CI853K01 ABB 梯形图编程

ABB NPBA-12
ABB CI855-1
AGILENT 82357B
AGILENT G1946-80060
AI-TEK 70085-1010-330
AJINEXTEK AMW-MC12-DB96P
ALLEN BRADLEY 1756-CN2R
ALLEN BRADLEY 1756-EN2TR/C
ALLEN BRADLEY 2711P-T12W22D9P
ALLEN BRADLEY 1756-CN2R
ALLEN BRADLEY 1756-CN2R
ALLEN BRADLEY 2711P-T12W22D9P
ALLEN-BRADLEY 1746-HSCE
ALLIED TELESIS AT-8000S/24POE
ALSTOM EP3-E-4-A

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Description

PLC的CPU内有指示程序步存储地址的程序计数器,在程序运行过程中,每执行一步该计数器自动加1,程序从起始步(步序号为零)起依次执行到最终步(通常为END指令),然后再返回起始步循环运算。PLC每完成一次循环操作所需的时间称为一个扫描周期。不同型号的PLC,循环扫描周期在1微秒到几十微秒之间。PLC用梯形图编程,在解算逻辑方面,表现出快速的优点

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