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steve_suich
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樓主  發(fā)表于: 2008-05-31 19:08
圖片：
常閉按鈕在梯形圖里要用常開(kāi)接點(diǎn)？
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1樓  發(fā)表于: 2008-05-31 21:53
呵呵，我不是學(xué)電的。那有沒(méi)有在外部是用常閉，而梯形圖也用常閉的呢？感覺(jué)不理解！
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2樓  發(fā)表于: 2008-05-31 21:54
如果有西門(mén)子編程經(jīng)驗的話(huà)，會(huì )發(fā)現這個(gè)是極其正確的。
？？？？？
三菱的有這個(gè)現象嗎？

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