GE Guide to Configuring the P485 Modbus to Profibus Converter for Multilin MM2 Communication

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GE Consumer & Industrial

P485 Modbus to Profibus Converter

Chapter 9: Application example

OVERVIEW

EQUIPMENT AND DOCUMENTS

Introduction

The chapter describes how to configure the P485 Modbus to Profibus Converter to allow GE Multilin relays and meters to communicate on a Profibus Network. The GE Multilin MM2 Motor Manager 2 and PQMII Power Quality Meter are used as examples.

GE Multilin relays and meters support a very useful feature called the Modbus User Map in their software. This feature can be used in configuring the P485 to reduce the number of Modbus transactions and improve communication speed.

It is assumed that the reader is familiar with serial communication, Profibus networks, and PLC architecture.

The examples in this chapter make use of the following equipment and documentation

•P485 Modbus to Profibus Converter

•RS485 cable to connect P485 to the relays/meters (MM2 and PQMII)

•Enervista P485/D485 Setup software with configuration cable

•GSD file for the P485

•standard Profibus cable with connectors

•24 V DC power supply for the P485

•PLC with Profibus master card

•PQMII Power Quality meter and instruction manual (publication code GEK-106435D)

•Enervista PQMII Setup software

•MM2 relay and instruction manual (publication code GEK-106294B)

•MM2PC software

P485 MODBUS TO PROFIBUS CONVERTER – USER GUIDE

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Contents GE Multilin P485 Modbus to Profibus ConverterPage P485 Modbus to Profibus Converter Table of contentsSoftware Frame Miscellaneous Getting started IntroductionInput and output definition Document conventionsFeatures FeaturesAbout the P485 Modbus to Profibus Converter Mechanical Housing SpecificationsOrdering CommunicationsInstallation Quick installElectrical installation Pin Signal Description Profibus connector pin assignmentsPin Description Configuration cable pin assignments P485 endConfiguration cable PC end Indicators and switches Mechanical installationNumber Description State Status P485 status indicatorsInput/output bytes required Modules Profibus installation procedurePoor performance TroubleshootingOverview Data exchangeMemory Map Address Contents AccessBlocks Protocol configurationData Exchange Installation procedure Software overviewIntroduction Select Configuration Wizard and click on OK Using the EnerVista P485/D485 Setup softwareTypical network arrangement Sub-network data flow Address Command Software Overview P485 Modbus to Profibus Converter User Guide Software Overview Configurator main window Configuration main windowInformation window Function Description Fieldbus configurationP485/D485 configuration P485/D485 configurationParameter Description Range Modbus network configurationSoftware Overview PLC Communication modelP485 scan list Basic settingsMenu NodesCommunication Model P485 Modbus to Profibus Converter User Guide Communication Model Frame editor Frame and command editorsSelect command window Command editorQuery Column Select ‘Add Command’ as described earlierMain window Modbus network monitor Modbus network and node monitorsStart / Stop sub network scanning Node monitor Update OFF Update onCommand Area Control and status registers Advanced functionsCode Name Description Bits Name DescriptionHandshake bits themselves bits 14 Code Error Description Fieldbus control system Input/output data during startupMailbox command Advanced fieldbus configurationAdvanced Functions Overview Application exampleType Parameter Address Format Read/write For the MM2, we haveParameter User map data Address Modbus user map setupMM2 meter user map setting System configuration System configurationDB9 pin Description Setup Software Starting Configuration WizardModbus network properties Selecting the SUB-NETWORK PropertiesParameters configured for Pqmii 11 Connect devices to sub-network Connect Devices to the SUB- Network14 Select parameter window Select Parameters for Each Node17 Configuration report Queries 20 Save device file21 Expanding the tree 23 Changing configuration parameters for a query 25 Opening a saved configuration file Profibus network setup Miscellaneous WarrantyRevision history Release Dates10-2 6-3 P485 Modbus to Profibus Converter IndexPower Supply