Control systems failover mechanisms

«Warm» redundancy, data aggregation via RS-485  

Two ENCS-3's are coupled with a CAN. Only one of the RTUs is active at any time. It polls devices and communicates with the upper level. The active RTU reports its status to the inactive one and switches roles if it loses connection with the polled devices.

«Warm» redundancy, data aggregation via RS-485


«Hot» redundancy, data aggregation via RS-485

Two and more ENCS-3's operate independently and poll the same devices being connected to the different ports.

«Hot» redundancy,data aggregation via RS-485


Ring data aggregation (RSTP)

Two and more ENCS-3's poll the same devices via LAN (ring topology). Data are transmitted to the higher level to two independent networks.

Ring data aggregation (RSTP)


Data aggregation via PRP

Two and more ENCS-3's operate in «hot» redundancy, data are transmitted to the higher level to two independent networks or via PRP.

Data aggregation via PRP