实时读取OPC Server数据，并定时存储到SQL数据库-Real-time OPC data read and stored into SQL database

Opc use the software, use VB programming-Opc use the software, the use of VB programming

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