280-PWRM24A-M1;
280-PWRM24A-M1现货；
280-PWRM24A-M1供应。
①PLC工作可靠，出现故障的情况不多，这大大减轻了维修的工作量。这在讲述PLC的第三个特点时，还将进一步介绍。

②即使PLC出现故障，维修也很方便。这是因为PLC都设有很多故障提示信号，如PLC支持内存保持数据的电池电压不足，相应的就有电压低信号指示。而且，PLC本身还可作故障情况记录。所以，PLC出了故障，很易诊断。同时，诊断出故障后排故也很简单。可按模块排故，而模块的备件市场可以买到，进行简单的更换就可以。至于软件，调试好后不会出故障，再多只要依据使用经验进行调整，使之完善就是了。


　　11、好学近乎知，力行近乎仁，知耻近乎勇。——《中庸》
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