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lzhpsky
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樓主  發(fā)表于: 2010-06-19 09:25

  
我用串口調試軟件,給變頻器發(fā)指令代碼,正轉反轉停止頻率修改都沒(méi)問(wèn)題,但是我發(fā)送頻率讀取指令時(shí),沒(méi)有數據返回呢?是我的指令錯誤嗎,我發(fā)送的是05  30  31  36  46 31  30  45,我發(fā)送05 30 31 46 41 31 30 32  37 42 電機可以正轉,發(fā)送05 30 31 45 44 31 30 37 44 30 46 36電機可以20HZ運行,證明發(fā)送還是沒(méi)問(wèn)題的啊,但是怎么就無(wú)法讀取當前的頻率呢?請大家指教。

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