关于PLC的简单问题,急急急!!!

2025-03-04 14:55:35
推荐回答(6个)
回答1:

没有查资料,除不能确定第五题外,第一题应选D,其余感觉你答的都正确。

回答2:

我来回答一下吧,这学期教PLC的。

第二题错误,继电器输出是最常用的输出

应该选D,没有所谓二极管输出

回答3:

继电器是很常用的了

回答4:

我现在就讲怎么用梯形图编的,可能会好理解一点。
你可以用电机m1---m6和磁选料器ya的热继电器的,把它们的常开接成并联,并联之后再接hl10灯泡的线圈。就完成了,只要m1---m6和磁选料器ya任意一个过载,都会让它们各自的热继电器动作,热继电器常开闭合,hl10就会点亮。发出警告。
上面做完了只能实现过载时候,灯泡点亮,要实现ha电铃断续报警20s,还需要在hl10左边的节点处接上定时器,定时时间(tx)k200,(x为你设置的定时器编号)。
接着往下编就是,利用上面的定时器(tx)常闭触点。串联上升沿或者下降沿触发,最后串联电铃的线圈输出。就这样就能实现电铃的断续报警了。编好了。
祝你成功!!!

回答5:

当一个常闭触点断开时,显示不亮。

回答6:

实际控制中,当一个输入点的
常闭触点
断开时:
在PLC程序里面该输入点是显示OFF(不亮)的。

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