PLC控制系统故障率情况是怎样的？ 1）CPU与存储器故障率占5%。 2）I/O模块故障率占15%。 3）传感器及开关故障率占45%。 4）执行器故障率占30%。 5）接线等其他方面故障率占5%。 02 PLC的故障多发点有哪些？ 1）继电器、接触器。 2）阀门、闸板。 3）开关、极限位置、安全保护、现场操作的一些元件或设备。 4）PLC系统中的子设备。 5）传感器、仪表。 6）电源、地线、信号线的噪声。 联系人：林工
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