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hwl666
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樓主  發(fā)表于: 2010-12-15 08:36
學(xué)了一段時(shí)間PLC，遇到了下面的問(wèn)題，突然疑惑了，感覺(jué)什么都不懂了，糾結�。�
如下圖接線(xiàn)，程序里X1的常閉觸點(diǎn)
能夠使用嗎？
木獬
花看堪折直須折，莫待無(wú)花空折枝。
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1樓  發(fā)表于: 2010-12-15 08:40
當然可以，外面接通時(shí)，里面如果是常開(kāi)（就閉合），如果是常閉（就斷開(kāi)）。

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