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foxplc
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樓主  發(fā)表于: 2008-10-09 15:43
在S7-200中有AIW0的模擬量輸入,在LAD中怎樣處理可把實(shí)際工程值讀到,MCGS所在的監控界面中
cvlsam
富士低壓,POD(觸摸屏),PLC專(zhuān)賣(mài)
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1樓  發(fā)表于: 2008-10-09 16:46
使用MCGS,這樣的程序不需要寫(xiě)!

假設您4-20MA信號對應工程量為0-100,那么PLC中使用MOV指令將AIW移入VW區域。

在MCGS中建立對應的變量以及數據通道,對通道進(jìn)行處理,使用工程量轉換處理方式就可以。

在輸入最小值與最大值分別填入6400,32000,在工程量最小值與最大值中分別填入0,100,那么當MCGS運行時(shí),會(huì )自動(dòng)將6400~32000的值轉換為0~100在屏幕上顯示。




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