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wenliang
擡頭白雲悠悠,前竟一片黯愁……
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樓主  發(fā)表于: 2017-03-28 17:23





           西門(mén)子200PLC Modbus通訊問(wèn)題?  
  各位大俠 請教一個(gè)問(wèn)題,我現在用西門(mén)子200PLC Modbus通訊 Power Flex4m變頻器,我能夠寫(xiě)頻率進(jìn)去 ,但是無(wú)法用指令啟動(dòng)變頻器運行,麻煩各位大俠指點(diǎn)一下,在這里 先謝了!
chenbo0725
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1樓  發(fā)表于: 2017-03-29 16:17
你都把圖表發(fā)出來(lái)了還沒(méi)看懂嗎?12和22還有1這里代表是16進(jìn)制,把它轉換成2進(jìn)制,然后根據你那個(gè)表低位開(kāi)始對號入座就出來(lái)了 ,比如22轉換成2進(jìn)制就是0000 0000 0010 0010 第一位0不停止 第二位1啟動(dòng) 第三位0不點(diǎn)動(dòng) 第四位0不清除故障 第五六位(兩位)10反轉命令,不知道你看懂沒(méi)有?基本上好多變頻器通訊命令格式都是這樣分配(只是位代表的命令碼有差異)
樓主留言:
真的非常感謝!因為我一直當16進(jìn)制數在看,所以怎么轉就是對不上,沒(méi)有想到把它轉成二進(jìn) 制的,真的太感謝了!

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