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yefeng1989
級別: 工控俠客
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樓主  發(fā)表于: 2018-04-13 09:27
我有個(gè)AI331輸入模塊，接液位計，模塊2號端子接液位計負極，24伏正極接液位計正極，中控和液位計數值準確，一致，現在液位計不顯示數，中控室一直顯示4.74，麻煩幫我分析下怎么回事

nightblueblu
道阻且長(cháng)，窮且益堅。
級別: 論壇先鋒
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1樓  發(fā)表于: 2018-04-13 16:25
據我所知   開(kāi)關(guān)電源的屁股上有個(gè)發(fā)熱非常厲害的三極管   你這直接靠著(zhù)PLC真的沒(méi)事兒?jiǎn)?/div>
Your happiness is everything.

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