dual Serial Ports Modbus Modbus Modbus RS232 RS232 RS232 Serial Protocol ASCII or RTU ASCII or RTU ASCII or RTU Programmable User Defined Programmable User Defined Programmable User Defined 31007492 Figure 26 shows the pin configuration for the Modbus RS232 port connectors If you are fabricating cables for your application the panel connector is a type DB9S 54321 REAR PANEL SERIAL PORT 00000 CONNECTORS oooo 9876 Figure 26 Serial Ports Pinout Modbus RS232 Pin BM85 Direction Purpose 1 Chassis ground 2 In Receive data 3 Out Transmit data 4 Out Data Terminal Ready 5 Signal ground 6 In Data Set Ready 7 Out Request To Send 8 In Clear To Send 9 not used Compatible Devices and Cables 87 A 4 Part Number NW BM85E485 NW BM85S485 RS485 Ports Pinout This section covers the serial ports pinout for
35. Modbus Plus node address The other set allows you to either configure the unit or set it into its RUN mode Configuring the Modbus Port Models For the Modbus serial port models you configure the unit locally at a serial terminal connected to one of its ports Configuring the Programmable Port Models For the programmable models you create an application program externally to the BM85 and then download it to the unit across the Modbus Plus network Setting the RUN Mode When you have properly completed your configuration of the BM85 you can set it into its RUN mode for operation in your application Caution Do not connect the BM85 into your application environment unless you have set its internal configuration Do not connect it to your network or to any device unless you have set its switches properly for configuring or running Introducing the BM85 Bridge Multiplexers 5 1 3 Programmable Port Models Operating Modbus Plus Mounting Power Network Serial Serial Part Number Method Nominal Cable Ports Protocol NW BM85E232 Panel or Shelf 115 230 Vac or Single or Dual RS232 Programmable 24 Vdc User Defined NW BM85D002 19 in Rack 125 Vdc or Single or Dual RS232 Programmable 24 Vdc User Defined NW BM85E485 Panel or Shelf 115 230 Vac or Single or Dual RS485 Programmable 24 Vdc User Defined NW BM85S232 Panel or Shelf 115 230 Vac or Single or Dual RS232 Programmable 24 Vdc User Defined NW BM85S485 Panel or Shelf 115 230 Vac o
36. Modicon Modbus Plus Network BM85 Bridge Multiplexer User s Guide 890 USE 103 00 31007492 01 February 2007 Schneider Electric 31007492 Preface The data and illustrations found in this book are not binding We reserve the right to modify our products in line with our policy of continuous product development The information in this document is subject to change without notice and should not be construed as a commitment by Schneider Electric Schneider Electric assumes no responsibility for any errors that may appear in this document If you have any suggestions for improvements or amendments or have found errors in this publication please notify us by e mail at techcomm modicon com No part of this document may be reproduced in any form or by any means electronic or mechanical including photocopying without express written permission of the Publisher Schneider Electric Caution All pertinent state regional and local safety regulations must be observed when installing and using this product For reasons of safety and to assure compliance with documented system data repairs to components should be performed only by the manufacturer MODSOFT is a registered trademark of Schneider Electric The following are trademarks of Schneider Electric Modbus Modbus Plus BM85 SA85 Modicon 984 BP85 SM85 Borland is a trademark of Borland International Inc PROCOMM is a trademark of Datastorm Technologies Inc DIGITAL
37. NSI C37 90 1 2 2 1989 14 Introducing the BM85 Bridge Multiplexers 31007492 31007492 Network Connections All Models Single or dual cable network Serial Connections All Models Four DB9S Serial Parameters NW BM85D008 Modbus ASCII RTU protocol 300 19200 baud odd even no parity 1 or 2 stop bits NW BM85D002 User defined protocol RS232 50 19200 baud 1 7 2 Software Development Tool Kit Contact Modicon Customer Service Telephone 1 800 468 5342 North America 1 508 975 5001 International Part Number Description SR BM85 S00 BM85 Software Development Kit 3 5 in and 5 25 in HD disks Documentation 90 day Technical Support SR BM85 SOR BM85 Software Technical Support Renewal 1 7 3 Development Requirement Supplied by Customer Development System IBM PC AT Compatible 486 or higher recommended to support Development Environment Development Environment Borland C C Compiler version 3 1 or higher BM85 applications use Large model Download System IBM PC AT Compatible host with SA85 Adapter or IBM Micro Channel host with SM85 Adapter 486 or higher recommended 4 MB RAM minimum Introducing the BM85 Bridge Multiplexers 15 Chapter 2 Device Addressing and Message Routing Modbus Plus Message Routing Paths Modbus Address Conversion Routing Examples 31007492 Device Addressing and Message Routing 17 2 1 Modbus Plus
38. PU A Primary 24 8 0 0 50 24 5 50 0 If Masters A B and C are programming panels such as the Modicon P230 they can attach to various devices using Direct Implicit or MUX addressing or mapped routing From To Address Routing Method Master A CPU A Primary 8 Attach Direct 80000 Slave A 72 Attach MUX Internal Path CPUC 252 Attach Implicit 252 10 252000 50 50 Attach Mapped 035000 200 200 Attach Mapped 25 4 3 200 0 Master B CPUC 2 Attach Direct 20000 Slave B 72 Attach MUX Internal Path CPU A Primary 248 Attach Implicit 248 10 248000 200 200 Attach Mapped 0 3 20000 50 100 Attach Mapped 24 5 3 50 0 Master C CPU A Primary 248 Attach Implicit 248 10 248000 CPU B Standby 71 Attach Mapped 24 40000 Slave A 72 Attach Mapped 245200 Slave B 73 Attach Mapped 42000 150 74 Attach Mapped 43 15000 31007492 Device Addressing and Message Routing 23 Chapter 3 Configuring the Modbus Models Before You Start Required Equipment Configuration Checklist Modbus Port Parameters Configuring the Modbus Ports Your Configuration Commands Your Configuration Screens Your V1 Screen Your V2 and V3 Screens Your V4 Screen Setting the Modbus Plus Address Setting the RUN Mode Modbus Port Indicator Codes 31007492 Configuring the Modbus Models 25 3 1
39. a 1 parity 2 stop Serial communication time 12 bits 300 40 ms character 10 24 seconds x 2 20 48 s for 256 bytes 2 chars byte for ASCII Slave controller scan time 100 ms BM85 time 4 ms Total time 20 48 s 20 48 s 100 ms 4 ms 41 06 s Use a link timeout value of 450 45000 ms or 45 s Configuring the Modbus Models 33 3 4 7 Modem Booster How the Parameter Applies to the BM85 The Modem Booster applies to BM85 Modbus ports that will be configured as Network ports You will need this information for any port you will be using as a Modbus Network port The parameter does not apply to a port that is being configured as a single Master or Slave device port You can bypass the information below for any port you will be using as a single Master or Slave port The Purpose of the Parameter The Modem Booster parameter determines how the BM85 will handle Modbus commands to networked slave devices at a Modbus port When the BM85 receives a command that is addressed to a slave device at a Modbus network port a response is expected from the slave device Two methods are available for handling the response defined by the function code in the command issued by the master The two kinds of commands are Suspend Transactions Function Code 126 With this type of command the slave device will send a response after it completes the action requested in the command The master device waits for the response
40. ables Compatible Devices and Cables Modbus RS232 Cable Wiring Diagrams Modbus RS232 Ports Pinout RS485 Ports Pinout 31007492 Compatible Devices and Cables 83 A 1 A 1 1 A 1 2 Compatible Devices and Cables Abbreviations These abbreviations are used in the device and cable listing In the cable part numbers XXX indicates that a cable length option is available Contact your Modicon distributor for further information Modicon Devices and Cables Abbreviation Meaning J375 Modicon Micro 84 Modbus communication option J474 Modicon 484 Modbus communication option J478 Modicon Modbus network option W190 Modicon 584 Modbus cable assembly AS W190 XXX W807 Modicon 884 Modbus cable assembly AS W807 XXX W952 Modicon 984 680 to IBM AT cable assembly AS W952 XXX W953 Modicon 984 680 to P230 cable assembly AS W953 XXX W978 Modicon 984 to Modbus modem cable assembly AS W978 XXX Cable Adapters Abbreviation Meaning Equivalent Part 9M9M 9 pin male to 9 pin male Jameco GC9M 25F9M 25 pin female to 9 pin male Jameco AD926 25F25F 25 pin female to 25 pin female Jameco GC25F X25F9M 25 pin female to 9 pin male Jameco AD926 modified remove connection between female pin 8 and male pin 1 Adapters are available from Jameco Electronics 1355 Shoreway Road Belmont CA 94002 Telephone 415 592 8097 Making Quick Connections The Modbus Plus inline conne
41. alent key to print the hard copy Configuring the Modbus Models 27 3 3 Configuration Checklist You have a specific sequence of actions for configuring your BM85 Use these items as your checklist 1 Select a terminal and cable Refer to Appendix A for a listing of compatible terminal devices and cables Select a terminal and cable that you will use for the configuration 2 Determine the Modbus port parameters Refer to Section 3 4 Modbus Port Parameters Determine the parameters you want to use for each Modbus port Port Type O Slave Device Address o Communication Parameters O Port Priority Link Timeout Modem Booster Modbus Plus Address Table 3 Configure the Modbus ports Turn off all power to the BM85 Refer to Section 3 5 Configuring the Modbus Ports Connect your terminal to the port you will use for configuration Start your terminal and any emulation program you are using Set the switches to allow the configuration and power up the BM85 Use the configuration screens and keyboard to configure the unit 4 Set the Modbus Plus address Refer to Section 3 11 Setting the Modbus Plus Address Set the BM85 rear panel address switches to its node address on your Modbus Plus network 5 Set the RUN Mode Refer to Section 3 12 Setting the RUN Mode Turn off all power to the BM85 Set its rear panel switch to the RUN mode Connect the unit to the Modbus Plus network and
42. an use as examples 4 3 1 Development Software Files The following BM85 development files are supplied File Name Purpose README DOC Complete BM85 development information text file View or print this file for current information about your software BM85LOAD EXE The BM85 download utility MBPSTIM EXE Data transfer exerciser Reads registers and writes a single register to a controller over Modbus Plus BM85 EXE User compiled demonstration program to be downloaded See the descriptions of the test programs below BM85 PRJ Borland C 3 1 project file to build BM85 EXE BM85 H Header file containing function prototypes of utility routines COBM85 OBJ BM85 startup code BM85 C Source file for user base demonstration program Copy the source for a specific test program into this file and compile it Initially supplied as TESTO C See the test programs below BM85LIB LIB Library of utility routines MBPHOST SYS Device driver for Modbus Plus network adapter MBPSTATEXE Modbus Plus network management and diagnostic utility BDRESET EXE Initializes and enables the Modbus Plus adapter 4 3 2 The README DOC Information File Your disks contain an information text file README DOC This file contains detailed information about developing compiling and downloading your BM85 application using the Borland environment It also contains any recently updated information about your BM85 software Before installing the software
43. cable path the other path continues normally The MODBUS PLUS indicator flashes repetitive patterns to show the BM85 node s communication status on the Modbus Plus network The patterns are Six Flashes per Second This is the BM85 node s normal operating state All nodes on the network should be flashing this pattern If the indicator is OFF continuously the BM85 is not transmitting on the network One Flash per Second The BM85 node is offline after just being powered up or after hearing a message from another node with the same network address duplicate addresses are not allowed In this state the node monitors the network and builds a table of active nodes It remains in this state for five seconds then attempts to go to its normal operating state Two Flashes then OFF for Two Seconds The BM85 node is hearing the token being passed among other nodes but is never receiving the token Check the network link for an open or short circuit or defective termination Three Flashes then OFF for 1 7 Seconds The BM85 node is not hearing any other nodes It is claiming the token but finding no other node to which to pass it Check the network link for an open or short circuit or defective termination Four Flashes then OFF for 1 4 Seconds The BM85 node has heard a valid message from another node that is using the same address as this node The BM85 node remains offline in this state as long as it continues to hear the duplicat
44. cal V4 Screen Save or Initialize the Configuration 50 Configuring the Modbus Models 31007492 3 10 2 Using the V4 Screen To write save the configuration you have entered into the BM85 enter the following command W lt ENTER gt To initialize the entire set of configuration parameters in the BM85 to their default values enter the following command D lt ENTER gt Note that initializing the configuration parameters also clears the Modbus Address Map tables for all four ports to zeros 31007492 Configuring the Modbus Models 51 52 3 11 Before applying power to the BM85 set its rear panel switches to the Setting the Modbus Plus Address unit s Modbus Plus node address Figure 14 shows the switch locations combinations and addresses Set the address into switches 1 6 Switches 7 and 8 are not used PVO2 or earlier NW BM85 000 USE LEFT SWITCHES ADDRESS ANOaARWND Figure 14 BM85 Modbus Models Modbus Plus Address Switches Configuring the Modbus Models 1 or o 0 0 0 0 0 0 00 00 0 0 0 0 0 0 12345678 LOWER SWITCHES SWITCH POSITION 2 Jo o Onn Olona OO OlOn ONO a a aae 3 miolo olo ttt O lolo ol Tolo o o tt tO ololo 4 44444440 00000004444444400000000 5 O cada EEE e A eE OC Ore O10 CO O O OO CO OO OO E A S O E A O O O E E a S A PVO3 or greater NW BM85 000 NW BM85C002 NW BM85D008 UP DOWN SWITCH
45. cation both on the Modbus Plus network and at its serial ports If you are installing a BM85 that was previously configured for another application another network or a different node the unit will still be retaining its previous configuration setup You must not connect the unit into the current application and apply operating power to the unit until you have reconfigured it for the current application 26 Configuring the Modbus Models 31007492 31007492 3 2 Required Equipment To configure the Modbus port parameters you will need either of the following devices DEC VT100 or equivalent terminal with a compatible serial cable IBM AT or XT or equivalent computer product running a VT100 terminal emulation program such as PROCOMM PLUS with a compatible serial cable A listing of compatible terminals and cables is provided in Appendix A Some terminal emulation programs such as PROCOMM PLUS allow you to store the keystrokes you use into a script file on your disk This allows you to duplicate your future configurations from the disk without having to key in the parameters Refer to the documents for your emulation program for further details If you have a printing terminal or a printer connected to your emulator you can print a hard copy record of your BM85 configuration This will be helpful in documenting your configuration Typically you can use your terminal s Print Screen or equiv
46. cilitates the design of time critical applications in which each network employs only the devices required for the local process 1 1 2 The BM85 on Modbus Plus The BM85 Bridge Multiplexer operates as a Modbus Plus node and provides four serial ports that you can configure separately for serial devices in your application BM85 models are available for single cable or dual cable Modbus Plus networks and for support of RS232 RS485 or Modicon Modbus serial devices Figure 1 shows a block diagram of two Modbus Plus networks joined through a BP85 Bridge Plus Serial devices communicate with the application through the BM85 Bridge Multiplexers 2 Introducing the BM85 Bridge Multiplexers 31007492 MODBUS PLUS NETWORK U PROGRAMMABLE PROGRAMMABLE CONTROLLER CONTROLLER TO MODBUS PLUS NETWORK OTHER lt lt A NODES BM85 HOST DEVICE BRIDGE NETWORK MULTIPLEXER ADAPTER BM85 BRIDGE MULTIPLEXER HOST COMPUTER RS232 OR RS485 MODBUS MASTER SLAVE SERIAL DEVICES OR NETWORKED DEVICES Figure 1 BM85 Bridge Multiplexers on Modbus Plus Depending on the BM85 model and the types of devices connected at its ports serial port devices can communicate with Devices at the same serial port Devices at other serial ports on the same BM85 Node devices on the Modbus Plus network Devices at serial ports on other BM85s acro
47. ctor Modicon part AS MBKT 085 is suitable for making simple single twisted pair plus shield connections at a BM85 serial port Do not use a Modbus Plus terminating connector AS MBKT 185 in a serial cable application Compatible Devices and Cables 31007492 31007492 A 1 3 Devices and Cables for Configuring Modbus Ports Following is a listing of compatible devices and cables that can be used for configuring the ports on the BM85 Modbus models Use of an IBM AT or XT computer requires a VT100 terminal emulation program such as PROCOMM PLUS or equivalent For further information contact Datastorm Technologies Inc 1621 Towne Drive Columbia MD 65202 Telephone Device DEC VT100 direct DEC VT100 modem IBM AT direct IBM AT modem IBM XT direct IBM XT modem 314 474 8461 Cable and Adapter Combination BM85 W953 25F25F VT100 BM85 25F9M W978 modem modem VT100 BM85 W952 IBM AT BM85 25F9M W978 modem modem IBM AT BM85 W953 25F25F IBM XT BM85 25F9M W978 modem modem IBM XT W978 25F25F W978 25F9F W978 25F25F A 1 4 Cables for Modbus Master Devices Device P230 direct P230 modem P965 IBM AT IBM XT Modvue DEC VAX Cable and Adapter Combination BM85 W953 P230 BM85 25F9M W978 J478 J478 P230 BM85 25F9M P965 BM85
48. dbus network with one master device and one or more slave devices The master device can access devices on the same port on other ports at the same BM85 and devices across Modbus Plus The slave devices are accessible only to the Master on the same port 31007492 Introducing the BM85 Bridge Multiplexers 11 12 1 6 Specifications AC DC Power Models 1 6 1 Bridge Multiplexer Models for AC DC Power Description Name BM85 Modbus Plus Bridge Multiplexer Part Number NW BM85 000 NW BM85C002 NW BM85E232 NW BM85S232 NW BM85E485 NW BM85S485 Mounting Method Horizontal Surface Platform or shelf with included mounting brackets Vertical Surface Panel with included mounting brackets Physical Characteristics Height 2 59 in 66 mm Width 11 50 in 292 mm unit only 14 08 in 358 mm with mounting brackets Depth 8 30 in 211 mm Weight 5 5 Ibs 2 5 kg net 6 5 Ibs 3 0 kg shipping AC Power All AC DC Models Requirements 115 230 Vac 15 47 63 Hz 10W Access Rear panel power connector with ON OFF switch Fuse 1 0 A 3 AG SB internal DC Power not available on NW BM85 000 Requirements 24 Vdc 15 10 W Access Rear panel power connector Fuse 1 0 A external customer supplied Environmental Temperature O 60 degrees C operating 40 80 degrees C storage Humidity O 95 non condensing Altitude 10 000 ft 3 km max
49. e 1 9600 1 Even RTU 2 600 Port 3 Slave 1 9600 1 Even RTU 3 600 Port 4 Slave 1 9600 1 Even RTU 4 600 The Modbus Address Map tables for all four ports will be set to zeros Configuring the Modbus Models 43 3 7 Your Configuration Screens You have four configuration screens v1 Use this screen to display and set the communication parameters for each port V2 Use this screen to display and set locations 1 32 of the Modbus Address Map table for each port V3 Use this screen to display and set locations 33 64 of the Modbus Address Map table for each port V4 Use this screen to Save or Initialize the BM85 configuration Help Screens V5 V6 V7 V8 You have four Help screens that you can access during configuration You can select the Help screens by selecting screens V5 V6 V7 or V8 Pressing the question mark key will display Help for the configuration screen you are currently using 3 7 1 Entering Commands Into Your Screens When the BM85 is initially powered up for configuration the V1 screen is shown for port 1 You can begin entering the port 1 parameters immediately The currently active port is always shown at the bottom line of your screen To select another screen for the active port enter commands V1 V2 V3 or V4 To select another port enter commands P1 P2 P3 or P4 When you enter the configuration commands you can enter them singly or a
50. e The actions taken if a match is found or if a match is not found are described below and on the following pages If a Match is Found If a match is found the five bytes of mapped routing from the table entry will be applied to the message and it will be sent out using that routing Here are five examples of how the Modbus Address Map table can be used to develop routing paths for Modbus messages Table Location Modbus Address Five Byte Routing Path 01 47 80000 02 182 20 14000 03 27 20 22 5 00 04 33 03000 05 125 049900 Entry 01 is an example of routing to node 8 on the local Modbus Plus network If the Modbus message contains the destination address 47 a match is found in the table The BM85 will apply the routing path 8 0 0 0 0 to the message The message is acted upon by the application program in the device at node address 8 36 Configuring the Modbus Models 31007492 31007492 Entry 02 is an example of routing through a Bridge Plus to a programmable controller at node address 14 on a second network Finding a match for Modbus address 182 the BM85 applies the routing path 20 14 0 0 0 to the message It will be sent to node 20 on the current Modbus Plus network a Bridge Plus It will be routed through the bridge to node 14 on the second network Entry 03 shows how the type of device at the destination can determine the routing of a message Finding a match for Modbus addr
51. e remainder byte specifies the destination node on the second network The final three bytes in the routing path will always be zeros Silent Master Port Addressing A Modbus port can be configured as a Silent Master network port In this configuration one Modbus master device and one or more slave devices can be connected to the port The master device can address its own network s slave devices directly It can also address devices at other ports on the same BM85 or devices across Modbus Plus Special considerations are needed for addressing in this configuration The intent is to avoid address conflicts between slave addresses at the local port and other addresses that may exist elsewhere The slave devices on the Silent Master port must have unique addresses They must not be the same as a node address 1 64 on the BM85 s local Modbus Plus network They must also not exist as entries in the address mapping table stored within the BM85 The Modbus addresses in the master s queries to the slave devices must not map beyond the Silent Master port neither to any routing on Modbus Plus nor to another port on the BM85 Note Reserved addresses are not to be used in user applications When the port is configured as a Master port addresses 65 70 and 75 79 are reserved Addresses 71 74 are available for use When the port is configured as a Silent Master port addresses 65 79 are reserved The Bridge Multiplexe
52. e Modbus Plus cable to the BM85 Modbus Plus connector Connecting Dual Network Cables On dual cable networks connect Modbus Plus cables A and B to the correct connectors on the BM85 rear panel Make sure to identify the correct cables and connectors Connecting Dual Cable Units on Single Cable Networks If you are installing a dual cable unit on a network that has only a single cable connect the cable to the rear panel CHANNEL A connector Plug a Terminating Connector Modicon part number AS MBKT 185 into the CHANNEL B connector Connecting Serial Port Cables Connect the serial port device cables to the four connectors on the rear panel Make sure to identify the correct device cables and connectors Installing the BM85 77 5 4 BM85 000 BM85C BM85E232 BM85S232 BM85E485 BM85S485 BM85D002 BM85D008 5 4 1 5 4 2 Reading the Indicators The layout of the BM85 indicators is shown below Modbus Modbus Modbus Modbus Modbus Power Ready Port 4 Port 3 Port 2 Port 1 Plus ON Port power ok Modbus error error Modbus Modbus Modbus Modbus Plus Chan A Chan B port 1 port2 port3 port 4 power ok Modbus error error RS232 RS232 RS232 RS232 Plus Chan A Chan B port 1 port2 port 3 port 4 O O O O O O O O power ok Modbus error error RS485 RS485 RS485 RS485 Plus Chan A Chan B port 1 port2 port 3 port 4 RS232 RS232 RS232 RS232 error error Modbus power ok port 4 port 3 port2 port 1 Chan B Chan A Plus O O O O O O O O
53. e address If the duplicate address is not heard for five seconds the node then changes to the pattern of one flash every second Installing the BM85 79 5 5 Attaching Identification Labels Labels aresupplied withthe BM85 for recording theunit s setup parameters Use these labels to provide ready information for persons who will maintain the BM85 in the future Before completing the BM85 installation enter the required information on the labels and attach them to the BM85 Place the labels on the unit in positions where they can be easily seen 5 5 1 Modbus Plus Port Label On this label enter the Modbus Plus network number and node address you have assigned to the BM85 Place the label on the BM85 so that it can readily identify the unit in your application Figure 23 shows the layout of the label Modbus Plus P Network ME ccc Figure 23 Modbus Plus Port Label 80 Installing the BM85 31007492 5 5 2 Serial Port Parameters Label On this label enter the parameters you are using at each of the serial ports Place the label on the BM85 so that it can readily identify the parameters in your application Figure 24 shows the layout of the label MODBUS MASTER NTWK SLAVE ADDRESS ASCII RTU BAUD RATE STOP BITS PARITY TIMEOUT 100 S ms MODEM BOOSTER Figure 24 Serial Port Parameters Label 31007492 Installing the BM85 81 Appendix A Compatible Devices and C
54. e port If the command is function code 126 the slave response will be returned to the originator of the Modbus command after the slave has completed the requested action or when it returns an exception response indicating that it cannot complete the action Selecting Yes causes the second type of response function code 13 to be used If the command specifies function code 126 the BM85 will perform a conversion to function code 13 before sending the command to the slave device The BM85 will then automatically handle the polling of the slave device until the command action is completed It will return the final response to the originator of the command The polling process is handled by the BM85 transparently to the originator Modem Booster Example A P230 programming panel connected to a Modbus Plus networked controller can access a slave controller that is part of a Modbus network at a BM85 port The P230 panel can remotely interrogate program and start the slave controller If the Modem Booster parameter is set the P230 can issue a command with function code 126 The BM85 converts the function code and sends the converted command to the slave The BM85 then handles polling of the slave returning a response to the P230 when the slave device s action is completed To the originating device the response appears as the one from the slave for function code 126 During this time however normal network transactions can continue
55. e value should accommodate the sum of the following serial communication time slave device processing time for example controller scan time BM85 processing time for port transactions approximately 4 ms Setting the Parameter You set each port s timeout parameter as a value in the range 1 3000 The timeout value represents multiples of 100 milliseconds For example a parameter of 10 specifies a link timeout of 10 x 100 ms or one second Configuring the Modbus Models 31007492 31007492 Timeout Examples Here are some examples for setting the link timeout value Each is based on a Modbus message transaction of 256 bytes to the port device and 256 bytes from the device Parameters RTU 9600 baud 1 start 8 data no parity 1 stop Serial communication time 10 bits 9600 1 04 ms character 267 ms for 256 bytes RTU mode sends one character per byte Slave controller scan time 100 ms BM85 time 4 ms Total time 267 267 100 4 638 ms Use a link timeout value of 10 1000 ms Parameters ASCII 9600 baud 1 start 8 data 1 parity 1 stop Serial communication time 11 bits 9600 1 15 ms character 294 ms x 2 588 ms for 256 bytes 2 chars byte for ASCII Slave controller scan time 100 ms BM85 time 4 ms Total time 588 588 100 4 1280 ms Use a link timeout value of 15 1500 ms Parameters ASCII 300 baud 1 start 8 dat
56. ended with at least 4 Megabytes of RAM The required equipment is described in the BM85 Specifications Section 1 7 3 Your download host can be the same PC you used for the application development with the addition of a Modicon SA85 or SM85 Network Adapter The host could also be a separate PC node on Modbus Plus in which you have stored only the application and downloader software You might find it more convenient for developing and debugging your application if you use the same PC for downloading Downloading can be performed from within the Borland development environment The SA85 connects an ISA AT bus host to Modbus Plus The SM85 connects a Microchannel bus host Each adapter includes a device driver program that you will install during your installation of the adapter into your host computer Your BM85 development software includes a download utility that you can run with either the SA85 or SM85 Configuring the Programmable Models 59 4 3 Overview of the Development Software This overview of the BM85 Program Development Software Tool Kit is provided to assist your planning Examples are shown for the Borland 3 1 environment Complete documentation is supplied with the kit Part numbers and ordering information are in the BM85 Specifications Section 1 7 2 Your BM85 software includes all of the development files for compiling and downloading your application You also have an assortment of source code files that you c
57. ers The termination is effective when the jumpers are installed The tap at each of the two ends of the cable section has its terminating jumpers installed The tap at each inline point has them removed See section token In data transmission a frame passed on a network that gives a networked device the current authority to transmit token bus A network access method between two or more devices in which the procedure for sending data is based upon the passing of a token for access to the network See token transaction The complete and successful transfer of a message between networked devices trunk The main element of the cable system that interconnects the network nodes On Modbus Plus the trunk cable runs directly between pairs of taps 31007492 Glossary 97 Index A addressing examples 22 Modbus address conversion 20 36 on Modbus Plus 18 B BM85 available models 4 introduction 2 Modbus port models 10 programmable models 6 specifications 12 14 C cables for serial ports 84 network connections 76 power connections 74 serial port connections 76 wiring diagrams 86 configuration configuration overview 5 development software availability 9 description 60 installing 62 part numbers 13 15 README DOC file 60 downloading to BM85 64 Modbus port models 26 28 40 commands 42 Communications parameters 31 configuration overview 26 default settings 43 devices and cables 84 Link T
58. ess 27 the BM85 applies the routing path 20 22 5 0 0 to the message The message is sent to node 20 on the current network a Bridge Plus The message is routed through the bridge to node 22 on the next network The type of device at node 22 determines how further routing is applied If node 22 is another Bridge Plus the message is routed to node 5 on a third network If node 22 is an SA85 or SM85 Network Adapter the message is accepted by the adapter and posted to application task 5 running in the adapter Entry 04 shows routing to a single slave device on another port of the same BM85 Finding a match for Modbus address 33 the BM85 will apply the routing path 0 3 0 0 O to the message The zero in the first byte specifies internal routing to another Modbus port The second byte specifies port 3 Port 3 must have only a single slave device connected as the remaining bytes are zeros Entry 05 shows routing to a networked slave device on another port of the same BM85 If the Modbus message contains an address of 125 the routing path 0 4 99 0 0 is applied The zero in the first byte specifies internal routing to another Modbus port The second byte specifies port 4 The third byte specifies slave device address 99 on the network at that port The remaining bytes must contain zeros If a Match is Not Found If an address match is not found in the table the Modbus address in the message will be converted by
59. ess for the following models Operating Modbus Plus Mounting Power Network Serial Serial Part Number Method Nominal Cable Ports Protocol NW BM85E232 Panel or Shelf 115 230 Vac or Single or Dual RS232 Programmable 24 Vdc User Defined NW BM85D002 19 in Rack 125 Vdc or Single or Dual RS232 Programmable 24 Vdc User Defined NW BM85E485 Panel or Shelf 115 230 Vac or Single or Dual RS485 Programmable 24 Vdc User Defined NW BM85S232 Panel or Shelf 115 230 Vac or Single or Dual RS232 Programmable 24 Vdc User Defined NW BM85S485 Panel or Shelf 115 230 Vac or Single or Dual RS485 Programmable 24 Vdc User Defined An Overview of the Configuration Process The BM85 requires an internal program for controlling its operation with parameters for each serial port you will use in your application The unit contains a non volatile memory that stores your program and port configurations even when operating power is removed You must create your BM85 application program and download it across the Modbus Plus network to the BM85 A switch is provided on the BM85 to enable the unit to accept the download If the unit is already installed at its site and connected to the network you can download your program to it You can also download your program at a spare network connection near your download host then transport the configured BM85 to the site and install it A Caution You must complete the internal configuration of t
60. from each of up to 64 source nodes up to a maximum total of 500 words Nodes can be configured to accept or ignore incoming data from specific source nodes Specific Output A type of data output sent by a node using Peer Cop data transfers Nodes using Peer Cop can be configured to send up to 32 16 bit words of Specific Output data to each of up to 64 destination nodes up to a maximum total of 500 words splitter A passive device that allows a cable to be routed into multiple paths with essentially equal signal amplitude in each path Not used with Modbus Plus start delimiter A field that defines the start of a frame occurring after the signal has been detected and synchronized by the receiving node See end delimiter 31007492 system A set of hardware devices and their associated software capable of performing the functions of information processing and device control without significant dependence on other equipment tap A passive electrical device that joins segments of the trunk cable or terminates the trunk cable at its two end sites It also provides a connection for the drop cable to the node device at the tap site See terminator terminator A resistive load placed at the end of a cable to prevent data signals from reflecting back into the data path The signals are terminated with the same impedance as the characteristic impedance of cable system On Modbus Plus each tap contains a terminating resistor with two jump
61. g figures Figure 19 BM85 000 Figure 20 BM85C E S Figure 21 BM85D Read the Cautions below before connecting any cable to the BM85 After connecting each cable secure the connection by tightening its two screws A Caution If you are connecting the unit to the network for the purpose of communicating in your application you must first ensure that you have set the unit s internal configuration for the specific site at which you are installing the unit If you have not done this you must first configure the unit as described in this guidebook If you are connecting the unit to the network for the purpose of downloading its configuration from your host computer you must set the unit s rear panel switches for downloading You must do this before connecting the network cables and before applying operating power to the unit A Caution If the network is active communication between the devices on the network will be affected as you connect the BM85 to the network Before connecting any device on an active network you should know the affect of connecting that device A Caution If the cables at the installation site are not labeled or if you do not have a layout diagram showing how to connect the cables obtain that information before proceeding 76 Installing the BM85 31007492 31007492 5 3 1 5 3 2 5 3 3 5 3 4 Connecting a Single Network Cable On single cable networks connect th
62. ging messages during the passing of token frames download The transfer of a program from one device to another for execution drop cable A cable used to connect a networked node device to a tap on the trunk cable Drop cables are available in various lengths from Modicon See tap duplicate frame A frame received twice because an acknowledgement was lost end delimiter A field that defines the end of a message EIA Electronic Industries Association field A logical grouping of contiguous bits that convey one kind of information such as the start or end of a message an address data or an error check frame A logical grouping of contiguous bits for transmission a message frame check sequence A code that is used to determine whether a frame was received correctly Glossary 91 92 Glossary frame descriptor A part of the host computer s buffer structure that links transmitted or received data frames to appropriate priority queues Frame Descriptors contain MAC frame parameters frame status and pointers Global Input A type of data input received by a node using Peer Cop data transfers Nodes using Peer Cop can be configured to receive up to 32 16 bit words of Global Input data from each of up to 64 source nodes up to a maximum total of 500 words Incoming data from each source node can be indexed into up to eight fields for delivery into separate data destinations in the receiving node Global Output
63. he BM85 before making the unit active in your application both on the Modbus Plus network and at its serial ports If you are installing a BM85 that was previously configured for another application another network or different node the unit will still be retaining its previous configuration setup You must not connect the unit into the current application and apply operating power to the unit until you have reconfigured it for the current application 31007492 58 Configuring the Programmable Models 31007492 4 2 4 2 1 4 2 2 Required Equipment Equipment for Writing the Application Program First you must create your BM85 application program For this you will need the BM85 Program Development Software Tool Kit Part numbers and ordering information are provided in the BM85 Specifications Section 1 7 2 For compatibility with the BM85 development software your PC hardware should be an MS DOS compatible platform with at least 4 Megabytes of RAM You will also need the Borland C C compiler at version 3 1 or later which should already be installed in your development computer The BM85 applications use the Large model You should ensure that the Borland Large model libraries are installed Equipment For Downloading the Application Program After you create the BM85 application you must download it to the BM85 across Modbus Plus Your hardware should be an IBM AT compatible or Micro Channel PC 486 or higher recomm
64. ifications DC DC Power Models 00 cece eee eee 14 1 7 1 Bridge Multiplexer Models for DC DC Power 14 1 7 2 Software Development Tool Kit 05 15 1 7 3 Development Requirement Supplied by Customer 15 Chapter 2 Device Addressing and Message Routing 17 2 1 Modbus Plus Message Routing Paths 00 cece eee eee 18 2 1 1 Routing to Programmable Controllers 18 2 1 2 Routing to Host Based Network Adapters 19 2 1 3 Routing to BM85 Bridge Multiplexers 19 2 2 Modbus Address Conversion 000s cece e cette teenies 20 23 Routing Examples usas espa mea suk sea Daan Ed aa o sabes 22 Contents v Chapter 3 Configuring the Modbus Models 25 3 1 Before You Sart cores or rta serasa aaa awa a a ae 26 3 1 1 Models Covered in This Chapter 000005 26 3 1 2 An Overview of the Configuration Process 26 3 2 Required Equipment A ccc cece nee ene i 27 3 3 Configuration Checklist 0 0 e eens 28 3 4 Modbus Port Parameters 0 0 ccc cect nee n eee nen eeee 29 3 4 1 Information You Will Need 0 00 cece eee eens 29 3 4 2 Port Type asse hia ea daa bade has 30 3 4 3 Slave Device Address 00 0 cece cece cence ne nes 31 3 4 4 Communication Parameters 0 0 c cece eee ees 31 3 4 5 Port Priority
65. igured to extract data from them Nodes are setup for Peer Cop transfers as part of their initial configuration and continue using Peer Cop as long as they are active on the network Four kinds of Peer Cop communication can be transacted during each token pass see Global Input Global Output Specific Input and Specific Output 31007492 31007492 peer to peer communication A communication between networked devices in which any device can initiate data transfer The method used by devices conforming to the OSI Model Also the method used on Modbus Plus Physical Layer In the OSI model the layer that provides the physical connection and signalling means between nodes of a network Defined by the IEEE 802 4 standard port The external connector on a device at which the network cable is attached protocol A set of rules used mutually by two or more devices to communicate Repeater A Modicon device that interconnects two sections of a Modbus Plus network routing path In Modbus Plus the sequence of device node addresses through which a message will be routed to its final destination routing path field In a Modbus Plus message frame a group of five bytes that specify the addresses of the devices in the message routing path RS232 An EIA standard that defines signal requirements and cable connections for serial data communications characterized by single wires for transmitted data and received data RS485 An EIA standa
66. imeout parameter 32 Modbus Address Map 36 Modem Booster parameter 34 port parameters 29 Port Priority parameter 31 31007492 Port Type parameter 30 RUN mode 53 Slave Device Address parameter 31 programmable models 58 configuration overview 8 58 RUN mode 68 required equipment for Modbus port models 27 for programmable models 13 15 59 D development software see configuration dimensions rack mounted models 73 shelf panel models 72 downloading error codes 67 normal indications 67 preparing the BM85 64 E error codes Modbus port models 54 programmable port models 67 F front top view rack mount models 73 shelf panel mount models 72 l indicators 78 Modbus and Serial Port status 78 Modbus Plus network status 79 Power and Ready status 78 L labels for port identification 80 required for cables 76 Index 99 Modbus Plus communication overview 2 status indicators 79 Modbus Plus network routing paths 18 Modicon Customer Service 9 mounting methods 70 horizonal mounting 71 overview 4 rack mounted models 71 shelf panel models 70 vertical mounting 71 N network cables connecting 76 O operating power ac connections 74 connecting 74 connector layouts BM85 000 75 BM85C BM85E BM85S 75 BM85D 75 de connections 74 overview 5 overview BM85 models 4 P part numbers BM85 models 4 cables 84 development software 13 15 Index R rear
67. imum EMI Radiated MIL STD 461B RS03 Susceptibility EMI Conducted Susceptibility MIL STD 461B CS03 Network Connections NW BM85 000 Single cable network only NW BM85C002 NW BM85E232 NW BM858232 NW BM85E485 NW BM85S485 Single or dual cable network Introducing the BM85 Bridge Multiplexers 31007492 31007492 Serial Connections All Models Four DB9S Serial Parameters NW BM85 000 Modbus protocol ASCII RTU NW BM85C002 300 19200 baud odd even no parity 1 or 2 stop bits NW BM85E232 User defined protocol RS232 NW BM85S232 50 19200 baud NW BM85E485 User defined protocol RS485 NW BM85S485 50 19200 baud 1 6 2 Software Development Tool Kit Contact Modicon Customer Service Telephone 1 800 468 5342 North America 1 508 975 5001 International Part Number SR BM85 S00 SR BM85 SOR Description BM85 Software Development Kit 3 5 in and 5 25 in HD disks Documentation 90 day Technical Support BM85 Software Technical Support Renewal 1 6 3 Development Requirement Supplied by Customer Development System IBM PC AT Compatible 486 or higher recommended to support Development Environment Development Environment Borland C C Compiler version 3 1 or higher BM85 applications use Large model Download System IBM PC AT Compatible host with SA85 Adapter or IBM Micro Channel host with SM85 Adapter 486 or higher recommended 4 MB
68. ing In addition to the serial port configurations the BM85 s Modbus Plus node address must be assigned This is done in a set of hardware switches on the rear panel When the configuration has been completed the internal parameters will be retained by the BM85 after power is removed If the parameters are correct the unit can be transported to the installation site and installed there without reconfiguration 10 Introducing the BM85 Bridge Multiplexers 31007492 MODBUS PLUS BM85 BRIDGE CONTROLLER MULTIPLEXER 123 4 NOTE 1 MASTER NETWORK NOTE 2 SLAVE MASTER NETWORK NETWORK SLAVE SLAVE NOTE 4 50 150 NOTE 3 NETWORK NETWORK SLAVE SLAVE 100 200 Figure 3 BM85 With Typical Modbus Devices Figure 3 summarizes the typical layout of devices at the Modbus ports Notes 1 This is an example of a single Modbus master device The device can access devices on other ports at the same BM85 as well as devices across Modbus Plus 2 This is an example of a single Modbus slave device The device is accessible from devices on other ports at the same BM85 as well as from devices across Modbus Plus 3 This is an example of a Modbus network with multiple slave devices Any device on the port is accessible from devices on other ports at the same BM85 and from devices across Modbus Plus 4 This is an example of a Mo
69. ions 4 6 and 4 7 You can download to the BM85 at its installation site You might find it more convenient to have a spare Modbus Plus network connector in the vicinity of your download host and to perform the download locally Caution Adding a new node to an active network causes an increase in the network s token rotation time reducing the overall data throughput Before you connect or disconnect any device on an active network you should be aware of its effect on network timing After the download is completed the BM85 switches must be set to allow it to run the application All BM85 switch settings are sensed on power up Configuring the Programmable Models 31007492 31007492 4 6 Setting the Configuration Switches Before applying power to the BM85 set its rear panel switches to allow either downloading or running your application Figure 15 shows the switch locations and setup BM85 USE UPPER Te U UP SWITCHES D DOWN FRRERRRA X DON T CARE 12345678 ME SWITCH POSITION BM85 OPERATION tl 2 So do 5 rs USER DEFINED U RUN APPLICATION STORED IN BM85 SWITCHES 1 7 DEFINED BY USER XX X X X U D D ALLOW DOWNLOAD OF APPLICATION XX X X X D D D RUN CONTINUOUS INTERNAL TESTS SEE INDICATOR CODES IN THIS CHAPTER Figure 15 BM85 Programmable Models Configuration Switches Configuring the Programmable Models 65 4 7 Setting the Modbus Plus Address Before applying power to the BM85 set
70. its rear panel switches to the unit s Modbus Plus node address Figure 16 shows the switch locations combinations and addresses Set the address into switches 1 6 Switches 7 and 8 are not used USE LOWER SWITCHES SWITCH ADDRESS 1 2 3 1 0 2 1 0 O 3 J 4 1 t 5 O 4 6 I 4 7 O did 8 Jd ad 4 9 O 0 10 1 1 O 1 12 1 a 13 i 14 1 0 1 15 O J 4 16 vo ad 4 17 18 1 19 O l 20 71 10 21 i 22 O 7 23 Oo 2 i 24 dod 4 25 O G 26 1 27 O i 0 28 1 7 29 i 30 1 4 31 O dt 4 32 vo dos POSITION 4 44444440 00000004444444400000000 5 aaa aaa aaaaaaaassSOOOOOCOO00000000 Eee TA we R co ge os E ca fico ay em ico DB o BR cs To eR cm do wd cm fico DR ca fico Dc DU co ia ge BT ca J co oy o gt do No gt cs fico Be om Fe oo BM85 ADDRESS UP DOWN SWITCH POSITION 1 Carai Ng DD Co a DS ENE ek o PS o ice lak O RN o ERR Pa a SO Aa TE ce RR o DR Des O RR 2 3 DI O O O a OO O O A es Ta O O a QRO O O 4 44444440 00000004444444400000000 Figure 16 BM85 Programmable Models Modbus Plus Address Switches 66 Configuring the Programmable Models 5 OOOPS ROO OO FO O FOTO FOFO TOTO Es ds E ER ER AVES E EV ee E PE A E ER E Sp EV E 31007492 31007492 4 8 4 8 1 4 8 2 Indicator Codes During Downloading During downloading or internal testing the four serial ports are disabled and their indicators a
71. le Network A port to which multiple Modbus slave devices are to be connected In Figure 9 port 3 is an example Silent Master Network A port to which one Modbus master device and one or more slave devices are to be connected In Figure 9 port 4 is an example MODBUS PLUS BM85 BRIDGE 984 785 MULTIPLEXER CONTROLLER 1234 MASTER NETWORK Sete MASTER NETWORK NETWORK SLAVE SLAVE NETWORK NETWORK SLAVE SLAVE Figure 9 BM85 Modbus Port Types Configuring the Modbus Models 31007492 3 4 3 Slave Device Address If the port is to be configured as a Modbus single slave device port a slave device address must be assigned to the port in the range 1 247 decimal The address is part of the configuration of a port to which a single slave device is attached This address is not applicable to Modbus master devices as they do not use a device address It is also not applicable to Modbus networked devices as multiple devices can exist on the port 3 4 4 Communication Parameters You must set each port s parameters to communicate with the Modbus device or devices attached to the port Refer to the documents for your devices to determine their parameters Modicon Modbus devices generally support the following parameters RTU 8 bit binary mode 9600 baud 8 data bits 1 or 2 stop bits even odd no parity
72. ndicator should not be lit 5 2 2 Connecting DC Power Set the external dc power source to OFF Connect the BM85 to the source Set the dc power source to ON The BM85 unit s POWER indicator should illuminate Before proceeding with the connection of the network cables set the de power source to OFF The unit s POWER indicator should not be lit 74 installing the BM85 31007492 SERIAL SERIAL PORT 2 PORT 4 POWER CABLE STRAIN RELIEF AC POWER AC POWER MODBUS SERIAL SERIAL SELECTOR SWITCH PLUS PORT 1 PORT 3 PLUG AND FUSE AC POWER MODBUS PLUS SERIAL PORT CONNECTOR ADDRESS SWITCHES SWITCHES Figure 19 BM85 000 Rear Panel PV02 or earlier MODBUS PLUS POWER CABLE SERIAL SERIA PORT 4 CHANNEL B STRAIN RELIEF PORT 2 AC POWER AC POWER MODBUS PLUS SERIAL SERIAL SELECTOR SWITCH CHANNEL A PORT 1 PORT 3 PLUG AND FUSE UPPER SERIAL PORT SWITCHES AC POWER CONNECTOR LOWER MODBUS PLUS ADDRESS SWITCHES Figure 20 BM85C BM85E BM85S Rear Panel BM85 000 PV03 or greater GROUND MODBUS PLUS SERIAL SERIAL PORT 2 PORT 4 CHANNEL B MIA O MODBUS PLUS SERIAL SERIAL ae nae CHANNEL A PORT 1 PORT 3 125 VDC 24VDC UPPER SERIAL PORT SWITCHES LOWER MODBUS PLUS ADDRESS SWITCHES Figure 21 BM85D Rear Panel Installing the BM85 75 31007492 5 3 Connecting the Network and Serial Cables Network and serial cable connectors are located on the BM85 rear panel Rear panel views are provided in the followin
73. nt and remainder of the division will become the first two bytes of the five byte routing path The remaining three bytes of the routing path will always be zeros For example if the message the address 150 the resulting routing path will be 15 0 0 0 0 The first byte 15 is the quotient of the division the second byte 0 is the remainder The message will be sent to node 15 on the local Modbus Plus network If the message address is 163 the resulting routing path will be 16 3 0 0 0 The message will be routed to Modbus Plus node address 16 on the local network Further routing depends upon the type of device at that node address If node 16 is a Bridge Plus the message will be routed through the bridge to node 3 on the next network If node 16 is an SA85 Adapter the message will be accepted by that device and posted to its application task 3 Using this method up to 18 Modbus Plus nodes can be addressed each with a node address 8 25 If these nodes are Bridge Plus devices nodes 8 24 can pass messages through to nodes 1 9 on a second network with quotients 8 24 and remainders 1 9 Node 25 can pass messages to nodes 1 5 on that network 38 Configuring the Modbus Models 31007492 31007492 Silent Master Port Considerations In the Silent Master port configuration one Modbus master device and one or more Modbus slave devices can be connected as a Modbus network at the port This allows the master
74. oftware development technical support service beyond the initial 90 day period 31007492 Introducing the BM85 Bridge Multiplexers 9 1 5 Part Number NW BM85 000 NW BM85C002 NW BM85D008 Modbus Port Models Operating Modbus Plus Mounting Power Network Serial Serial Method Nominal Cable Ports Protocol Panel or Shelf 115 230 Vac Single Modbus ASCll or RTU Panel or Shelf 115 230 Vac or Single or Dual Modbus ASCII or RTU 24 Vdc 19 in Rack 125 Vdc or Single or Dual Modbus ASCII or RTU 24 Vdc The four serial ports on these models support Modicon Modbus serial devices These models provide the conversion between Modbus addresses and the required address formats for routing messages to other Modbus ports or to Modbus Plus nodes You must configure these models offline before connecting them to Modbus Plus or to any devices in your application You can do this by connecting a serial terminal to one BM85 port setting a switch to allow local setup of the parameters and applying power to the BM85 The BM85 displays menus on the terminal for setting up the configuration Each port is separately configurable You assign four kinds of parameters for each port Port type Modbus master silent master slave or network Protocol ASCII RTU Communication parameters baud rate stop bits parity mode Address mapping for conversion between Modbus addresses and Modbus Plus rout
75. on and setting If you have set the BM85 configuration correctly for a specific installation site you can transport the unit to the site and install it The RUN mode will be set when power is reapplied to the BM85 31007492 Configuring the Modbus Models 53 3 13 Modbus Port Indicator Codes If the BM85 detects a condition that prevents communication at its Modbus Plus or Modbus ports it shuts off all ports and displays an error code pattern at its four Modbus port indicators Indicator layouts are shown in Figure 22 The error pattern produces two 4 bit codes for two hexadecimal digits First the indicators show a steady pattern for one second indicating the upper digit Then they show a flashing pattern for one second with the lower digit The continuous and flashing patterns alternate repetitively Port 4 is the most significant bit in each code Indicators Pattern Hexadecimal Digit 4 3 2 1 Upper digit 4 3 2 1 Flashing Lower digit Hardware Error Codes 11 19 Hex Code Hexadecimal Meaning Co PROM checksum error o RAM data test error 43 RAM address test error 44 Normal power down event 47 Bador unexpected interrupt 48 EEPROM checksum error 4 Modbus port loopback error Modbus Driver Error Codes 24 2E Hex Code Hexadecimal Meaning 24 Modbus transmit state error 25 Modbus receive state error 26 ASCII transmit communications state error 27
76. ontrollers For programmable controllers the last non zero byte in the message routing specifies the network node address of the controller 1 to 64 18 Device Addressing and Message Routing 31007492 31007492 Routing to Host Based Network Adapters For host based network adapters the byte following the adapter s network node address specifies a task number 1 8 to which the message is assigned Subsequent bytes are not checked by the adapter and are available for custom use to the application for example for message counts or status information Routing to BM85 Bridge Multiplexers Routing to Serial Ports on BM85 Programmable Models For the programmable models the user application stored in the BM85 defines the addressing between Modbus Plus and the serial ports Routing to a Single Slave Device on BM85 Modbus Models For a single slave device at a Modbus port two bytes are used to address the device The next to last non zero byte addresses the BM85 node 1 64 The last non zero byte specifies the Modbus port 1 4 and therefore specifies the single slave device Figure 5 shows an example of routing to a single slave device BP85 BM85 BM85 ADDRESS ADDRESS PORT ZERO ZERO 1 64 1 64 1 4 Figure 5 Modbus Plus Routing to Single Modbus Slave Routing to a Networked Slave Device on BM85 Modbus Models For a slave device on a Modbus network at a Modbus port three bytes
77. or Single or Dual Modbus ASCll or RTU 24 Vde NW BM85E232 Panel or Shelf 115 230 Vac or Single or Dual RS232 Programmable 24 Vdc User Defined NW BM85E485 Panel or Shelf 115 230 Vac or Single or Dual RS485 Programmable 24 Vdc User Defined NW BM85S232 Panel or Shelf 115 230 Vac or Single or Dual RS232 Programmable 24 Vdc User Defined NW BM85S485 Panel or Shelf 115 230 Vac or Single or Dual RS485 Programmable 24 Vdc User Defined 70 Installing the BM85 Mounting dimensions of these models are shown in Figure 17 31007492 Part Number NW BM85D008 NW BM85D002 Horizontal Mounting The bottom surface of these models is fitted with pads for mounting on a horizontal platform or shelf Place the unit at or below eye level to allow viewing the indicators Mounting brackets are supplied with the unit for securing it on the horizontal surface Vertical Mounting For vertical mounting use the brackets supplied with the unit for bolting to a panel The brackets have tabs that insert into slots provided on the unit s bottom surface No additional hardware is required for securing the brackets to the BM85 You will have to furnish hardware for bolting the unit to your panel Four bolts are required Typically standard 1 4 20 10 mm machine screws or equivalent are satisfactory Install the unit at or below eye level to allow viewing the indicators Rack Mounted Models Operating Modbus Plus Mounting Power Net
78. outing to Single Modbus Slave 19 Figure 6 Modbus Plus Routing to Networked Modbus Slave 19 Figure 7 Bridge Multiplexer Address Conversion 00000 eee 20 Figure 8 Routing Examples 0 0 cc cece cece erra 22 Figure 9 BM85 Modbus Port Types 0 0 cece eee e ec e eens 30 Figure 10 BM85 Modbus Models Port Configuration Switches 40 Figure 11 Typical V1 Screen Modbus Ports Configuration 46 Figure 12 Typical V2 Screen Modbus Address Map Entries 48 Figure 13 Typical V4 Screen Save or Initialize the Configuration 50 Figure 14 BM85 Modbus Models Modbus Plus Address Switches 52 Figure 15 BM85 Programmable Models Configuration Switches 65 Figure 16 BM85 Programmable Models Modbus Plus Address Switches 66 Figure 17 Mounting Dimensions Shelf Panel Mount Models 72 Figure 18 Mounting Dimensions Rack Mount Models 73 Figure 19 BM85 000 Rear Panel cece eee eeeeeeennee 75 Figure 20 BM85C BM85E BM85S Rear Panel 00 0 75 Figure 21 BM85D Rear Panel 0 cece cece nee n nee 75 Figure 22 Layout ofthe Indicators 0 78 Figure 23 Modbus Plus Port Label 0 eee eee eens 80 Figure 24 Serial Port Parameters Label 0 0 0 cece eens 81 Figure 25 Modbus RS232 Cable Wiring Diagrams 04 86 Figure 26 Se
79. panel view 75 RUN mode Modbus port models 53 programmable models 68 S screens Modbus port models 44 V1 screen 46 V2 V3 screen 48 V4 screen 50 serial port cables connecting 76 serial ports devices and cables 84 Modbus RS232 pinout 87 RS485 pinout 88 silent master port 30 39 specifications ac dc models 12 de de models 14 switch setup Modbus port models 40 52 programmable models 65 66 T top front view rack mount models 73 shelf panel mount models 72 31007492
80. placed by NW BM85S485 for new installations Mounting Methods For the panel shelf models the BM85 bottom surface is fitted with pads for placement on a horizontal shelf Brackets are supplied for securing the unit to the shelf or for attaching it to a vertical panel Rack mount models are for installation into a standard 19 inch rack 31007492 31007492 1 2 3 1 2 4 Operating Power AC DC Models These models are supplied with a power cable of 6 ft 2 m length for operation from 110 120 Vac or 220 240 Vac single phase power The cable connects to a socket on the rear panel Grounding is through the cable The BM85 contains an ac line fuse that is accessible to the user All of these models except the BM85 000 can also operate from an external 24 Vdc source Power connects to a socket on the rear panel Grounding is through the cable The dc power source must be fused externally to the BM85 DC DC Models These models operate from a 125 Vdc or 24 Vdc source Power connects to a terminal strip on the rear panel A grounding terminal is provided The de power source must be fused externally to the BM85 Configuration Methods All BM85 models must be configured internally for your application before you can connect them for operation in your application This is necessary because the BM85 s internal configuration specifies how each serial port will operate Each model has two sets of rear panel switches One set assigns the
81. r Single or Dual RS485 Programmable 24 Vdc User Defined The four serial ports on these models are programmable by the user to support custom RS232 or RS485 serial devices These models must be downloaded with an executable BM85 application program across the Modbus Plus network The downloaded image contains all of the internal operating code used by the BM85 including communication protocols for the serial ports handshaking protocol translation between ports message packaging buffer space data conversion and error handling Each serial port indicator is individually programmable to show the port s status in the application The image can contain all of the serial port parameters for example baud rates and parity as fixed parameters Alternatively the image could provide a local protocol default parameters and a menuing system for the user to locally configure the serial ports through a terminal at one of the ports In addition to standard serial devices Modbus master or slave devices could be attached at RS232 serial ports if the user defined code includes a Modbus protocol handler You can create the BM85 application program on an IBM PC AT or 100 compatible using Modicon BM85 software development tools These are available from Modicon Customer Service and are shipped separately from the BM85 Details of the development tools are provided in Section 1 4 1 The BM85 can operate as a fully programmed
82. r will respond with a Modbus exception response to any message addressed to a reserved address Device Addressing and Message Routing 21 2 3 Routing Examples Figure 8 illustrates message routing across two networks MODBUS PLUS NETWORK UP TO 64 NODES 5 8 40 NOTE 1 M MODEM BOCE CPU A CPUB MULTIPLEXER PRIMARY STANDBY 1 2 3 4 M MASTER HOT STANDBY 25 A CONFIGURATION SLAVE A NETWORK SLAVE M 50 NETWORK x SLANE M MODBUS PLUS NETWORK UP TO 64 NODES 4 30 2 BM85 SA85 BRIDGE NETWORK CPUC MULTIPLEXER ADAPTER 12 3 4 M L TASKS 1 MODE MASTER 2 B SLAVE 5 MASTER C NETWORK SLAVE M 150 NOTES NETWORK 1 STANDBY UNIT ASSUMES PRIMARY ADDRESS PLUS 32 SLAVE M 200 Figure 8 Routing Examples 22 Device Addressing and Message Routing 31007492 Here are examples of routing between peer master and slave devices From To Routing Path CPU A Primary Slave A 5 2 0 0 0 50 5 3 50 0 0 CPUC 25 2 0 0 0 SA85 Task 1 25 30 1 0 0 Slave B 25 4 2 0 0 200 25 4 3 200 0 CPUC SA85 Task 2 30 2 0 0 0 Slave B 2 0 0 0 200 4 3 200 0 0 CPU A Primary 24 8 0 0 0 CPU B Standby 24 40 0 0 0 100 24 5 100 0 SA85 Slave B 4 2 0 0 150 3 150 0 0 CPUC 2 0 0 0 C
83. rd that defines signal requirements and cable connections for serial data communications characterized by a balanced pair of wires for both transmitted and received data section A contiguous grouping of cable segments together with their node devices connected directly to form a signal path that does not pass through any Repeater The minimum length of a section can be 10ft 8m the same as one segment The maximum length can be 1500 ft 450 m One section supports up to 32 nodes Glossary 95 96 Glossary segment The combination of a continuous length of trunk cable connecting a pair of taps the two taps and the drop cables between the two taps and their node devices One or more segments form a section of the network See section and tap serial port An communication port at which data is transferred one bit at a time slave A networked device which is controlled by another device Slave devices do not initiate data transactions They respond to commands or requests initiated by a master device See master slot time The amount of time representing the worst case time any station on the network must wait for a response from another station It is based upon the response time of the network s slowest station and the bus propagation delay Specific Input A type of data input received by a node using Peer Cop data transfers Nodes using Peer Cop can be configured to receive up to 32 16 bit words of Specific Input data
84. re used to show system status and error codes Indicator layouts are shown in Figure 22 Normal Download Codes The normal codes appearing during downloading are Indication Meaning Port 4 Flashing two times per second Ready for downloading Port3 ONintermittently Receiving download from host Port 2 ON combined with port 3 Writing to BM85 RAM Port 1 ON combined with port 3 Erasing BM85 RAM Error Codes If an error occurs during downloading or if the user calls the exit routine the BM85 displays an error pattern in its four indicators The error pattern produces two 4 bit codes for two hexadecimal digits First the indicators show a steady pattern for one second indicating the upper digit Then they show a flashing pattern for one second with the lower digit The continuous and flashing patterns alternate repetitively Port 4 is the most significant bit in each code Indicators Pattern Hexadecimal Digit Upper digit Flashing Lower digit Error Code Hexadecimal Meaning F1 BM85 kernel is reloading F4 Program or task returned to BM85 bootstrap F8 Program or task called abort FD Could not extend heap program called malloc or equivalent and had insufficient memory FE Couldnot create heap not enough memory below code area _ FF Not enough memory to copy program to RAM area Configuring the Programmable Models 67 4 9 Setting the RUN Mode 4 9 1 When to
85. rial Ports Pinout Modbus RS232 0005 87 Figure 27 Serial Ports Pinout RS485 eee eee 88 31007492 Contents ix 31007492 Chapter 1 Introducing the BM85 Bridge Multiplexers Bridge Multiplexers on Modbus Plus Overview of BM85 Models Programmable BM85 Models Configuring the Programmable Models BM85 Models for Modbus Devices Configuring the Modbus Models Specifications AC DC Power Models Specifications DC DC Power Models Introducing the BM85 Bridge Multiplexers 1 1 1 Bridge Multiplexers on Modbus Plus 1 1 1 The Modbus Plus Network Modbus Plus is a local area network designed for industrial control applications The network enables programmable controllers host computers and other devices to communicate throughout the production areas of an industrial plant It supports up to 64 addressable node devices at a data transfer rate of 1 million bits per second Single cable and dual cable network configurations are available User applications include transferring of process control and supervisory messages Typical networked devices include Modicon programmable controllers that connect to the network through a direct port on the controller or through a communications option Network adapters connect several types of host computer products to the network Multiple networks can be joined through Modicon Bridge Plus nodes This fa
86. s a string Press ENTER to complete the entry To correct keystrokes in an entry press DELETE To cancel an entry before completing it press ESCAPE 44 Configuring the Modbus Models 31007492 3 7 2 Printing the Configuration If you have a printer connected to your terminal you can use your Print Screen or equivalent key to print a hard copy record of your V1 V2 and V8 screens 3 7 3 Saving the Configuration After configuring the Modbus ports save your configuration using the V4 screen 31007492 Configuring the Modbus Models 45 46 lt COMMANDS gt lt P gt PORT NUMBER lt T gt PORT TYPE lt N gt Slave Dev Addr lt B gt Baud Rate lt S gt Stop Bits lt R gt Parity lt M gt Mode lt Y gt Priority lt L gt Link Timeout lt F gt Modem Booster gt gt Valid Commands V1 V2 V3 V4PTNBSRMYLF Active Port 1 gt gt __ Configuring the Modbus Models 3 8 Your V1 Screen MODICON MODBUS BRIDGE MUX Ver 1 0 Copyright c 1989 MODICON Inc Industrial Automation Systems Group MODBUS PORTS CONFIGURATION V1 1 master 9600 1 even rtu 1 Your V1 Screen Layout Modbus Plus Address 24 2 20 yes 3 network 2400 1 even rtu 3 10 yes Keys Enter Esc help Figure 11 Typical V1 Screen Modbus Ports Configuration Figure 11 shows a typical V1 screen Valid commands are listed on the screen OPTIONS 1 2 3 4 m s n x 1 247 50 19200 1 2 n o e a r 1 4
87. sical Layer LLC Logical Link Control The part of the device that performs the protocols for identifying users of the network and for providing reliable frame delivery The LLC handles the framing and checking of messages MAC Medium or Media Access Control The part of the device that performs the protocols for sharing the network with other devices The MAC handles the queueing and transmission of outgoing LLC level messages address recognition for incoming messages and resolution of access contentions MAP Manufacturing Automation Protocol A network protocol that allows devices or cells within an industrial environment to communicate with each other master A networked device which controls other devices to which it connects It initiates transactions and schedules and transmits tasks to a slave device See slave medium The entire cable system the network cable taps connectors and terminators Modbus An industrial networking system that uses RS232 serial master slave communications at data transfer rates of up to 19 2 k baud Modbus Plus An industrial networking system that uses token passing peer to peer communications at data transfer rates of one megabits per second The network medium is shielded twisted pair cable Glossary 93 94 Glossary Modbus Il An industrial networking system that uses token passing peer to peer communications at data transfer rates of five megabits per second The network medi
88. six essas tin ride a Fee he a ata dns 31 3 4 6 Link Timeout eiaei raia upa deed da aa A ra adidas nes 32 3 4 7 Modem Booster 0 c cece encerra 34 3 4 8 Modbus Address Map 000 ccc eee c cence nee eees 36 3 5 Configuring the Modbus Ports 0 ccc cc cece eee eee ees 40 3 5 1 Connecting Power for the Configuration 40 3 5 2 Setting the Switches 0 cc ccc cece ee eee ees 40 3 5 3 Connecting the Terminal 0 0 cece eens 41 3 6 Your Configuration Commands 060 c cece eee ene 42 3 6 1 The Default Configuration 0 0 c cece eens 43 3 7 Your Configuration Screens 0 cece cece eee eee eaes 44 3 7 1 Entering Commands Into Your Screens 44 3 7 2 Printing the Configuration 0 cece eens 45 3 7 3 Saving the Configuration 0 0 cece eee ees 45 3 8 Your VI Screen ss soree ensa west ee eee elena wel a pi hee eee eee see 46 3 8 1 Your V1 Screen Layout 0 0 ssa cece eee eee 46 3 8 2 Using the V1 Screen 0 ccc cece cence ne ees 47 3 9 Your V2 and V3 Screens 0 c ccc cee nee era 48 3 9 1 Your V2 or V3 Screen Layout 0 ccc eee eee 48 3 9 2 Using the V2 or V3 Screen 0 ccc eee eens 49 3 10 Your V4 Screen uso sry ni wee DEM i POR ee E GE een a dees 50 3 10 1 Your V4 Screen Layout 0 c cece cece eee 50 3 10 2 Using the V4 Screen
89. ss Modbus Plus 31007492 Introducing the BM85 Bridge Multiplexers 3 1 2 1 2 1 Part Number NW BM85 000 Note 1 NW BM85C002 NW BM85D008 NW BM85E232 Note 2 NW BM85D002 NW BM85E485 Note 3 NW BM85S232 NW BM85S485 Overview of BM85 Models Available Models BM85 models are available for application in single cable or dual cable Modbus Plus networks with a variety of serial port configurations The characteristics of the BM85 models are Operating Modbus Plus Mounting Power Network Serial Serial Method Nominal Cable Ports Protocol Panel or Shelf 115 230 Vac Single Modbus ASCII or RTU Panel or Shelf 115 230 Vac or Single or Dual Modbus ASCII or RTU 24 Vde 19 in Rack 125 Vdc or Single or Dual Modbus ASCII or RTU 24 Vdc Panel or Shelf 115 230 Vac or Single or Dual RS232 Programmable 24 Vdc User Defined 19 in Rack 125 Vdc or Single or Dual RS232 Programmable 24 Vdc User Defined Panel or Shelf 115 230 Vac or Single or Dual RS485 Programmable 24 Vdc User Defined Panel or Shelf 115 230 Vac or Single or Dual RS232 Programmable 24 Vdc User Defined Panel or Shelf 115 230 Vac or Single or Dual RS485 Programmable 24 Vdc User Defined 1 2 2 4 Introducing the BM85 Bridge Multiplexers Notes 1 Model NW BM85 000 has been replaced by NW BM85C002 for new installations 2 Model NW BM85E232 has been replaced by NW BM858232 for new installations 3 Model NW BM85E485 has been re
90. the following models Mounting Method Panel or Shelf Panel or Shelf Operating Power Nominal 115 230 Vac or 24 Vde 115 230 Vac or 24 Vdc Modbus Plus Network Cable Single or Dual Single or Dual Serial Ports RS485 RS485 Serial Protocol Programmable User Defined Programmable User Defined 88 Compatible Devices and Cables Figure 27 shows the pin configuration for the RS485 port connectors If you are fabricating cables for your application the panel connector is a DB9S The Modbus Plus inline connector part number AS MBKT 085 is an acceptable substitute for an RS485 cable connector Do not use a Modbus Plus terminating connector AS MBKT 185 in this application REAR PANEL SERIAL PORT CONNECTORS 54321 0000o 000o 9876 Figure 27 Serial Ports Pinout RS485 Pin BMB85 Direction In Out In Out 9 aj wf rp a Purpose Chassis ground Receive Transmit A Receive Transmit B not used 31007492 Glossary 31007492 acknowledgement An LLC frame that indicates that a data frame has been received correctly address On a network the identification of a station In a frame a grouping of bits that identifies the frame s source or destination ASCII American Standard Code for Information Interchange A digital coding of alphanumeric and control characters as established by the American National Standards Insti
91. ting code for message handling buffer allocation protocol conversion and your serial port parameters You can create the application program on an IBM PC AT or compatible using Modicon software development tools that are shipped separately from the BM85 These require the use of a Borland C C development environment which must be supplied by the user In addition to its internal configuration the BM85 s Modbus Plus node address must be assigned This is done in a set of hardware switches on the rear panel Downloading the Application The compiled application can then be downloaded to the BM85 using a utility supplied with the Modicon tools The download host can be the same computer that was used for developing the application or a separate computer For downloading the host must contain a Modicon SA85 Modbus Plus network adapter for an IBM AT compatible host or Modicon SM85 adapter for an IBM Micro Channel compatible host If a network connection is available for the BM85 in the vicinity of the host node you can download and debug your application locally Otherwise you can download it to the BM85 at its installation site When the user application has been stored in the BM85 it will be retained by the BM85 after power is removed If the parameters are correct for the intended installation site the unit can be transported to the site and installed there without reconfiguration 8 Introducing the BM85 Bridge Multiplexers
92. tute baud rate The speed of data transmission in serial data communications approximately equal to the number of code elements bits per second bit Binary Digit The smallest unit of data which can at any time be in one of two possible states represented by a value of 0 or 1 bridge A device that interconnects two or more networks Bridge Multiplexer A Modicon device that interconnects a Modbus Plus network with up to four Modbus devices or networks or up to four RS232 or RS485 serial devices See Co Processor Glossary 89 90 Glossary Bridge Plus A Modicon device that interconnects two Modbus Plus networks broadband A network communications method supporting multiple data transmission channels using frequency division multiplexing bus An electrical channel used to send or receive data carrierband A network communications method in which information is transmitted using a single transmission channel See broadband channel The communication pathway between two or more devices coaxial cable A two conductor cable in which an inner conductor is the signal path and an outer conductor is a shield A dielectric separates the two conductors Co Processor Bridge Multiplexer models BM85S232 and BM85S485 These models contain a user defined application program that can independently control processes at their four serial ports accessing Modbus Plus nodes only as required CRC Cyclic Redundancy Checking An
93. uld be off at this time Connect the terminal to the port you are using for configuration Set the terminal s communication parameters to match those of the BM85 Power up your terminal and start any emulation program you are using Your terminal should be running and ready before you apply power to the BM85 Apply Power to the BM85 When you have set the configuration switches and your terminal is ready apply power to the BM85 The configuration port s indicator should blink at one second intervals showing that the configuration mode is active Your terminal should display the MODBUS PORTS CONFIGURATION V1 screen Your configuration screens and keyboard commands are described starting at Section 3 6 Configuring the Modbus Models 41 Command V P N T nl lt m gt o s 3 6 Your Configuration Commands Each screen shows the commands that are valid for that screen You can use either upper or lower case when entering a command Action Select a configuration screen or Help screen Select a port to be configured Enter a Modbus slave device address Enter the port type Enter the baud rate Enter the stop bits Enter the parity mode Enter the communication mode Enter the port priority Enter the link timeout value Enter the modem booster selection Write the configuration parameters to all four ports Initialize all four ports with default parameters Display Help for the current configuration screen
94. ultitasking is handled on a cooperative basis an active task routine must make periodic calls to an arbitration routine allowing that routine to either continue the calling task or handle another pending task Your demonstration programs TEST4 C and TEST5 C provide source examples of the use of the library s multitasking functions TEST4 C is coded in C TEST5 C is coded in C for programmers who are more familiar with that language Configuring the Programmable Models 61 4 4 Installing the Development Software This overview of the software installation process is supplied to assist your planning Complete documentation is provided in the software kit Substitute the paths and parameters used in your Borland development environment wherever applicable 4 4 1 Default Parameters The development software is supplied with two default parameters for downloading to your BM85 One parameter specifies how to access your SA85 SM85 driver the default specifies software interrupt vector 5C The other parameter is the Modbus Plus node address of the target BM85 unit for downloading the default is node address 4 If your SA85 SM85 driver and BM85 are set to these parameters your installation will be easier because you can bypass part of the setup see Steps 6 and 7 below 4 4 2 Installation Steps 1 Ifyou have already installed the SA85 SM85 Modbus Plus adapter and its driver and have edited your CONFIG SYS file to include a DEVICE
95. um is coaxial cable modem Modulator demodulator A device that conditions digital data for transmission along an analog signal path or conditions input signals received from the path for use as digital data network The interconnection of devices sharing a common data path and protocol for communication On Modbus Plus the devices share in the passing of a common token frame to gain sequential access for sending messages Network Option Module A hardware module that is mounted into a common backplane together with a Programmable Controller communicating with the controller over the backplane The module connects to the Modbus Plus network and provides the central point for communication between the controller s application program and the node devices on the network node A device that has a direct point of access to a communications network On Modbus Plus any device that is physically connected to the network OSI Model Open Systems Interconnection Model A reference standard describing the required performance of devices for data communication Produced by the International Standards Organization Peer Cop A method of peer to peer communication between networked devices in which data is transferred as part of the passing of tokens between nodes Each node passes the token in the network s address sequence and can be configured to transmit data in addition to the token All nodes monitor the token passes and can be conf
96. work Serial Serial Method Nominal Cable Ports Protocol 19 in Rack 125 Vdc or Single or Dual Modbus ASCll or RTU 24 Vde 19 in Rack 125 Vdc or Single or Dual RS232 Programmable 24 Vdc User Defined 31007492 Mounting dimensions of these models are shown in Figure 18 Rack mount models are designed for installation into a standard 19 inch rack You will have to furnish hardware for bolting the unit to your rack Four bolts are required When mounted the unit can support itself by its front mounting bolts It is light enough in weight that you do not have to provide rear support within the rack Installing the BM85 71 TOP VIEW Allow 4 0 in 102 mm rear clearance for access to switches cables and fuse 8 3 in 211 mm 5 25 in 1 53 in 133 mm 39 mm Modbus Plus Bridge MUX NW BM85 000 11 5 in 292 mm gt _ _ 12 83 in 326 mm 14 08 in 358 mm REAR PANEL VIEW 2 59 in 66 mm Figure 17 Mounting Dimensions Shelf Panel Mount Models 72 installing the BM85 31007492 FRONT PANEL VIEW 18 25 in 464 mm 932 gt 19 0 in 483 mm 310074920P VIEW Allow 4 0 in 102 mm rear clearance for access to switches and cables 4 17 25 in 488 mm _ o 9 15 in 232 mm 8 48 in 10 59 in 215 mm 269 mm 1 44 in 37 mm Figure 18 Mounting Dimensions Rack Mount Models 310
97. you should view this file You may also want to printout a hard copy to use as a reference in developing your application 60 Configuring the Programmable Models 31007492 31007492 4 3 3 4 3 4 Test and Demonstration Source Files The following files provide source code examples that you can use in your development They can also be modified and used as test programs for exercising and testing your BM85 File Name Purpose TESTO C Displays a code on the BM85 LED indicators TEST1 C Shows Modbus Plus master and slave operation TEST2 C Demonstrates multitasking using the BM85 indicators TEST3 C Demonstrates floating point emulator TEST5 C Same as TEST4 C but uses C conventions TEST6 C RS232 port loopback test TEST7 C RS232 RS485 port loopback test long term TEST8 C Sample large program 240K for download testing Using the Test and Demonstration Source Files To use any file first copy it to the filename BM85 C then modify that file for your BM85 application and compile it Download the executable BM85 EXE to the BM85 using the BM85LOAD utility For example the download can be run within the Borland 3 1 environment using the following sequence Key Sequence Purpose Transfer menu BM85 download Alt space Multitasking in Your Application The BM85 library includes functions that you can use to construct a routine for assigning and controlling multiple tasks or threads within your application M

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