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liupei1899
三人行必有我師
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樓主  發(fā)表于: 2013-08-04 13:03
屏上有啟動(dòng) 停止 速度+  速度—四個(gè)按鈕 并顯示電機速度 而PLC只有三個(gè)輸出點(diǎn)Y0 Y1 Y2（繼電器輸出）和變頻器連接 變頻器和觸摸屏 PLC間沒(méi)有通信連接  是如何控制的？顯示的速度如何獲得？謝謝
yerong
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1樓  發(fā)表于: 2013-08-06 22:34
看看 輸出點(diǎn)動(dòng)作方式就清楚了
[ 此帖被yerong在2013-08-06 22:39重新編輯 ]

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