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rrjlove
與自己較勁，磨煉自己，成就自己。
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樓主  發(fā)表于: 2016-10-04 12:48
大家好 ！
我在網(wǎng)上看到倆種FX PLC 圓形8PIN 作為RS422與西門(mén)子人機串口通訊
網(wǎng)上有的PIN4：TXD+.
              PIN7： TXD_
或PIN4： TXD_
  PIN7： TXD+
還有PIN3：有的是GND,有的是+VCC呢？
有沒(méi)有相關(guān)資料提供一下
wshyzq
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1樓  發(fā)表于: 2016-10-04 15:38
網(wǎng)上很多吧

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