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任先生先森
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樓主  發(fā)表于: 2021-06-07 18:06
昆侖通態(tài)觸摸屏和smart串口通信，我記得九針頭有兩種焊線(xiàn)方式，根據端口不同焊線(xiàn)方式也不同、一種是3+  8-    ，7+  8-    
另一種是什么？？？
daocaoren
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1樓  發(fā)表于: 2021-06-08 08:51
另一種是232接口 COM1 2RXD,3TXD,5GND，需要PLC擴展接口才能連接通訊，CPU本身集成的是485口
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