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nhsl
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樓主  發(fā)表于: 2012-05-21 14:10
一臺機器運轉正常時(shí)，主軸帶動(dòng)端部的半個(gè)圓盤(pán)轉動(dòng)，接近開(kāi)關(guān)接收這個(gè)斷續的信號，當機器發(fā)生故障時(shí)，主軸不轉動(dòng)因此接近開(kāi)關(guān)無(wú)法接收到這個(gè)斷續的信號，使得整個(gè)PLC無(wú)法繼續執行下一步工作，特請教這個(gè)功能使用什么指令寫(xiě)的那？謝謝�。�！
qyq
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1樓  發(fā)表于: 2012-08-04 16:54
PRV是讀取各個(gè)脈沖輸出端口發(fā)出的脈沖量的。。�？梢愿鶕⺁LC來(lái)設定里面的端口。

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