If your interest is using OPC, use the OPC Supervisor link in the leftmost frame, near the top to get started.
If you are a distributed application developer, a suggested starting
point is getting familiar with the Datahub used as a message system
server, and as a shared data and subscription server. Navigate to
the Datahub Reference document
by choosing Applications in
the leftmost frame and Datahub
in the middle frame. The Datahub is a Tcl/Tk application
shell extended with new commands for data management and for
inter-process communication. The underlying Tcl commands, SQL, and mbx, are available for use in any Tcl/Tk application. The DMH
message system software bridges a wide variety of hardware platforms
and programming languages such as Java and .NET. Use
the links in the leftmost frame under DMH
Clients for the reference pages.
Tcl/Tk? What's that? Tcl is an open-source programming language that was designed for software integration projects. It is powerful and productive. To learn more about Tcl and the windowing toolkit Tk, choose the Internet link in the leftmost frame under Tcl/Tk Reference and spend some quality time browsing the links that appear in the middle frame. The SDK documentation contains complete reference information for Tcl/Tk programming.