In our project, the Onboard Ethernet port of PM583 ETH is using for IEC104 protocol, CM597 using for Redundancy (HA) between A & B PLC (UDP Protocol), and another set of CM597 using for HMI CP600_CP676 (Modbus TCP ). Now the Customer not agreeing to provide redundancy connection via another module. as per him it should be from the onboard Ethernet (as Proposal drawing).
Kindly suggest any CM module which can handle IEC104 protocol ? or PM591 2ETH controller can handle both IEC104 & UDP protocol with the two on board port?