In this paper,several methods of Redundancy in CAN Bus are introduced,and a new method—Net-Redundancy structure is put forward,the design of a CANBUS node for power-module control system based on ARM7TDMI kernel is presented.

Precision clock synchronization method over network redundancy system;

In this paper, a basic design problem of DCOM component program in a network redundancy environment is presented.

In conjunction with the conventional configuration principles of the protection device,the appropriate network redundancy method is proposed,and then the network structure map of the actual typical bay is given and the simple and practical method of VLAN(virtual local area network) is proposed.

this paper describes the application of a newly redundant PLC system in power plants through integrated water pump controller system,and briefly introduces the principle of FINS commands based on Ethernet system and the method of building redundant network.

Reliability of control system communication based on redundant network is analyzed.

In the system,advanced database system FactureSuite A2 was used as management platform and popular industry redundance ring network architecture was adopted.