利用VB编写一个简单的程序与PLC通信实现发送接收资料功能-Project

关于PLC和PC通信串口通信问题关于vc-PLC and PC communication serial communication problem vc++

用VB实现的Client,实现S7—PLC和计算机通信,遵照OPC协议实现-Using VB to achieve the Client, the realization of S7- PLC and computer communication, according to the OPC protocol implementation