OPC-XML服务器转换技术的研究及其实现

Research on Transformation Technology of OPC XML Server and Its Implementation

在深入分析COM和WEB服务的构件组成的基础上,利用VS.NET对现有OPC服务器进行转换,通过COM Interop连接低层的OPC服务器,访问现场数据;然后按照OPC XML规范具体实现OPC XML应具有的功能;最后按照SOAP和WSDL协议,实现OPC XML服务器的WEB服务。完成对现有的基于OPCCOM接口规范的工业数据的XML化工作,很方便地实现了现存的基于COM技术的OPC服务器的升级,使得这两种接口可以和谐地共存。

In the thorough analysis COM and WEB core constitution, making use of VS. NET to the Current OPC server converting, low layer OPC server is linked by COM Interop, the field data is interviewed. Then, according to OPC XML specification, OPC XML functions is realized that they should have;Finally,by the WSDL and SOAP, OPC XML server is realized with WEB service. Implement to XML enable the existing OPC COM industry data and elevate OPC COM servers. The two different interfaees ean paralleled elosely.