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樓主  發(fā)表于: 2018-12-21 11:08
各位老師，我想用USB轉485的線(xiàn)和三菱FX3SA422串口通訊，485端口這里的TX+ TX-怎么和PLC端8針圓口的接線(xiàn)哪？
我查到了PLC端的引腳是：1是RxD- ,2是RxD+,4是TxD+,7是TxD-,5是GND .
還需要做哪些設置哪？

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