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M91 2 R2C Modbus comunication


knt2009

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Dear all,

 

I am new on this forum, even though I an using the Unitronics PLC for more than 10 years now. I have a problem with the RS485 MODBUS communication to the frequency converter. After I have established the communication to the converter I am not able to connect to the PLC with the programing computer. I have tried all possible settings of the comunication protocol bur without sucess.

 

Can somebody give me some advice what to do? Is there a possiblity to do somehow a reset of the PLC?

 

I am using M91 2 R2C

 

Thanks and best regards,

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