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清風(fēng)來(lái)了
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樓主  發(fā)表于: 2023-11-22 23:08
圖片：
各位總工們好：
                   有個(gè)疑問(wèn)就是：在HMI上點(diǎn)擊“按鈕”，或“通過(guò)HMI設置相關(guān)參數”或 “查看PLC參數”，那么HMI是如何知道這個(gè)是寫(xiě)入PLC的數據，而不是讀PLC的數據呢？
                   在HMI變量的屬性里，沒(méi)看到有專(zhuān)門(mén)設置寫(xiě)入PLC或讀PLC數據的設置的。


煩請總工們解惑。
mr_liu
學(xué)海無(wú)涯，劃水度日
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1樓  發(fā)表于: 2023-12-07 15:59
要么讀要么寫(xiě)，或者讀寫(xiě)都可以，這個(gè)為啥要區分，設置好對應地址，就OK了

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