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keliter
從菜鳥(niǎo)到老鳥(niǎo)的過(guò)程
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樓主  發(fā)表于: 2010-07-28 12:33
有塊Detla模擬量輸入模塊DVP04AD,輸入 4~20mA ,有一個(gè)壓力表量程0~150Pa, AD模塊的量程是0~4000, 觸摸屏要顯示它的實(shí)際壓力, 這些東西該怎么處理?  謝謝各位,我是菜鳥(niǎo) 有點(diǎn)不懂,不必告訴程序,只需大概說(shuō)明即可
[ 此帖被keliter在2010-07-28 12:48重新編輯 ]
shuangyu
工控行業(yè)呆的越久越迷茫.......懂得多?少?......
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1樓  發(fā)表于: 2010-07-28 13:41
數據量4000=150PA
數據量0=0PA

理論是這樣的.
可能要0點(diǎn)校正
songzuolei
中達電通
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2樓  發(fā)表于: 2010-07-28 17:52
把4-20MA的模擬量轉換成0-4000的數字,再把0-4000轉換成0-150MP
就是這么簡(jiǎn)單。
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