本文详细地介绍了如何从RS-232信号线上高效率地产生电源如何实现RS-232 接口与RS-485/RS-422接口的智能转换同时也给出了具体的硬件设计及软件设计方法-This article describes in detail how the signal from the RS-232 line of high efficiency power generation how to achieve the RS-232 interface with RS-485/RS-422 Inte

VB与欧姆龙PLC通过RS-232实现串口通讯，监控。(VB and OMRON PLC through RS-232 serial communication, monitoring.)

用于S7-1200PLC与条码扫描器的连接,使用232串口(Used for connection between S7-1200 PLC and barcode scanner, using 232 serial port)