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山大王
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樓主  發(fā)表于: 2021-07-16 11:12
和匯川MD500PLUS變頻器通信，當只有電腦插著(zhù)PLC，并監控著(zhù)程序時(shí)，通信才正常，這是什么梗？
請叫我老鐵
人生就像蒲公英，看似自由，卻身不由己。
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1樓  發(fā)表于: 2021-07-16 11:45
可以考慮是否電壓或者干擾問(wèn)題
山大王
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2樓  發(fā)表于: 2021-07-16 13:02
圖片：
輪詢(xún)也不行，怪事

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