XWP

这个程序是利用VC编写的一个从机串口响应modbus查询命令程序，实现RTU方式，3.5和1.5个字符时间检测，CRC和LRC校验。(This program is written using VC as a response from the machine serial modbus query command procedure, to achieve RTU mode, 3.5 and 1.5 characters time detection, CRC and LRC check.)

调试串口的程序，本程序运行于PC机，是开发串口电路的好帮手。(Debug serial procedures, the program runs on PC, is to develop a good helper serial circuit.)

基于SerialPort的串口调试助手代码，运行平台VS2010，MFC工程文件(Based on the serial debugging assistant SerialPort code, run the platform VS2010, MFC project file)

说明：  串口通信高级编程提供了一个能够进行串口通信的类，能够方便地进行各种数据通信。 由于本程序设计到硬件编程，因此，如果读者的串口通信设备 没有连接好，可能会有问题 (Serial communication provides a high-level programming to carry out the type of serial communication, the ability to easily carry out a variety of data communications. Since the hardware design to programming, so if the reader' s serial communications equipment is not connected well, there may be some problems)

串口驱动程序，可替换NT下的串口驱动程序 (Serial dirver which can replace serial driver in NT)

串口调试程序源代码，本例作为学习串口编程具有很好的参照作用。(Serial debugger source code, in this case as a learning serial programming with a good reference to the role.)

VC实现和S7-200PLC的串口通信程序,很有价值哦(VC and S7-200PLC Serial Communication Program and of great value oh)

一个简明的串口通讯例子(a simple and clear example for serial port communication)

VC串口调试助手源代码，很不错的例子，非常适合初学者使用！！(VC serial debugging aides source code, it is a good example, very suitable for beginners! !)

串口调试工具，包含自动计算MODBUS crc校验码，是工具非源码(tiaoshi gongju)