OPC Adapter Technical Documentation

About this document

This document explains the design and technical details of the OPC Adapter. It is probably interesting primarily for people who will change or recompile the OPC Adapter code, or update the OPC Gateway (in which the OPC Adapter is one part) with a new version of the RDA or the SFW.

Regarding normal use of the OPC Gateway, logging and troubleshooting, please see the OPC Gateway Documentation.

For clarity, this document uses the following definitions:

RDA: Remote Device Access, implementing a CORBA interface.
SFW: Server framework, implementing adapter-independant functionality.
OPC Adapter: Implements a general adapter interface to provide access to OPC servers.
OPC Gateway: The entire executable, including RDA, SFW and OPC Adapter, and also the WindowsNT specific code that makes it run as a NT service.

Contained in this document are instructions how the OPC Adapter has been designed and implemented. See next page for this: OPC Adapter.

Image: The relationship between the RDA, the SFW, the OPC Adapter and the OPC Gateway.

This is the OPC Adapter Technical Documentation, describing how to extend or improve the OPC Adapter.
Also relevant are: the OPC Adapter Reference Manual - HTML (for quick on-line lookups), the OPC Adapter Reference Manual - RTF (suitable for printing) and the OPC Gateway Documentation (how to use/compile).