Dear HMS Support Team,
We are doing a PLC system replacement and our requirement is to integrate and establish new communication to the existing Modbus-Plus network. We tested using simplex network (working as intended) but on redundant configuration, we are facing some issues.
Below network architecture refers to our design and implementation using AB-7002. When we connect both the gateways to the BM85, both DCS (master) modules (Active and standby) goes to error/switchover state. Both gateways are polling the data properly from the (slave) redundant communication card of the PLC. We believe that the gateways shall be properly configured for redundancy to distinguish network queries from the master and/or standby modules.
Kindly provide configuration settings and/or advise if AB-7002 can meet this dual redundancy requirement.