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樓主  發(fā)表于: 2009-06-21 19:58
我的電腦是筆記本，在向PLC 寫(xiě)入程序時(shí)電腦提示COM口使用錯誤，今請教后告知在設備管理器中通訊端口這一項中設置COM口，但是我的電腦設備管理器中沒(méi)有通訊端口這一項，那該怎么設置��？
jiaowenxue
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1樓  發(fā)表于: 2009-06-21 20:18
usb轉rs232端口驅動(dòng)程序裝了沒(méi)有

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