How enable Modbus TCP in ABB AC800M controller to enable communication to scada?
We had an existing application on AC800M controller running perfectly from last two year, but need to connect PLC to a central scada via modbus TCP can anybody explain us how to configure in Control logic bulider ver 5.
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The better solution would be using of the OPC for AC800M and scada, supporting OPC.
For Modbus TCP most probably you will need CI867.
In case the SCADA is a master, define the variables to be exchanged as access variables in AC800M -> in COMLI section of access variables.
I'm not quite sure if ver. 5 supports directly using of CI867 in slave mode? There is such example in AKS applications section how to do that if not.
I personally never tried the above - modbus tcp with scada. But used it to connect AC800M to external Modbus TCP master (another PLC) in ver. 6