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mr_liu
學(xué)海無(wú)涯，劃水度日
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樓主  發(fā)表于: 2021-11-20 14:58
現場(chǎng)遇到一個(gè)問(wèn)題，ET200sp AI 8xI 2-/4-wire BA，接線(xiàn)的問(wèn)題�，F場(chǎng)是一個(gè)有源的模擬量4-20MA的信號，接入模擬量模塊。以為前面有無(wú)緣的模擬量傳感器接進(jìn)去，一下就好了。所以現在也是直接往上接，一直也沒(méi)有得到想要的結果。然后就考慮是不是不能接有源的傳感器，各種試。最后發(fā)現需要共電位，然后把模塊的0v，傳感器的﹣都端起來(lái)，然后莫名的就好了。有沒(méi)大神也遇到過(guò)。能大概講解下嗎

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