02.DCS故障查找方向
DCS维护内容多且复杂，所以在出现故障的时候，容易没有头绪，一般常见故障，可以从以下十一个方向入手：
1、通信网络故障
通信网络类故障一般易发生在接点总线、就地总线处或因地址标识错误所造成。
2、节点总线故障
节点总线的传送介质一般为同轴电缆，有的采用令牌信号传送方式，有的采用带冲突检测的确良多路送取争用总线信号传送方式。不论采用哪种方式，当总线的干线任一处中断时，都会导致该总线上所有站及其子设备通讯故障
。
3
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PWA40332-01L BENTLY NEVADA
PWA 191898-02-15 BENTLY NEVADA
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31000-16-10-00-225-03-02 BENTLY NEVADA
19195-01-15-XX-00-01 BENTLY NEVADA
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