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hulianxin
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樓主  發(fā)表于: 2008-11-13 16:34
請教高手指點(diǎn)，我寫(xiě)歐姆龍的PLC程序時(shí)，有時(shí)通訊不上，接線(xiàn)什么都是好的，換一個(gè)程序又可以，后來(lái)懷凝程序有錯誤，但把這個(gè)程序重新復制到新建的一個(gè)窗口又可以了．請問(wèn)這種情況是哪有問(wèn)題．
yjp-gyl
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1樓  發(fā)表于: 2008-11-14 09:00
這種情況應該可以排除是軟件的問(wèn)題,多查找硬件方面的問(wèn)題,比如USB轉RS232的轉接頭是否有問(wèn)題 ,更換一根試試看,還有把通訊的波特率調整到9600,不要太高.
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