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zhaosheng998
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樓主  發(fā)表于: 2014-03-30 15:24
我想問(wèn)一下，兩線(xiàn)光電開(kāi)關(guān)作為輸入怎樣接到PLC的輸入點(diǎn)，是直接接com端和輸入端的點(diǎn)嗎？
富陽(yáng)工控
燈泡電工
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1樓  發(fā)表于: 2014-03-30 21:52
對，負端接COM，正端接輸入，不過(guò)兩線(xiàn)一般用的很少

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