StageAge54 Posted June 8, 2022 Report Share Posted June 8, 2022 Hello friends.I am using a PLC communicating with an UAC CB 01RS4. What I want to achieve is an meter MODBUS measuring the volt and amp value of a load, connected to a PLC via Modbus, this PLC is connected to a computer via ethernet.I managed to establish communication but didn't suceed. Indeed, All attempted sessions are fails and the status is 3 - Connection exists, but there is an error in the MODBUS commands. I have added the MODBUS module to the PLC on UniLogic, and all informations (Modbus panel, baud rate, data bit....) are correct. Then I've added a Master -> 'registers periodic' -> the modbus communication is the UAC-CB-RS4 and the adress is 5000 (which is the adress register of the Voltage measurement content (for the automate). I also tried to add a slave but still I have the same errors. If you have any clue on why I have a connection but the MODBUS command has errors, please tell me 😀. Thank you very much !! Quote Link to comment Share on other sites More sharing options...
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