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thanqq
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樓主  發(fā)表于: 2020-07-13 19:43


現在需要10個(gè)輸入 15輸出  2個(gè)485口或者1個(gè)485 1個(gè)PN口

看了下淘寶上價(jià)格

SR20  ￥640   12輸入8輸出
SR40  ￥1285  24輸入16輸出


那我還不如用SR20*2走PN 還多個(gè)了485口做通訊 是這個(gè)意思嗎

這樣子有什么弊端呢
ytzidonghua
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1樓  發(fā)表于: 2020-07-14 11:38
還是40點(diǎn)加個(gè)通訊板好些
一個(gè)比兩個(gè)通訊還是方便些
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