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aliceyinsh
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樓主  發(fā)表于: 2009-06-15 11:12
最近在看公司機臺內部PLC程序，發(fā)現程序有些 輔助繼電器 只出現了一次，比如M1,只有一行驅動(dòng)M1的程序，其余地方就沒(méi)有了！我個(gè)人理解是不是接到 觸摸屏 上去了。

請高手賜教，先謝了～～～
psongnan
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1樓  發(fā)表于: 2009-06-15 12:39
可能是一些輔助繼電器吧   只是起一個(gè)中間的作用

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