Description
PLC控制系统信号电缆的选择与敷设应严格按照有关规定执行。屏蔽电缆的屏蔽层应按以上要求进行接地。为了提高PLC控制系统的抗干扰能力，PLC控制系统开关量输入／输出信号宜选用阻燃型对绞铜网屏蔽电缆。
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