【摘要】 鉴于OPC(OLE for process control)规范正逐渐成为现场智能仪表与工控软件、工控软件与企业信息管理系统之间的工业通信标准,介绍了OPC规范的构成、发展和应用情况;重点阐述了构成OPC数据访问服务器的组件对象及其接口,并以Delphi为开发工具详细说明了OPC数据访问服务器的实现过程及其关键技术.更多还原

【Abstract】 Considering OPC is gradually accepted as an industrial communication standard for the interoperability between intelligent instruments,automation software and business information management system,this paper introduces the structure,development and application of OPC,describes the component objects and interfaces of data access server in detail,and presents the design process and key technique of data access server by using Delphi 7.0.更多还原