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山東庚之午
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樓主  發(fā)表于: 2022-09-26 08:33
圖片：
圖片：
這是一個(gè)啟動(dòng)按鈕啟動(dòng)電機的程序，不知道當時(shí)編程人員如此編程的目的是什么？
cvlsam
富士低壓，POD（觸摸屏），PLC專(zhuān)賣(mài)
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1樓  發(fā)表于: 2022-09-26 16:25
畫(huà)個(gè)時(shí)序圖就理解了。

利用Q需要更新IO映像區才發(fā)生狀態(tài)改變的原理。
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