The UDC920BE01 3BHE034863R0001 redundant controller adopts the fault-tolerant design of hardware and software, and adopts the way of synchronous execution of controllers in the operation process, and the main controller is allowed to output commands, and adopts the innovative exception-reporting high-reliability redundancy strategy to ensure that the controller switching can be completed at any time, and the switching time is less than 2 ms. It avoids the problem of the standby controller not being able to take over the work properly after redundancy switching in the traditional design. Avoid the traditional design, the backup controller will not be able to work normally after the redundancy switchover.

UDC920BE01 3BHE034863R0001 communication bus has two modes of communication: local and remote. It adopts Keyuan eBus communication bus, with a communication rate of 3.125Mpbs, and a single-layer, multi-channel parallel branch structure. Each (pair of) controller local communication interface supports up to 12 I/O branches with a total of 96 modules; remote communication supports up to 12 remote sites, and each remote site supports up to 6 I/O branches with a total of up to 24 branches with a total of 192 IO modules.