试题与答案

触摸屏实现按钮输入时,要对应PLC内部的()A、输入点XB、内部辅助继电器MC、数据

题型:单项选择题

题目:

触摸屏实现按钮输入时,要对应PLC内部的()

A、输入点X

B、内部辅助继电器M

C、数据存贮器D

D、定时器

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B

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