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dream321
青學(xué)不精
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精華主題: 0
發(fā)帖數量: 365 個(gè)
工控威望: 563 點(diǎn)
下載積分: 6177 分
在線(xiàn)時(shí)間: 366(小時(shí))
注冊時(shí)間: 2012-03-07
最后登錄: 2025-06-04
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樓主  發(fā)表于: 2016-02-15 19:45
哪位大大給我解釋一下為什么前后VD150,數值不一致,VD150不是包含VW150,VW151嗎,怎么不對?,謝謝大大!
dream321
青學(xué)不精
級別: 家園?
精華主題: 0
發(fā)帖數量: 365 個(gè)
工控威望: 563 點(diǎn)
下載積分: 6177 分
在線(xiàn)時(shí)間: 366(小時(shí))
注冊時(shí)間: 2012-03-07
最后登錄: 2025-06-04
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1樓  發(fā)表于: 2016-02-19 20:24
多謝各位大大的發(fā)言,看來(lái)還要多學(xué)學(xué)基本功,努力。從上面各位大大說(shuō)的就是數據格式不對,對嗎,S7 200是照其自身定義,格式不同的數據表示不同含義的信息。
在S7-200中,各種指令對數據格式都有一定要求,指令與數據之間的格式要一致才能正常工作。例如,為一個(gè)整數數據使用實(shí)數(浮點(diǎn)數)運算指令,顯然會(huì )得到不正確的結果?墒窃诘诙䝼(gè)VD150是什么格式啊   v大150   1162511036這個(gè)

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