MODBUS function codes 22 and 23 in AC500

Hello,

Can anybody please confirm whether MODBUS function codes 22 and 23 can be used for communication via coupler modules CM574 and CM597. In abb documents, it is mentioned that onboard serial and ethernet ports support the two function codes.However,there is no info on support by coupler modules.


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rahilmohammed   

asked 2 months ago
Closed



Best Answer

1

The onboard Ethernet port support Modbus TCP function code 22 and 23.

CM597-ETH only support FC 23, not FC 22.

CM577-ETH do not support FC 22 and FC 23.

Chooi   

answered 2 months ago


 


By rahilmohammed on 6/12/2017 | Like (0) | Report

Hi,
In second line you are saying CM597 supports FCT 23 and in third line you are saying,it doesnot.Kindly clarify.Also what about CM574.


By Chooi on 6/12/2017 | Like (0) | Report

Correction done.


By rahilmohammed on 6/12/2017 | Like (0) | Report

Thank you for the clarification.What about CM574?


Add New Comment


Answers

1

The onboard Ethernet port support Modbus TCP function code 22 and 23.

CM597-ETH only support FC 23, not FC 22.

CM577-ETH do not support FC 22 and FC 23.

Chooi   

answered 2 months ago


 


By rahilmohammed on 6/12/2017 | Like (0) | Report

Hi,
In second line you are saying CM597 supports FCT 23 and in third line you are saying,it doesnot.Kindly clarify.Also what about CM574.


By Chooi on 6/12/2017 | Like (0) | Report

Correction done.


By rahilmohammed on 6/12/2017 | Like (0) | Report

Thank you for the clarification.What about CM574?


Add New Comment



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