P0917YJ FBM240 FOXBORO

P0922RK FBM228 and FBM222 FOXBORO
P0922VC FOXBORO
P0922VT FBM214 FOXBORO
P0922VU FBM215 FOXBORO
P0922VV FBM216 FOXBORO
P0922VW FBM218 FOXBORO

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Description

输入信号后PLC经过多长时间才能有一个对应的输出信号,否则,就不能正确并精确地解决系统各部件之间的配合问题。从PLC的工作过程可知:当PLC工作在程序执行阶段时,既使输入状态发生了变化,即输入状态寄存器的内容发生变化


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