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I am working in upgrading metering control system and facing problem in getting MODBUS addresses of Omni flow computer tags. the old system architecture is the flow computer is connected directly to workstation by serial cable. HMI software is factorylink with OPC server to connect the FCs beside PLCs.
i can read the tags in OPC form, but can't find the original Modbus addresses that i can use in my new design which deal with Modbus protocol entering S7-400.
advice pls
i can read the tags in OPC form, but can't find the original Modbus addresses that i can use in my new design which deal with Modbus protocol entering S7-400.
advice pls