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hubaiyuan
hubai
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樓主  發(fā)表于: 2011-05-06 19:34
S7 200的EM235模塊直接用開(kāi)關(guān)電源的直流電作為輸入信號，在PLC內的數字量為什么極不穩定
chenzexiong
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1樓  發(fā)表于: 2011-05-07 15:33
估計是模擬輸入信號收干擾，模擬信號應使用屏蔽線(xiàn)。

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