1C31234G01 WESTINGHOUSE 步序语句逐句扫描

WESTINGHOUSE 1C31234G01
WESTINGHOUSE 1C31234G01
WESTINGHOUSE 1C31234G01
WESTINGHOUSE 1C31234G01
WESTINGHOUSE 1C31238H01
WESTINGHOUSE 1C31238H01
WESTINGHOUSE 1C31238H01
WESTINGHOUSE 1C31238H01
WESTINGHOUSE 1C31238H01
WESTINGHOUSE 1C31238H01
WESTINGHOUSE 1X00024H01
WESTINGHOUSE 1X00024H01
WESTINGHOUSE 1X00416H01
WESTINGHOUSE 3A99132G01
WESTINGHOUSE 3A99132G02
WESTINGHOUSE 3A99158G01
WESTINGHOUSE 3A99200G01

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Image 2

Description

程序执行阶段根据PLC的程序扫描原则,PLC先左后右,先上后下的步序语句逐句扫描。当指令涉及到输入、输出状态时,PLC从输入映象寄存器中“读入”对应输入映象寄存器的当前状态,然后,进行相应的运算,运算结果再存入元件映象寄存器中,对元件映象寄存器来说,每一个元件会随着程序执行过程而变化。

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