RSLogix 5000 MSG Socket to Modbus-TCP

id10t_error

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• Jun 5, 2020

• #1

If you click help and then click Vendor Sample Projects while in RSLogix 5000, a PDF will pop up with some neat examples. One example shows how to use a processor's serial port as a Modbus-Slave/Modbus-Master.

Is it possible to adapt the Modbus examples to talk Modbus-TCP using the RSLogix 5000 Message instruction?

Thanks for your help!

 

JaxGTO

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Apr 2009

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Kalieefornia

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• Jun 5, 2020

• #2

If you search the AB sample code library online there is a sample there to use just messaging to do Modbus TCP. It looks very complicated but it does work. I tried it once with a paperless chart recorder. But I ended up just using a Spectrum Controls Universal gateway as it was much simpler.

 

jkerekes

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Aug 2007

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NJ

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• Jun 5, 2020

• #3

Modbus TCP Add-On instructions for ControlLogix and CompactLogix controllers Ver 2.00.01

https://www.rockwellautomation.com/...-d358-fcd9-ec97abd3f9d8;deepLinking=undefined

 

Contr_Conn

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• Jun 5, 2020

• #4

I concur, these new Add-On instructions 2.00 mentioned above work and easy to configure.

 

id10t_error

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• Jun 8, 2020

• #5

Thanks for the Responses!

The Modbus/TCP AOI needs at least version 20 with an 1756-EWEB from what I read. I have upgraded my 1756-L55 to a 1756-L63 with a 1756-ENBT. Next, I will need to replace the ENBT?

 

Contr_Conn

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• Jun 8, 2020

• #6

Modbus AOI should work with Ver 17 of higher.
L63 can run Ver 20.
But 1756-ENBT does not support Sockets.
You need a modern module like EN2T or old EWEB