How to communicate Pm573-eth 2 nos. & 1 Compact hmi 800.
I don't understand your problem. The ac500 control builder suite comes with the OPC server. Install it on your system, connect the CPU's with ethernet, download your program and the opc server should have the information which tags are availible. Connect your SCADA to the OPC server and read/write the values.
Please make clear what exacty your problem is.