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FS-8700-01 Modbus RTU/ASCIIFS-8700-01_Modbus_RTU.doc Driver Manual Table of Contents

FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fieldserver.com

Tel: (408) 262 2299 Fax: (408) 262 2269 Toll Free: (888) 509 1970 email: suppo[email protected]

TABLE OF CONTENTS

1 Modbus RTU/ Modbus ASCII Description ....................................................................................................... 3

2 Driver Scope of Supply ................................................................................................................................... 3

2.1 Supplied by FieldServer Technologies for this driver ................................................................................... 3

2.2 Provided by Supplier of 3

Party Equipment ............................................................................................... 3

3 Hardware Connections ................................................................................................................................... 4

4 Data Array Parameters ................................................................................................................................... 5

5 Configuring the FieldServer as a Modbus RTU or Modbus ASCII Client. .......................................................... 6

5.1 Client Side Connection Parameters .............................................................................................................. 6

5.2 Client Side Node Parameters ....................................................................................................................... 7

5.3 Client Side Map Descriptor Parameters ....................................................................................................... 8

5.3.1 FieldServer Related Map Descriptor Parameters ..................................................................................... 8

5.3.2 Driver Related Map Descriptor Parameters ............................................................................................. 8

5.3.3 Timing Parameters ................................................................................................................................... 9

5.3.4 Map Descriptor Examples. ..................................................................................................................... 10

6 Configuring the FieldServer as a Modbus RTU or Modbus ASCII Server ........................................................ 11

6.1 Server Side Connection Parameters ........................................................................................................... 11

6.2 Server Side Node Parameters .................................................................................................................... 12

6.3 Server Side Map Descriptor Parameters .................................................................................................... 13

6.3.1 FieldServer Specific Map Descriptor Parameters ................................................................................... 13

6.3.2 Driver Specific Map Descriptor Parameters ........................................................................................... 13

6.3.3 Map Descriptor Examples ...................................................................................................................... 14

6.3.4 Slave_Id .................................................................................................................................................. 14

Appendix A. Useful Features – Modbus RTU ........................................................................................................ 15

Appendix A.1. Managing Floating points with Modbus ........................................................................................... 15

Appendix A.1.1. Transferring non-integer values with one register ................................................................. 15

Appendix A.1.2. Transferring 32 bit values with two registers ......................................................................... 16

Appendix A.2. Node_Offline_Response................................................................................................................... 16

Appendix B. Troubleshooting ............................................................................................................................... 18

Appendix B.1. Server Configuration of System Station Address.............................................................................. 18

Appendix C. Vendor Information ......................................................................................................................... 19

Appendix C.1. Connection to York Modbus Microgateway ..................................................................................... 19

Appendix C.2. Modbus ASCII - Examples of FieldServer setup for typical clients .................................................... 19

Appendix C.2.1. FieldServer with GE Cimplicity as client .................................................................................. 19

Appendix C.2.2. FieldServer with Intellution FIX as a client .............................................................................. 19

Appendix D. Reference ........................................................................................................................................ 21

Appendix D.1. Data Types ........................................................................................................................................ 21

Appendix D.2. Single Writes .................................................................................................................................... 21

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