Kepware's ClientAce OPC .NET Toolkit provides simple-to-use tools for developers wanting to build an OPC client application. ClientAce consists of two main parts: the DA Junction and the .NET API.
The ClientAce DA Junction is a customized .NET control that enables a Visual Basic .NET or C# programmer to easily develop OPC client applications that can access a variety of OPC servers. No detailed knowledge of OPC Data Access interfaces is required. The DA Junction will perform the connection handling procedure between your custom client application and the OPC server, as well as monitoring and reconnection when necessary.
The ClientAce .NET Application Programming Interface (API) provides users of languages such as C# and Visual Basic .NET with a simple, intuitive and optimized class library to quickly develop OPC client applications for accessing OPC servers.