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bztongyong
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樓主  發(fā)表于: 2014-09-28 20:57
各位大俠，誰(shuí)做過(guò)S7-300的CPU為313C-2PtP與島電儀表SR94的通訊嗎？用PtP口，不另加通訊模塊�；蛘哂懈呤纸o指點(diǎn)下思路或方向，不勝感激。
kiwso
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1樓  發(fā)表于: 2014-09-28 23:46
圖片：
modbus rtu可以直接上，很簡(jiǎn)單。
bztongyong
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2樓  發(fā)表于: 2014-11-19 15:40
經(jīng)過(guò)半個(gè)月的調試終于弄出來(lái)了，非常麻煩，現在能用但還不穩定。下次打死也不這樣弄了。本來(lái)通訊這塊是配角，現在倒好成主角了，還是大腕級的。

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