Modbus RTU/TCPIP 模擬器-Modbus RTU/TCPIP simulator

利用vc语言并且在其中用modbus rtu协议实现串口通信的功能，对于初学者非常有用。后面都有注解。-The use of vc and with modbus rtu protocol serial communication functions

本程序基于MODBUS RTU协议，通过发送协议指令码实现与各种PLC通讯功能。经测试程序功能正常。-The program is based on MODBUS RTU protocol by sending the scr ipt to achieve agreement with a variety of PLC communication. After testing program functions properly.

VC++通过MODBUS RTU方式进行串口读写操作-VC++ for serial read and write operations through MODBUS RTU mode