3BHE024642R0101 GCD207B101 ABB

3BHB003689 ABB DCS
3HAB3700-1 ABB
3HAB8101-8/08Y ABB
3HAC025466-001 ABB
3HAC031683-001 ABB
3HAC14550-2/09A ABB
3HAC14550-4/04B ABB
3HAC17326-1/02 ABB
3HNA000512-001 ABB
3HNE 00313-1 TILLV.0317 64-25653 ABB
3HNE00313-110 ABB
61615-0-1200000 ABB
AI610 ABB
AI625 ABB
AI835 ABB
AO610 ABB

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描述

PLC有两种基本的工作模式，即运行(RUN)模式与停止(STOP)模式。在运行模式，PLC通过反复执行反映控制要求的用户程序来实现控制功能。为了使PLC的输出及时地响应随时可能变化的输入信号，用户程序不是只执行一次，而是不断地重复执行，直至PLC停机或切换到STOP工作模式。

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