Research on Key Technology of the Address Space for OPC UA Server

摘要

Due to a COM/DCOM compouent based technology; tradihonal OPC servers have technical defects on Web Data Exchange and Security Mechanisms, and highly rely on the Windows platform This paper uses a new OPC Unified Architecture Specification to address the above issues, and integrates services of traditional OPC into one OPC server, which simplifies the function collaboration and enterprise deployment. By using code managed technology of Microsoft.Net and modular programming, the framework of OPC UA Server is constructed and the address space, security configuration and other basic modules are designed. Some classes such as the Node Manager, Data Manager, Browse Manager, Subscription Manager and View Manager of the address space are also developed for the server, with the Node and Reference technology of server's address space. An indeptndent function module for OPC UA address space is also proposed in this paper.