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gmplee
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樓主  發(fā)表于: 2014-10-13 12:44
我們單位的包裝機PLC更新，換了同樣的PLC。當我在檢查程序時(shí)發(fā)現沒(méi)有X1的接入點(diǎn)。但PLC卻有線(xiàn)連接？是一根光標信號線(xiàn)？我想問(wèn)一下各位大俠，程序中可以用別的指令識別X1嗎？
zhuqiang1
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1樓  發(fā)表于: 2014-10-13 13:00
這個(gè)你看看書(shū)。你的程序里有個(gè)高速計數器對應的是X1的輸入，我記得是C256你看一下。有了C256就在程序中是找不到X1的

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