本程序主要通过VC实现计算机与西门子S7－200间的串口通讯。-this program primarily through VC Computer and Siemens S7-200 serial port communications.

PRODAVE 实例 PRODAVE是西门子的通讯协议，这个文件是开源的PRODAVE实例，能够兼容西门子的PLC-PRODAVE example is the Siemens PRODAVE communication protocol, this document is open-source PRODAVE example, can compatible with Siemens PLC