描述
查找电气毛病点,要点要放在PLC的外围电气元件上,不要老是置疑PLC硬件或程序有疑问,这对迅速维修好毛病设备、迅速恢复生产是十分重要的,因而笔者所谈的PLC控制回路的电气毛病维修,要点不在PLC自身,而是PLC所控制回路中的外围电气元件。
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