1756-L63 AB

6RY1243-0DA01
1394-SR9A300W
2711-K5A2L1
2711-K10C20
6181P-15TPXP
EVS9328-ESV004
KeTop-T40-001/58599/10
2711P-K6C20D
FOXBORO-H92HP
2711P-B15C4A8
max-4/11/03/016/08/1/0/00
1761-L20BWB-5A

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描述

根据PLC梯形图程序扫描原则,按先左后右先上后下的步序,逐句扫描,执行程序。遇到程序跳转指令,根据跳转条件是否满足来决定程序的跳转地址。从用户程序涉及到输入输出状态时,PLC从输入映象寄存器中读出上一阶段采入的对应输入端子状态,从输出映象寄存器读出对应映象寄存器,根据用户程序进行逻辑运算,存入有关器件寄存器中。对每个器件来说,器件映象寄存器中所寄存的内容,会随着程序执行过程而变化。

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