Short description of OPCDA.NET 6.1: OPC client development compone for .NET. OPC DA client applications. The OPCDA.NET component provides .Net classes and methods that take advantage of the .NET features and make OPC DA Server access real simple and highly efficient. The OPC DA functions are provided as methods with easy to use .NET friendly interface. Visual Studio .Net wizards create new OPC DA client applications or add OPC DA access functionality to existing applications.