Abstract:Data collection in modern industrial production processes requires high sampling rates and high real-time transmission, while existing OPC clients of data acquisition cannot meet the requirements. In order to solve this problem, by analyzing the OPC standard, accessing the server data interface and component object model, combined with the characteristics of data acquisition in current industrial control, the OPC client based on subscription data collection is designed and implemented. This solution has high application value in solving the problems encountered in current industrial data collection. And in the actual production environment, it verifies the stability and real-time performance of the data transmission with the standard OPC server, which provides a reliable data foundation for production process control.