Data eXchange Title: Data eXchange Description:

This specification describes the behavior of OPC Server to OPC Server communications or the intended machine-to-machine communications, covering:


  • Overview, purpose, architectural considerations, and general operations
  • Detailed descriptions of the data-types and address-space
  • Detailed descriptions of each interface, method, parameters, behaviors, and return codes
  • Detailed descriptions of configuration, database, and runtime-behavior
  • XML schema and Interface Definition Language (IDL) containing all method definitions



License: OPC Specifications Agreement of Use


OPC Foundation membership fees are used by the OPC Foundation for the continuous improvement of this specification, which includes bug-fixes and adding new features as required by the continuous advancement of the OPC Specifications.


Found a bug? Please report any bugs to our Mantis system. Click the "Tracking" tab for a list of current work items. We welcome your bug-fixes and kindly ask you to submit them via Mantis.


Have a Suggestion / Request for enhancement / New Features? Please Join an OPC Foundation Member Working Group (details may be found here). You may also submit requests to the OPC Foundation email address of. All suggestions become the property of the OPC Foundation.


This specification is complete and no longer maintained.


Access: Paid Members
Version Status Description Date Posted
1.00 Release Specification Icon
Version Status Description Date Posted