I have been tasked with using an existing PLC5/MCM3100 application to talk to a bank of Omni flow computers. We have two 3100s one of which has an open port 1.
I have read the user manual numerous times and have looked at the sample ladder code along with our existing code which was done by someone else.
My assumptions:
set up the MCM port 1 as the Master and the individual Omnis as Slaves each with a different address and connect via an RS-485 network.
How do I tell the MCM to poll each address? Is this done in the Command list, BTW Block IDs 80-99? Will each command only poll one register in the addressed Omni? In other words will Block ID 80 Command 1 poll register for flow, Command 2 poll register for pressure, etc?
Any nudges would be appreciated.
Thanks
