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lzp7963350
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樓主  發(fā)表于: 2016-05-23 14:22
復歸型   plc是HMI。。。這是指示燈還是開(kāi)關(guān)啊，，，為什么要這樣做呢、
iujfang
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1樓  發(fā)表于: 2016-05-23 14:58
開(kāi)關(guān)，相當于下降沿脈沖
lzp7963350
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2樓  發(fā)表于: 2016-05-23 17:38
沒(méi)明白為什么要這樣做

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