描述
安装与布线要采取一定的抗干扰措施。一般PLC电源都采用带屏蔽层1：1隔离变压器供电，在有较强干扰源的环境中使用时，应将屏蔽层和PLC浮地端子接地，接地线面积不能小于2mm2。接地线要采取独立的方式，不能用与其它设备串联方式接地。PLC电源线，I/O电源线，输入、输出信号线，交、直流线都应尽量分开布线。开关量信号线与模拟量信号线也应该分开布线，后者应用屏蔽线，并且将屏蔽层可靠接地等等。
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