By analyzing the difference between OPC XML-DA specification and OPC DA specification,an architecture of remote monitoring system is designed. Updating the OPC server to OPC XML server via middleware server.

• 分析比较了OPC XML-DA规范和OPC DA规范,设计了远程监控系统的架构,通过中间件服务器的设计实现了将现有OPC服务器升级为OPC XML-DA服务器。