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flyhawk
我是一只小小鳥(niǎo)，想要飛卻飛不高
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樓主  發(fā)表于: 2008-08-08 12:00
各位高手，小弟遇到一西門(mén)子S7300的模擬量輸入問(wèn)題，忘能指教！不勝感激！具體如下：模擬量輸入模塊6ES7 331-7KF02-0AB0，輸入方式我硬件組態(tài)和模塊撥碼均設置的4線(xiàn)制電流輸入模式，傳感器信號為4-20ma，量程為40MPa的壓力傳感器�？墒乾F在出現了讀取值（經(jīng)計算后）為47.71，把輸入信號從模塊上拆掉后依然為此數值，更換新模塊后依然如此。程序應該沒(méi)問(wèn)題，在信號沒(méi)有的情況下為何出現此情況？希望能得到高手的幫助
cvlsam
富士低壓，POD（觸摸屏），PLC專(zhuān)賣(mài)
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1樓  發(fā)表于: 2008-08-08 12:49
那是斷線(xiàn)信號，請您仔細核查您的接線(xiàn)方式……當模塊上無(wú)接線(xiàn)也會(huì )出現此情況。

建議您仔細看看西門(mén)子的模板規范手冊。

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