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pl00003
代寫(xiě)施耐德程序，提供施耐德整體方案
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樓主  發(fā)表于: 2010-06-08 11:13

這個(gè)控制圖，里面的Y0.Y1都是干嘛的啊，打到手動(dòng)檔，PLC不是不運行了嗎
tantaiyu
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1樓  發(fā)表于: 2010-06-08 16:06
是否這樣理解?
1、手動(dòng)控制作用：防止PLC出現故障時(shí)系統不能運行，所以手動(dòng)可以不用PLC、獨立操作。
2、自動(dòng)控制：圖紙里面的Y觸點(diǎn)，就是PLC的輸出信號。

    這是一個(gè)考慮挺到位的系統，人多人喜歡手動(dòng)自動(dòng)都由PLC來(lái)完成，這樣不是很好，手動(dòng)不應該通過(guò)PLC來(lái)完成。

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