| Traditional OPC server does not has Platform-independent characteristics, transmits message complicatedly, does not favour teamwork. OPC Unified Architecture Specification(OPC UA for short) integrates services of traditional OPC into one OPC server, simplifies the function collaboration and enterprise deployment, solves the problems which traditional OPC server has. Modularite and constructe the development framework of the OPC UA server, includes the address space, security configuration and other basic modules. Base on.NET platform and Visual Studio 2008 development tool, and by using the WCF long-dispense communication technology of.NET 3.5 framework, design and realize three functions such as session, security verify and configuration. At last, realize the security and configuration module of the OPC UA server. |