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Chapter 2: Modbus PLCs Using Modbus

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Modicon PLCs Using Modbus

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This chapter explains how to use your PanelMate operator station with Modicon PLCs in Modbus
ASCII or RTU mode. Specifically, this chapter includes:

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Introduction

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Memory

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Possible Configurations

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PLC & communications module setup

•

Cable diagrams

•

Communications parameters

•

Modicon word and bit references

•

Maintenance access

•

PLC cabling cross reference list

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Содержание Cutler-Hammer PanelMate Modicon

Страница 1: ...PanelMate Modicon Communication Driver Manual Eaton Corporation Cutler Hammer Business Unit 811 Green Crest Drive Columbus OH 43081 ...

Страница 2: ... Manufacturer is Eaton Corporation s Cutler Hammer Business Unit 811 Green Crest Drive Columbus OH 43081 TRADEMARKS PanelMate is a federally registered trademark of Eaton Corporation MS DOS Microsoft and Windows are federally registered trademarks of Microsoft Corporation Data Highway and Data Highway Plus are trademarks of Allen Bradley DeviceNet is a trademark of Open DeviceNet Vendor Associatio...

Страница 3: ......

Страница 4: ...questions you can take advantage of our toll free line for technical assistance with hardware and software product selection system design and installation and system debugging and diagnostics Technical support engineers are available for calls during regular business hours Information Fax Back Service VOICE 614 899 5323 The latest Cutler Hammer product information specifications technical notes a...

Страница 5: ...25 Pin Modems J478 17 Communications Parameters 17 984 and 584 Modbus Ports 18 984 38X 48X 68X and 78X 18 884 Modbus Ports 18 Micro 84 J375 Modbus Adapter 19 484 PLC J474 Modbus Communication Interface 20 Modicon Word and Bit References 22 Modicon Micro 84 184 384 and 484 22 Modicon 584 884 and 984 Register Input and Coil References 23 Maintenance Access 25 Modicon PLCs Using Modbus Plus 26 Introd...

Страница 6: ...984 685 984 785 Compact 984 145 984 385E 984 485E 984 685E 984 785E and Quantum 36 Unsolicited Writes to the Operator Station with Modbus Plus 38 Maintenance Access 39 Modicon 410 Servo Controller 40 Introduction 41 Driver Installation 41 Memory 41 Possible Configurations 42 Direct 42 Multiple Controllers 42 Cabling 43 Communication Parameters 44 Modicon 410 Word and Bit References 45 Maintenance ...

Страница 7: ...Chapter 1 Introduction 5 Introduction 1 This chapter describes Modicon drivers specifically About driver installation How to download drivers to a PanelMate ...

Страница 8: ...connectivity to Modicon Modbus Plus If you need to use a connectivity option not contained in this section contact the Cutler Hammer Support Services for recommendations PanelMate Configuration Editor software is installed using a CD ROM To install the drivers from the CD ROM select the Install Software option and then Install Drivers From the dialog box select the driver you wish to install ...

Страница 9: ...oaded with Executive Firmware Choose the Driver tab Select the appropriate driver to be downloaded to the PanelMate Click the button labeled Add to Operation List Place the PanelMate unit in Serial Transfer Mode Connect a serial transfer cable from the correct port on the PC to port 1 on the PanelMate See cabling below Click Start at the bottom of the VCP Transfer Utility window Note For a more de...

Страница 10: ...8 Modicon Communication Driver Manual Cable P N 0818 PanelMate Power Series 1500 and PanelMate 500 only ...

Страница 11: ...nelMate operator station with Modicon PLCs in Modbus ASCII or RTU mode Specifically this chapter includes Introduction Memory Possible Configurations PLC communications module setup Cable diagrams Communications parameters Modicon word and bit references Maintenance access PLC cabling cross reference list ...

Страница 12: ...s required in the PLC to support the interface to the Operator Station The information in this manual is for the Modbus ASCII and Modbus RTU mode drivers only Depending on the driver selected in the PLC Name and Port Table you must select either ASCII or RTU mode to communicate to an Operator Station Memory The following memory types are supported by the Modbus ASCII and Modbus RTU Micro 84 184 38...

Страница 13: ...gurations Examples of possible connections are described and shown in the following pages Direct A direct connection to a Modicon PLC with built in Modbus without the need for any additional modules Models without built in Modbus require a Modbus adapter ...

Страница 14: ...mmunication Driver Manual Multiple PLCs on a Single Modbus If the Operator Station is to communicate with multiple PLCs on a single Modbus network it requires its own Modbus modem to provide the necessary interface ...

Страница 15: ...us Ports Built In Modbus Adapter Modbus Modem Cable Connector Port s 3 N A S978 DB 25P 1 2 3 984 X 2 N A S978 DB 25P 1 2 984 381 480 680 780 2 N A J878 DE 9P 1 2 984 380 1 N A J878 DB 9P 1 984 1XX 1 N A J478 DB 9P 1 884 2 N A J478 DB 25P 1 2 584 2 N A J478 Military 1 2 484 None J474 J474 475 30 pin 1 2 µ84 None J375 J378 DB 25P 1 Micro 1 N A JXXX RJ45 1 984 120 984 130 984 145 Models 984 385 485 6...

Страница 16: ... A 15 foot PLC cable can be purchased from Cutler Hammer Contact the Customer Support Center at 614 883 3282 or your local distributor for more information Refer to the PLC Cabling Cross Reference List section for cabling catalog numbers The Operator Stations that have 9 pin female connectors DB 9S must have cables configured with male connectors DB 9P Note For PanelMate PC applications a female 9...

Страница 17: ...Chapter 2 Modbus PLCs Using Modbus 15 Micro RJ45 Connector MB22 TD RD SG 584 Military Connector 25 Pin Modems J478 ...

Страница 18: ...icon Communication Driver Manual The Operator Stations that have RJ 11 6 wire modular jacks must have cables configured with male modular connectors Modbus 25 Pin Ports Modbus 9 Pin Ports Micro RJ45 Connector ...

Страница 19: ...r through dipswitch settings on the individual module or programming selections using the Modicon P230 Programmer Standard communication parameters for communicating with Modicon PLCs using Modbus are 7 data bits for ASCII mode and 8 data bits for RTU mode 1 stop bit 9600 baud rate ASCII or RTU mode No parity 2 stop bits for 984 38X 984 48X 984 68X Depending on the driver selected in the PLC Name ...

Страница 20: ...t the dipswitch setting remain in RTU mode so that a maintenance person can plug in a local Data Access Panel by selecting the dipswitches 884 Modbus Ports Modbus port 1 parameters may only be configured using the Modicon P230 Programming Panel Port 2 parameters may be set either by the Programming Panel or by dipswitches Port 1 is factory set to the following parameters Data Bits 7 fixed Mode RTU...

Страница 21: ... the station address for the Micro 84 Station addresses are entered as binary numbers where switch 1 is of lowest significance and switch 8 is of highest significance Table 2 Port 2 Dipswitch Settings Switches 1 2 3 and 4 of switch set two S2 are used to configure the baud rate for the J375 Switches 5 and 6 are used to configure the parity for the J375 Note When communicating with the Operator Sta...

Страница 22: ...l user options such as baud rate parity and stop bits are selected by the wiring of this connector The following tables include pin descriptions and selection options for the J474 Modbus Communication Interface Table 3 Port Pinouts for the J474 Interface Baud rate is selected by connecting pins 9 11 13 and 15 to signal ground at pin 7 The following chart summarizes selection options where YES conn...

Страница 23: ... 12 to pin 26 as shown below Table 5 Example for a Slave Address of 11 Specific modes of operation are selected by connecting pins 28 and 30 to signal ground at pin 26 The following chart summarizes selection options where YES connect to pin 26 and NO leave unconnected Table 6 Mode Selection The number of stop bits and parity are selected by connecting pins 17 19 and 21 to signal ground at pin 7 T...

Страница 24: ...he Modicon PLCs listed above use decimal addresses The Operator Station format default is BIN3 The following list contains the supported memory types 0XXX Coils discrete outputs 1XXX Discrete inputs read only 3XXX Input registers read only 4XXX Holding output registers The following is the format for a register reference rr rr PLC reference number of the register The following is the format for an...

Страница 25: ...registers read only 3XXXXX 4XXXX Holding output registers 4XXXXX Note The Modicon PLC model 984 785 allows six digit addressing and holding output register bit writes Note Individual bit writes to the holding output register are not allowed except for the 984 785 PLC The following is the format for a register reference rr rr PLC reference number of the register The following is the format for an i...

Страница 26: ...or the 984 785 PLC Bit references in expressions refer to Modicon inputs or outputs All references to words refer to Modicon registers The Modicon PLC models 584 884 and 984 up to 25 contiguous words per single read The maximum number of unused words is 10 The Operator Station generates another read when more than 10 unused PLC words are encountered Examples The following are examples of valid PLC...

Страница 27: ... SMD should not be entered as the default reference in the Maintenance Template Note When a new reference is entered on an Operator Station the Maintenance Template will remain in a paused state until the Start Monitor control button or the Chng soft function key is pressed When the Start Monitor control button or the Chng soft function is pressed the Operator Station will parse the reference Pars...

Страница 28: ...PanelMate Power Series operator stations on the Modbus Plus network Specifically this chapter includes Introduction Memory Possible Configurations Cabling Communications parameters Configuration entries Switch settings Modicon word and bit references Unsolicited Writes to the operator station Maintenance access ...

Страница 29: ...The interface board has responsibility for establishing and maintaining communications across the network No ladder logic is required to support the interface Memory The following memory types are supported by the Modbus Plus interface board XXXX Coils discrete outputs XXXX Discrete inputs read only 3XXXX Input Registers read only 4XXXX Holding output registers 900XX Global data read only range 1 ...

Страница 30: ...irect The Operator Station may be connected directly to a Modicon controller having Modbus Plus capability The Operator Station must have a different network node address than the Modicon controller see Switch Settings for more information on setting node addresses ...

Страница 31: ... Operator Station acts like a node on the immediate Modbus Plus network Each node on the network must have a separate node address as in the following example see the Switch Settings section for more information on setting node addresses Operator Station Modbus Plus Termination Node Operator Station Modbus Plus Inline Node ...

Страница 32: ...controllers at once An Operator Station communicates with a controller through a maximum of four bridges An Operator Station communicates with another Operator Station through a maximum of three bridges Note The address of the system on the 5th byte of the routing address must be a number less than 8 Sample Operator Station Modbus Plus Network ...

Страница 33: ...er the Modbus Plus A port or the Modbus Plus B port If an error occurs the corresponding red error LED will turn on while the communication error exists Network Communication Status Modbus Plus status is shown by flashing a repetitive pattern on the green indicator The patterns are Six flashes per second The Modbus Plus interface board s normal operating state The indicator flashes each time the b...

Страница 34: ...ork link for an open or short circuit or defective termination Four flashes then OFF for 1 4 seconds The Operator Station node has heard a valid message from another node that is using the same address as this node The node remains offline in this state as long as it continues to hear the duplicate address If the duplicate address is not heard for five seconds the node then changes to the pattern ...

Страница 35: ...ified The Operator Station can communicate through a maximum of four bridges When entering routing information each bridge address is followed by a command The last routing address represents the ID of the controller the Operator Station will be communicating with Sample Addressing for Configuration PLC8 40055 Register 40055 of Controller 19 Network 4 PLC4 30125 Register 30125 of Controller 12 Net...

Страница 36: ...ation node address must not be the same as any other node address on the immediate network Note The dipswitch on the dual cabled Modbus Plus Interface board is located at the rear of the board 984 385 984 484 984 685 984 785 Compact 984 145 984 385E 984 485E 984 685E 984 785E and Quantum The 984 385 485 685 785 and Compact 984 145 models have a switch setting for configuring the node address In th...

Страница 37: ...1 0 1 1 0 1 14 0 1 1 1 0 0 46 0 1 1 1 0 1 15 1 1 1 1 0 0 47 1 1 1 1 0 1 16 0 0 0 0 1 0 48 0 0 0 0 1 1 17 1 0 0 0 1 0 49 1 0 0 0 1 1 18 0 1 0 0 1 0 50 0 1 0 0 1 1 19 1 1 0 0 1 0 51 1 1 0 0 1 1 20 0 0 1 0 1 0 52 0 0 1 0 1 1 21 1 0 1 0 1 0 53 1 0 1 0 1 1 22 0 1 1 0 1 0 54 0 1 1 0 1 1 23 1 1 1 0 1 0 55 1 1 1 0 1 1 24 0 0 0 0 1 0 56 0 0 0 1 1 1 25 1 0 0 0 1 0 57 1 0 0 1 1 1 26 0 1 0 1 1 0 58 0 1 0 1 1 ...

Страница 38: ...llers listed above use decimal word addresses The Operator Station format default is BIN4 The following list contains the memory types supported by the Operator Station 0XXXX Coils discrete outputs 1XXXX Discrete inputs read only 3XXXX Input registers read only 4XXXX Holding output registers 900XX Global data Modicon Controllers read only G00XX Global data Operator Station node An Operator Station...

Страница 39: ... The register number must be followed by a space or a period Input register bit writes are not allowed Output register bit writes are not allowed except for the 984 785 PLC The following is the format for a global data word read from a Modicon Controller 900rr rr Controller reference number of the register The following is the format for a global data bit read from a Modicon Controller 900rr bb or...

Страница 40: ...rator Station can receive unsolicited writes from a Modicon controller provided the Operator Station and the specified address is referenced in the Operator Station The Modicon controller performs unsolicited writes through the use of the MSTR function block The Master Function Block consists of 4 main components the control block data start data size and the enable input The Control Block This bl...

Страница 41: ...ntenance Access The Maintenance Template or Page will access all memory locations supported by the PLC driver as defined in this manual When running online you may change the PLC reference You must enter the correct mnemonics and numeric values and create a legal reference to change a PLC reference Note When a new reference is entered on a Operator Station the Maintenance Template will remain in a...

Страница 42: ...o use the PanelMate operator station to communicate with the Modicon 410 Intelligent Brushless Servo Controller Specifically this chapter includes Introduction Driver Installation Memory Possible Configurations Cabling Communication Parameters Modicon 410 Word and Bit References Maintenance Access ...

Страница 43: ...skette labeled PanelMate Plus Modicon Driver Disk To install the driver on your hard disk insert the driver disk in your computer Under Windows in the Program Manager choose File Run In the Run dialog box type Drive Setup In the Command Line entry field where drive is the letter of the floppy drive that contains the driver disk choose the OK button From the Setup program select the directory for t...

Страница 44: ...w Direct A direct connection to a Modicon 410 without the need for any additional modules uses RS232 RS422 communications Multiple Controllers The following figure shows multiple controllers connected on a network using RS422 communications The RS422 communications allow a maximum of 16 Modicon 410s to be connected on a network ...

Страница 45: ...t be wired as shown below A multi drop configuration can be wired using RS232 as long as it is used to connect the PanelMate unit to the first device only All subsequent devices must be wired using RS422 in a daisy chain fashion Communications Cable for Modicon PLCs PanelMate Serial Ports Modicon 410 Shield 1 SHLD 2 RD 3 RD 3 TD 2 TD 5 GND 7 GND Modicon 410 RS232 Cabling Communications Cable for M...

Страница 46: ...ork address selected is the PLC ID in the PanelMate Plus unit PLC Name and Port Tables 0 indicates the switch should be in the down position 1 indicates up Switch Settings Address 1 2 3 4 0 0 0 0 0 1 0 0 0 1 2 0 0 1 0 3 0 0 1 1 4 0 1 0 0 5 0 1 0 1 6 0 1 1 0 7 0 1 1 1 8 1 0 0 0 9 1 0 0 1 10 1 0 1 0 11 1 0 1 1 12 1 1 0 0 13 1 1 0 1 14 1 1 1 0 15 1 1 1 1 Standard communication parameters for communic...

Страница 47: ...luding format descriptions This interface supports only reading and writing 32 bit signed user registers Register addresses must be in a decimal format in the range of 0 to 99 The default PanelMate unit read write format is signed 32 S32 Only 32 bit data types are allowed S32 U32 BCD6 BCD8 BIN6 BIN8 The following is the format for a register reference rr rr PLC reference number of the register o 9...

Страница 48: ...erface Card 32 M Maintenance Access 26 Modbus 26 Modbus Plus 40 Memory 10 ASCII 10 Modbus Plus 28 RTU 10 Modbus Plus Interface Board 28 P PLC Configurations 11 Modbus Direct 11 Modbus Plus Direct 29 43 Modbus Plus Multiple controllers on a single Modbus Plus network 30 Modbus Plus Multiple controllers on multiple Modbus Plus networks 31 Multiple PLCs on a single Modbus 12 S Serial Transfer Cables ...

Страница 49: ... described in this document Are the instructions easy to follow Are the examples helpful useful Are there enough examples Is the document organized logically Is it easy to find what you are looking for Are the illustrations clear and useful How would you improve this document Please list any errors found in this document Other comments Your name and address optional Thank you for your comments Ple...

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