This paper describes the features and structure of CAN bus and based on it's principle, gives the connection of each protectionunit with the system computer.
本文叙述了CAN总线的特点及结构，并运用CAN通信总线的原理，实现各保护单元与系统机的连接。
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As a try for circuit standardization, the system realizes the standard protection circuit unit and recovering-time circuit unit, which are connected to system through standard 44 pins' bus interface.
The Remote inspection system includes sewage disposal inspection center of the Environmental Protection Department and sewage disposal system of sewage Emission Unit.