Open Platform Communication Unified Architecture (OPC UA)


OPC-UA is “[a] platform independent service-oriented architecture that integrates all the functionality of the individual OPC Classic specifications into one extensible framework” (Source:

While not mining-specific, the OPC-UA mining companion specification is underway (see also IREDES).

Description from the VDMA:

“OPC UA is an open interface standard that defines the mechanisms of cooperation in the industrial environment. It enables the industry to integrate its products and its production by information and communications technologies (ICT). Machines and plants can be redesigned as required by plug & work – irrespective of which manufacturers the machines and components originate. The VDMA develops with its member companies OPC UA Companion Specifications”  (source:

 How it enables interoperability:

“OPC UA provides the necessary infrastructure for interoperability across the enterprise, from machine-to-machine, machine-to-enterprise and everything in-between” (source: It is platform-independent solution.


  • OPC UA is published as an International Standard in multiple parts, IEC 62541 OPC unified architecture
  • A searchable repository of information models is available here:
  • Ongoing work to update and expand.


See also: IREDES, VDMA OPC UA Mining Initiative