Abstract
Developments of smart field devices have advanced the scope of Industrial Automa-tion further. These varied techniques have made it possible to transfer the informa-tion about these devices efficiently throughout the plant, thereby enhancing the process of business management.

OPC (OLE for Process Control) provides a standard mechanism for communicating to these smart field devices, where OLE is Object Linking and Embedding. OPC depends more or less on Microsoft Component based technology. Today, there are many OPC COM (Component Object Model) servers available in the market for utilizing these Industrial field devices efficiently. This paper proposes a Generic OPC Client for the OPC Data Access Server to take advantage of this technology to the fullest extent. The requirements and architecture for this Generic OPC Client is also described. This generic client can be developed in C++ to utilize the efficiency of the OPC custom interfaces.

Authors Venkateswara Rao M Shailendra Jain

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