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ekinnakata
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樓主  發(fā)表于: 2010-04-29 15:59
現在我這邊使用的PLC是CPU224XP,214-2BD23-0XB8,流量計用的是帶模擬量輸出的4-20mA,
工程項目要求:管路上面安裝流量計和泵,流量計數據采集到PLC,轉到電腦操作界面,當管路中流過(guò)介質(zhì)達到一定數值以后,泵自動(dòng)停止工作
目前存在問(wèn)題:1、這款PLC是否帶模擬量電流信號輸入?
              2、PLC上面有M、I、V、M、A+、B+六個(gè)點(diǎn),都是什么意思,要是能連接的話(huà)我該連接哪兩個(gè)端點(diǎn)?
              3、假設我要求管路中流量達到10噸以后,泵自行停止工作,梯形圖該怎么編?(控制泵接觸器的繼電器連接的Q0.0端)
若表達中有什么不明白或者不清楚的告知我一聲,我及時(shí)補充!
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llh258021686
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1樓  發(fā)表于: 2010-05-06 03:00
精確到10位怎么看出來(lái)的?

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