SMC Networks 1560 user manual Modbus Plus Port Functionality, Modbus Plus Communications

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Chapter 2 — Modbus Plus Port Functionality

Contents

2 Modbus Plus Port Functionality

2.1Modbus Plus Communications

The 1560-MBP Modbus Plus card supports the Modbus Plus protocol using proprietary technology licensed from Schneider Automation. With the Modbus Plus capability, the module is able to communicate data from Allen-Bradley SCANport compatible devices to a Modbus Plus host PLC, and vice-versa.

The following discusses the functional capabilities of the 1560- MBP card.

2.1.1 Supported MSTR Programming Commands

The 1560-MBP uses several of the available MSTR ladder logic commands to transfer data when using a Modicon PLC. These are overviewed below:

Read Data: The following types of data read commands are supported:

MSTR Type 2 Read Data

This command reads data from any place within the Modbus Register map. This command allows a Modbus host to selectively read data from the 1560-MBP as required for the application.

MSTR Type 6 Read Global Data

This command gets data from the Global Data being sent from the 1560-MBP. The 1560-MBP returns 2 to 10 words of Global data. This is the fastest method of reading values from the MBP.

Write Data: The following data write commands are supported:

MSTR Type 1 Write Data

This command writes data to any place within the 1560- MBP Modbus Register map. This command can be used to selectively write configuration values to the SCANport device. In addition, if the Global Data Command Enable dip switch is disabled, this command can be used to write to the SCANport Control and Reference words (Modbus addresses 40001 to 40010).

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Contents 1560 Table of Contents Please Read This Notice Quick Start Guide Step-by-StepRevisions Product Specifications Modbus Plus SpecificationsGeneral Specifications Configuration via dip switches Slave Address Host Address24 VDC Operating Temp To 50 C Storage Temp 40 to 85 C Modbus Plus Communications Supported Mstr Programming CommandsModbus Plus Port Functionality MBP Modbus Address Space Modbus Register MapMstr Type 5 Write Global Data Dip Switch Configuration Hardware Setup1560-MBP Card Setup Connecting Power to the 1560-MBP Card Switch SW Function Description Details Fault on LossModbus PlusSwitch SW 2 cont’d Contents Writing to the 1560-MBP Global Data Enabled Mstr Type Programming Considerations1560-MBP Global Data Enable 40400 Active Abort Error 40410Modicon Programming Example Mstr SuccessHost Issued Write Commands Mstr Type Modicon Programming Example Mstr Type Reading from the 1560-MBPGlobal Data Mstr Type Host Issued Read Commands Mstr Type Enable 40500 Active40510 0001000020 4005040060 MBP Status Registers 40021 to Modbus Name Values Description AddressBatch At this time LED Locations TroubleshootingLED Troubleshooting Table SCANport Mbpstat Diagnostics Cable Diagram TxRxD+Technical Support Technical Support ContactsMBP Modbus Appendix aMBP Modbus Register Map Appendix B Device Specific HintsDrive Status Word Bit Function Description Setting up the Adaptor I/O DataLogic Control Word Bit Function Description Hardware Configuration Appendix CSingle Drive Peer Cop Application Example OverviewSwitch Position Description Configuration Extension BlocksPLC REF Drive Status PLC Ref PLC Name Description Ladder Logic ProgrammingRefOffset Description Special Precautions and hints TimingAddressing HintsAppendix D Mounting and SCANport Cabling InstructionsMounting Instructions 70mmCable Requirements Appendix E SCANport Datalink OperationGeneral Warranty Policy Repair and WarrantyService and Repair Hardware Product Warranty Details Limitation of LiabilityContents