Table Of Contents - SMC Sierra Monitor FieldServer Driver Manual

TABLE OF CONTENTS

1 Modbus TCP/IP Description ................................................................................................................ 4
2 Driver Scope of Supply ....................................................................................................................... 4
2.1 Supplied by Sierra Monitor for this driver ............................................................................ 4
2.2 Provided by the Supplier of 3
2.2.1 Hardware ............................................................................................................................... 4
3 Hardware Connections ........................................................................................................................ 5
4 Data Array Parameters ........................................................................................................................ 6
5 Configuring the FieldServer as a Modbus TCP/IP Client ................................................................. 7
5.1 Client Side Connection Parameters ............................................................................................... 7
5.2 Client Side Node Parameters ......................................................................................................... 8
5.3 Client Side Map Descriptor Parameters ......................................................................................... 9
5.3.1 FieldServer Specific Map Descriptor Parameters ................................................................... 9
5.3.2 Driver Specific Map Descriptor Parameters ............................................................................ 9
5.3.3 Timing Parameters ................................................................................................................ 10
5.3.4 Map Descriptor Examples ..................................................................................................... 11
6 Configuring the FieldServer as a Modbus TCP/IP Server ............................................................. 12
6.1 Server Side Connection Parameters ............................................................................................ 12
6.2 Server Side Node Parameters ...................................................................................................... 13
6.3 Server Side Map Descriptor Parameters ...................................................................................... 14
6.3.1 FieldServer Specific Map Descriptor Parameters ................................................................. 14
6.3.2 Driver Specific Map Descriptor Parameters .......................................................................... 14
6.3.3 Map Descriptor Examples ..................................................................................................... 15
6.3.4 Slave_ID ................................................................................................................................ 15
6.3.4.1 Slave_ID Lookup in Table .............................................................................................. 15
Appendix A. Useful Features ................................................................................................................... 16
Appendix A.1. Managing Floating Points with Modbus ........................................................................... 16
Appendix A.1.1. Transferring Non-integer Values with One Register ................................. 16
Appendix A.1.2. Transferring Float/32 bit Values with Two Registers ................................ 16
Appendix A.2. Node_Offline_Response .................................................................................................. 17
Appendix A.3. Splitting Registers into Bytes or Bits ................................................................................ 18
Appendix A.4. Reading Device Identification .......................................................................................... 18
Appendix A.4.1. Client Side Map Descriptor ............................................................................. 18
Appendix A.4.2. Server Side Map Descriptor ............................................................................ 19
Appendix A.5. Broadcasting Write Messages ......................................................................................... 19
Appendix A.6. Reading Scattered Addresses ......................................................................................... 20
Appendix B. Troubleshooting .................................................................................................................. 21
Appendix B.1. Server Configuration of System Station Address ............................................................ 21
Appendix B.2. Modbus TCP/IP Connection Error Descriptions .............................................................. 21
Appendix B.3. Understanding Max Concurrent Messages ..................................................................... 21
Appendix C. Reference ............................................................................................................................. 23
Appendix C.1. Data Types ...................................................................................................................... 23
Appendix C.2. Single Writes .................................................................................................................... 23
Appendix C.3. Driver Error Messages ..................................................................................................... 23
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Party Equipment ............................................................... 4
Table of Contents
Modbus TCP/IP Driver Manual