The Research And Development Of OPC Historical Data Access Server

With the level of automation that is being applied in manufacturing, people are dealing with higher and higher amounts of information including historical data. OPC historical data access Server provides a kind of standard mechanism of data access for the users who are interested in historical data. The mission that this article wants to solve is how to develop the OPC historical data access Server. First the article introduces the producing background, main characteristics and development condition of OPC technique, then analyzes its core COM/DCOM technique. Second the article analyzes the model of OPC historical data access Server and the structure of its objects and interfaces. The definition and function of its objects and interfaces are analyzed in detail. Finally, this paper provides the techniques and realization that are used to develop OPC historical data access Server by describing the example of customer and server designing.