5．PC接口法
因为数控机床各单元（除驱动器外）与数控体系之间都是经过PC接口（1／O）实现信号的传递和操控，因而，很多缺点都会经过PC接口信号反映出来，咱们能够经过查阅PC机床侧的1／O信号确诊各种杂乱的机床缺点或区分缺点在数控体系仍是在机床电气。其办法很简略，即请求了解悉数PC（机床侧）接口信号的现行状况和正常状况（或制成一张表格），确诊时，经过对悉数PC（机床侧）接口信号的现行状况和正常状况逐个查看比对，找出有缺点的接口信号，然后依据信号的外部逻辑关系，查出缺点因素。当你了解了PC接口信号后，使用这种PC接口比对法，十分简洁快方便，而且避免了分板杂乱的梯形图程序。
NEW SED MANUAL BONNET AND HAND
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HACH EC30 pH METER PART # 50100-60
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