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RS422 是差分信号, 每个信号两个脚, 电压范围 0~5V
RS232 是单端信号, 每个信号一个脚, 电压范围 +/-15V
怎么兼容? 即使兼容了, 那岂不是打坏人家的接口电路嘛
顶起来，标记下。MOXA的USB2UART能做到楼主所说的功能，同求实现方案，尤其是需要PIN2PIN的兼容，非PIN2PIN兼容的方案还是挺多的。等待大神出现
