Description
造成传输信号线短路或断路(由于机械拉扯,线路自身老化,特别是鼠害),当传输信号线出故障时,现场信号无法传送给PLC,造成控制出错;机械触点抖动,现场触点虽然只闭合一次,PLC却认为闭合了多次,虽然硬件加了滤波电路
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