Schneider Electric LUFP7 user manual Connecting the Gateway to the Modbus Network, LU9GC03

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2. Hardware Implementation of the LUFP7 Gateway

2.5. Connecting the Gateway to the Modbus Network

Three typical examples of Modbus connection for the gateway and its slaves are shown below. There are many other possible Modbus connections, but they are not covered in this document.

2.5.1. Examples of Modbus Connection Topologies

•“Star” topology: This topology uses LU9GC03 Modbus hubs, which have 8 female RJ45 connectors. These hubs should be placed close to the Modbus slaves to which they are connected using VW3 A8 306 R•• cables. On the other hand, the nature of the cable connecting the LUFP7 gateway to one of these hubs will depend on the network architecture, so long as there is a male RJ45 connector at each end. If necessary, one or two line terminations may be directly connected to the hubs.

The connections are shown below:

LUFP7 gateway

Modbus

VW3 A8 306 R••

Modbus hubs

LU9GC03

Line

termination

Line

termination

Towards 8 Modbus slaves

16

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Contents LUFP7 Page LUFP9 Page Table of Contents Introduction to the User Guide IntroductionTerminology Introduction to the LUFP7 GatewayDPM1 Notational ConventionsModbus Additional DocumentationIntroduction to the Communication System Architecture Profibus-DP Master Upstream network Profibus-DPPrinciple Used to Configure and Operate the LUFP7 Gateway Modbus Network ABC Configurator LUFP7 gateway Hilscher Profibus-DP Configuration Modbus RTU Hardware Implementation of the LUFP7 GatewayOn Receipt Powering the Gateway Mounting the Gateway on a DIN RailMounting the gateway Connecting the Gateway to the Modbus Network LU9GC03Examples of Modbus Connection Topologies LUFP7 Gateway Pin Outs TSXCSA00Wiring Recommendations for the Modbus Network 120 ΩHubs, drops, taps, and line terminations Pin Outs LUFP7 plug --- 9-point SUB-D female Connecting the LUFP7 gateway to the Profibus-DP NetworkNAD 911 04/03 connector Point SUB-D male CablesGND Wiring Recommendations for the Profibus-DP NetworkNAD 911 04 or 03 connector Configuring the Profibus-DP Communication Features Encoding the Gateway AddressNo Internal Line Termination Address = Signalling Profibus-DP Software Implementation of the GatewayIntroduction System ArchitectureConfiguring the Motor Starters Modbus Cycle TimeManaging Degraded Modes Setting Up the Hardware Configuration under PL7 PRO Gateway Configuration under PL7 PRO and SyConSelecting and Adding the Profibus-DP Master Station Creating a Profibus-DP Network under SyConSetting up the Gateway Description Files Selecting and Adding the Gateway to the Profibus-DP Network Editing and Configuring the GatewaySoftware Implementation of the Gateway Possible values Saving and Exporting the Profibus-DP Network ConfigurationDiagnostic length OptionalConfiguring the Gateway I/O under PL7 PRO IW4.0.1 Service PLC input DescriptionService PLC output Description IW4.0Sample reading of a motor starter parameter Description of Services Assigned to Gateway Inputs/OutputsAllocating Symbols to the Gateway Inputs and Outputs Developing a Profibus-DP Application Using and Monitoring the TSX PBY 100 Coupler ConfigurationControl/Status Byte field Gateway Initialization and DiagnosticsDisabled 5.3.2 Profibus-DP Master Control Word Full ManagementProfibus-DP Master Control Word Fbdu Modbus exchange startup Gateway Status Word Bits Description Abchssend New gateway diagnostic11EC Error code associated with the Modbus network ED Error data item associated with the Modbus networkDescription of the error Diagnostic OnlyBits Description Abcdu Modbus exchanges activated Simplified Operation Connecting the Gateway to the Configuration PC Configuring the GatewayRS-232 Link Protocol GNDImporting the Gateway Configuration Installing AbcConfMonitoring the Content of the Gateway’s Memory Transferring a Configuration to the GatewayConfiguring the Gateway Deleting a Modbus Slave Procedure for deleting a Modbus slaveCopying a previously configured Modbus slave Adding a Modbus SlaveAdding a new type of Modbus slave Importing/exporting a Modbus slave configuration Replacing a periodic input data element Changing the Periodic Data Exchanged with a Modbus SlaveReplacing an Output Periodic Data Element Increasing the Amount of Periodic Input Data Configuring the Gateway Configuring the Gateway Configuring the Gateway IW4.0.19 IW4.0.16IW4.0.17 IW4.0.18Configuring the Gateway Configuring the Gateway Configuring the Gateway Configuring the Gateway Deleting Aperiodic Parameter Data QW4.0.16QW4.0.17 Configuring the Gateway Configuring the Gateway Managing the downstream Changing a Modbus Slave Configuration Changing the name of a Modbus slaveChanging the Address of a Modbus slave With the TeSys U Motor Starters Adding and Setting Up a Modbus CommandModbus response Name of the Modbus command Modbus queryWith a Generic Modbus Slave CPU stop/failure LUFP7 gateway Profibus-DP Modbus RTU Configuration Description Element Configuring the QueryConfiguring the Gateway Default communication mode. The query is transmitted Configuring the Response Configuring the Content of the Query Frame Field Size Description Frame Configuring the Content of the Response Frame Mode. The default value, CRC, should not be changedStart byte fields Adding a Special Modbus Command Modbus Commands Based on Standard CommandsModbus Commands which Can Be Completely Changed by the User Fieldbus Element Configuring the General Characteristics of the GatewayABC Element Sub-Network Element Configuring the Gateway Adding a Broadcaster Node Appendix a Technical Characteristics Communication CharacteristicsEnvironment Communications between other stations Performance Results Inputs General data Identification number Name of the related GSD file GSD File ContentAppendix B LUFP7 Gateway GSD File Identification NumberMaximum response time of the gateway Input Appendix C Default Configuration Configuring Modbus Exchanges 16#1016#06 Content of the Gateway’s Dpram Memory Service Address Size DescriptionInput Data Memory Area Output Data Memory Area Overview of the LUFP7 Tutorial Example Appendix D Sample Use under PL7 PROLUFP7 Gateway Initialization and Diagnostics See note IEC61915 command register Controlling and Supervising the 8 TeSys U Motor StartersTeSys U status register IEC61915 Reading and Writing any TeSys U Motor Starter Parameter Appendix D Sample Use under PL7 PRO Appendix D Sample Use under PL7 PRO Appendix E Profibus-DP Data and Diagnostics Gateway Profibus-DP DiagnosticsBytes Structure Description Bytes Name Description Gateway Configuration DataBytes Name Value General Gateway Information108 Appendix F Modbus Commands Read Holding Registers Command 16#03 Preset Single Register Command 16#06Frame Field Value or properties Modbus Protocol Exception Responses Preset Multiple Registers Command 16#10Code Name Description of the exception Exception LUFP7 Quantum Appendix F Concept and Quantum PLCLeft intentionally blank 114 Page User’s Manual LUFP7 V1.1 2003-05