運行禁止模式運行/禁止模式會導致PLC中所有的物理輸出回歸它的默認狀態(tài)。輸入繼續(xù)被掃描，邏輯也繼續(xù)被執(zhí)行。–般是激活單元的CPU會處于“運行/禁止”模式。下列是HSB控制策略中使用運行/禁止模式的要點1.如果一個單元處于運行/禁止模式中，它的#LOC_ RDY%S變量和另一個單元中的REM_RDY%S變量會被清零，并且RMX模塊行的指示燈會變成off。這指示了這個單元(#LOC_ _RDY參數(shù)為off)的輸出是無效的。

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