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zzzer442
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樓主  發(fā)表于: 2017-12-18 09:36
我近來(lái)用顯控的SA700的PLC觸摸屏一體機控制一個(gè)步進(jìn)電機定時(shí)正反轉。

1.我原來(lái)用步進(jìn)階梯指令去控制，M100，M0等位狀態(tài)變化可以在觸摸屏上顯示。

2.我後來(lái)不用步進(jìn)階梯指令，只用M0到M200之間的中間繼電器去控制，發(fā)現這時(shí)候，M100，M120等位狀態(tài)在觸摸屏上沒(méi)有變化，運行時(shí)我監控PLC程序時(shí)，程序上M100和M120是閉合的，但就是沒(méi)有體現在觸摸屏上位圖的變化？
到底是什麼原因呢？請不吝賜教！
謝謝！

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