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angelagent
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樓主  發(fā)表于: 2008-07-19 10:07
我用三菱FX、臺達PLC、永宏P(guān)LC做過(guò)很多RS-485通訊了。
可是用三菱ＱＰＬＣ模塊ＱＪ７１ＵＣ２４與變頻器４８５通訊卻出了問(wèn)題。
請教三菱ＱＰＬＣ模塊ＱＪ７１ＵＣ２４與變頻器４８５通訊如何做？
我現在采用無(wú)順序協(xié)議通訊，但會(huì )有７Ｆ６８Ｈ�。罚疲叮梗葍蓚�(gè)錯誤．試過(guò)很多種通訊格式都無(wú)效。模塊ＱＪ７１ＵＣ２４用的是COM2口。
變頻器為臺達的VFD-B系列/
指令是用G.INPUT    G.OUTPUT
請教高手寫(xiě)個(gè)范例。

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