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sxbug
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樓主  發(fā)表于: 2011-11-19 17:18
fx3u+485BD+485ADP連接 觸摸屏和變頻器。485ADP連接觸摸屏ok
現在我想通過(guò)485BD連接變頻器，想通過(guò)設置 plc參數的方式 直接通訊，
就是不想用設置d8120和RS指令

我的問(wèn)題是：在PLC端這樣設置可以不？
   485專(zhuān)用協(xié)議，9600  7 e 1, 和校驗，有lfcr，站號1

在變頻器端響應的做了設置，站號2

想在plc中直接通過(guò)extr k12 k2 k2 d90的方式直接讀取參數

這樣可以不？

謝謝
358273433
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1樓  發(fā)表于: 2011-11-20 00:02
extr是2N的通信指令，3U用IVRD。電阻設110歐。具體怎么編程看說(shuō)明書(shū)。

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