C#modbus rtu绝对好用，绝对能用

瑞萨单品机9222，串口通信历程及寄存器介绍(nec 9222 MCU，uart communication and register s introduce)

清除串口冗余。当下位机偶然有乱码出现时，在新的通讯开始先清除缓冲区冗余信号，然后开始通讯，可以保证通讯更稳健(Clear serial redundancy. Current-bit machines have occasionally garbled when, in the new communications start to clear the buffer zone redundant signal, and then began to communications, to ensure more robust communication)

串口程序实现Ymodem协议，也可以使用TCPIP实现Ymodem协议。 串口和网络程序都可以当一个助手使用。(Serial procedures to achieve Ymodem protocol, you can also use TCPIP achieve Ymodem protocol. Serial and network programs can use when an assistant.)

通过串口来通信，控制PLC，单片机各种伺服变频等实现运动。(Through serial port to communicate, control PLC, microcontroller servo frequency conversion and so on to achieve movement.)

说明：  vb串口通信控件,tcomm,附c++ builder测试代码(vb serial communication control, tcomm, attached c++ builder test code)

串口初始化程序模块，可是方便更改参数，使用简单。(Serial port initialization module, but easy to change parameters, easy to use.)

专门为瑞萨智能车设计的串口工具，可同时发送六组数据，很好的上位机程序(Designed for renesas intelligent car design of serial tools, can also send six sets of data, good PC program )

最简单的串口通信程序，MFC，基于SerialPort类,VS2008(The simplest SerialPort program,based on CSerialPort ,VS2008)

常用RS232串口通用库类，可直接使用,谢谢大家~(The common library of the RS232)

用visual c++写的串口通信程序,有rs232,同步串口通信,不错的(Written in visual c++ serial communication program, rs232, synchronous serial port communication, good)