Schneider Electric BM85 manual Slave Device Address, Communication Parameters, Port Priority

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3.4.3Slave 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.

3.4.4Communication 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:

VRTU (8-bit binary) mode, 9600 baud, 8 data bits, 1 or 2 stop bits, even/odd/no parity

VASCII (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.

3.4.5Port 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.

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Configuring the Modbus Models

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Contents August Page Preface PrefacePage Contents Vi Contents Chapter Configuring the Modbus ModelsDica0+. C+de/ D1.i*g D+3*+adi*g Chapter Configuring the Programmable ModelsAppendix a Compatible Devices and Cables Chapter Installing the BM85Viii Contents Figures Glossary IndexPage Introducing the BM85 Bridge/Multiplexers Chapter Introducing the BM85 Bridge/MultiplexersBM85 on Modbus Plus Bridge/Multiplexers on Modbus PlusModbus Plus Network BM85 Bridge/Multiplexers on Modbus Plus Mounting Methods Overview of BM85 ModelsAvailable Models Configuration Methods Operating PowerProgrammable Port Models BM85 With Typical RS232/485 Devices Downloading the Application Configuring the Programmable ModelsDeveloping the Application Part Number Description Software Development Tool KitContact Telephone Modbus Port Models BM85 With Typical Modbus Devices Bridge/Multiplexer Models for AC/DC Power Specifications AC/DC Power ModelsDevelopment Requirement Supplied by Customer Bridge/Multiplexer Models for DC/DC Power Specifications DC/DC Power ModelsSoftware Development Tool Kit Page Device Addressing and Message Routing Chapter Device Addressing Message RoutingRouting to Programmable Controllers Modbus Plus Message Routing PathsRouting to BM85 Bridge/Multiplexers Routing to Host Based Network AdaptersRouting to Serial Ports on BM85 Programmable Models Routing to a Single Slave Device on BM85 Modbus ModelsModbus Port Models Modbus Address ConversionProgrammable Port Models Silent Master Port Addressing Routing Examples Routing ExamplesFrom Address Routing Method From Routing PathPage Configuring the Modbus Models Chapter Configuring Modbus ModelsModels Covered in This Chapter An Overview of the Configuration ProcessBefore You Start Required Equipment Configuration Checklist Information You Will Need Modbus Port ParametersMaster Port TypeSlave NetworkSlave Device Address Setting the ParameterCommunication Parameters Port PriorityLink Timeout Timeout Examples How the Parameter Applies to the BM85 Modem BoosterModem Booster Example Table Location Modbus Address Five±Byte Routing Path Modbus Address MapIf a Match is Not Found Configuring the Modbus Models Silent Master Port Considerations Setting the Switches Configuring the Modbus PortsConnecting Power for the Configuration Connecting the Terminal Command Action Range Your Configuration CommandsParameter Port Default ConfigurationHelp Screens V5, V6, V7 Your Configuration ScreensEntering Commands Into Your Screens Saving the Configuration Printing the ConfigurationYour V1 Screen Layout Your V1 ScreenExample Using the V1 ScreenYour V2 or V3 Screen Layout Your V2 and V3 ScreensUsing the V2 or V3 Screen Your V4 Screen Layout Your V4 ScreenEnter Using the V4 ScreenBM85 Modbus Models Modbus Plus Address Switches Setting the Modbus Plus AddressHow to Set the RUN Mode Setting the RUN ModeWhen to Set the RUN Mode Hardware Error Codes 11 .. Hex Modbus Port Indicator CodesModbus Driver Error Codes 24 .. E Hex Indicators Pattern Hexadecimal DigitLLC Layer Error Codes 81 ... A3 Hex Modbus Plus Processor Interface Error Codes 34 .. HexPage Configuring the Programmable Models Chapter Configuring Programmable ModelsBefore You Start Equipment For Downloading the Application Program Equipment for Writing the Application ProgramDevelopment Software Files Overview of the Development SoftwareREADME.DOC Information File File Name PurposeTest and Demonstration Source Files Using the Test and Demonstration Source FilesMultitasking in Your Application Key Sequence PurposeInstallation Steps Installing the Development SoftwareDefault Parameters Key Sequence Purpose Alt±C Project close Preparing the BM85 for Downloading BM85 Programmable Models Configuration Switches Setting the Configuration SwitchesBM85 Programmable Models Modbus Plus Address Switches Error Codes Indicator Codes During DownloadingError Code Hexadecimal Meaning Normal Download CodesSetting the RUN Mode Installing the BM85 Installing the BM85Shelf/Panel Mounted Models Installing the BM85 HardwareMounting the BM85 Horizontal Mounting Rack Mounted ModelsVertical Mounting Part Number Mounting MethodRear Panel View Front Panel View Connecting DC Power Connecting the Power CablesConnecting AC Power BM85±000 Rear Panel BM85000 Connecting the Network and Serial CablesConnecting Dual Network Cables Connecting a Single Network CableConnecting Dual-Cable Units on Single-Cable Networks Connecting Serial Port CablesModbus and Serial Port Indicators Reading the IndicatorsPower and Ready Indicators Modbus Plus Port Status Indicators Modbus Plus Port Label Attaching Identification LabelsSerial Port Parameters Label Serial Port Parameters LabelPage Compatible Devices and Cables Appendix a Compatible Devices CablesAbbreviations Compatible Devices and CablesMaking `Quick Connections Modicon Devices and CablesCables for Modbus Master Devices Devices and Cables for Configuring Modbus PortsCables for Modbus Slave Devices Device Cable and Adapter CombinationModbus/RS232 Cable Wiring Diagrams Modbus/RS232 Cable Wiring DiagramsSerial Ports Pinout ± Modbus/RS232 BM85 Direction Purpose Modbus/RS232 Ports PinoutSerial Ports Pinout ± RS485 BM85 Direction Purpose RS485 Ports PinoutAddress AcknowledgementBaud rate BitBroadband Bridge PlusBus CarrierbandDistributed I/O DIO Drop AdapterDownload Drop cableGlobal Input Frame descriptorGlobal Output Host computerMedium LayerModbus Modbus PlusNetwork Option Module ModemNode OSI ModelPhysical Layer Peer-to-peer communicationPort ProtocolSerial port SegmentSlot time Specific InputTap SystemTerminator TokenPage Index IndexIndex