3HAC15521-2 ABB

ABB 3HAC1515882-1
ABB 3HAC17105-1
ABB 3HAC12708-1
ABB 3HAA1001-186
ABB 3HAC15882-1

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Description

并将它们存入I/O映象区中相应的单元内,输入采样结束后,转入用户程序执行和输出刷新阶段,即使输入状态和数据发生变化,I/O映象区中的相应单元的状态和数据也不会改变。在用户程序执行阶段,PLC按由上而下、先左后右的顺序依次地扫描程序(梯形图)


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