IS2020JPDFG01 替您省钱 货期火速

1746-P2
DO810
170ADM35010
1756-OB32
PS-02
6EP1334-2BA20
6ES7134-4NB01-0AB0
IC200MDL940
1769-IQ32
1794-IM16
KJ4001X1-CG1

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描述

在用户程序执行过程中,只有输入点在I/O映象区内的状态和数据不会发生变化,而其他输出点和软设备在I/O映象区或系统RAM存储区内的状态和数据都有可能发生变化,而且排在上面的梯形图,其程序执行结果会对排在下面的凡是用到这些线圈或数据的梯形图起作用;相反,排在下面的梯形图,其被刷新的逻辑线圈的状态或数据只能到下一个扫描周期才能对排在其上面的程序起作用。

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