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樓主  發(fā)表于: 2008-02-22 23:33
請問(wèn)各位大俠：
　　PLC中輔助繼電器M系列的指令使用的心得是什么啊
　　我雖然是以前學(xué)過(guò)的，看別人用很簡(jiǎn)單的，但是自己用起來(lái)很麻煩的
　　有什么要點(diǎn)請指教

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