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yinyue123
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樓主  發(fā)表于: 2009-04-22 16:30
在觸摸屏上的一個(gè)切換開(kāi)關(guān)M14.3，
在PLC程序里是LD       T50
                             AN       M14.3
                             S          Q2.0，1           什么原因會(huì )引起 LD       T50 接通， 但  S          Q2.0，1   卻不能置1
S7-200的PLC

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