一个链接读写OPC的案例，能用于初学者了解如何操作OPC数据。-The case of OPC, a link, speaking, reading and writing can be used for beginners to understand how to operate the OPC data.

vc编写的工业自动化中opc客户端，实现数据读写等功能-vc prepared industrial automation opc client, the data read and write functions

vc编写的工业自动化中opc客户端，实现数据读写等功能,测试方便-vc prepared opc client industrial automation, data reading and writing and other functions, convenient test