GE P485 instruction manual Modbus network configuration, Parameter Description Range

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SOFTWARE OVERVIEW

Modbus network configuration

OVERVIEW When controlling a Modbus sub-network with the P485 it is important to understand functions during starting up. If the P485 starts scanning nodes on the sub-network, before data is received from the fieldbus control system (fieldbus master), values of ‘00’ may be transmitted to the nodes before data is updated the first time from the fieldbus.

See Input/output data during startup on page 8–4for information on how to block transactions until valid data is received.

SERIAL INTERFACE To be able to communicate on the Modbus network, various communication settings SETTINGS needs to be configured. To gain access to these settings, select ‘Modbus Network’ in the

Navigation window.

Parameter	Description	Range

Bit rate	Selects the bit rate.	1200 to 57600

Data bits	Selects the number of data bits.	7, 8

Parity	Selects the parity.	None, Odd, Even

Physical standard	Selects the physical standard. This setting	RS232, RS422, RS485
	activates the corresponding signals on the subnet
	connector.

Start bits	Only one start bit is supported.	1

Stop bits	Either one or two stop bits can be selected.	1, 2

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 conventionsAbout the P485 Modbus to Profibus Converter FeaturesFeatures Communications SpecificationsMechanical Housing OrderingElectrical installation InstallationQuick install 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 Introduction Installation procedureSoftware overview 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 DescriptionFieldbus 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 Release Dates WarrantyMiscellaneous Revision history10-2 6-3 P485 Modbus to Profibus Converter IndexPower Supply