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Old December 14th, 2017, 11:10 PM   #1

govind@sara is offline
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Location: Dehradun
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GE Fanuc Versamax Pro PLC read/write registers values using TCP/IP or RTU in c#

Good morning to all...
I am a new bee in C# to GE Fanuc Versamax Pro PLC communication.....
So I want to read/write registers values using c# whether via eathernet or RTU communication for Slave

Pls help me out....

Thanks in advance......
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Old December 15th, 2017, 07:11 AM   #2

gclshortt is offline
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I am assuming you want communications using Modbus TCP. This is an Ethernet connection to the PLC and is Client (Master) / Server (Slave) arrangement.

Take a look at EasyModbus. This software will handle the communications to the controller for you in your C# program. It is a free download.

Hope this helps you out.
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Old December 17th, 2017, 11:54 PM   #3
Mike Lamond
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Mike Lamond is offline
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Location: Syracuse, NY
Posts: 77
Fair warning, Modbus does not give you access to all of the GE PLC data types. Most important will be that your application will have to read/write %Q output coils instead of %M internal coils. If you want to use the native GE protocol, the manuals listed below will help. You can download them from I've never needed to write this, so I don't know of any existing code to get you started.

TCP/IP Ethernet Communications for the Series 90* PLC User's Manual
GFK-1541B February 2010

Series 90*PLC Serial Communications Userís Manual
GFK-0582D April 2010

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Old December 18th, 2017, 01:43 AM   #4

govind@sara is offline
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Location: Dehradun
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Hello guys
I just want to communicate with GE versamax PLC and wanna read/write registers values using a my own UI so pls help me out if you have any solution I need code for it... either using TCP/IP or serial port communication if anybody has any idea so please replay.....

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