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projet OPC UA

Le projet Club Companion Spec OPC UA

Le Club OPC UA « Companion Specs (CS) » a pour objectif de constituer un forum d’échanges entre industriels utilisateurs finaux, équipementiers, éditeurs et intégrateurs de logiciels du standard OPCUA. Ce club est l’occasion de construire des projets qui seront développés dans le cadre du programme ATLAS notamment concernant le développement des CS nécessaire .

Data, digital continuity and interoperability

Standardized data, digital continuity and system interoperability are key levers for industry competitiveness. They are definitely part of a circular economy logic.

In the factory, the proliferation of industrial robots, machine tools, and PLCs calls for an omni-platform industrial automation communication protocol and data exchange format that is independent of any brand or operating system.

Indeed, this type of protocol simplifies for end users the integration of equipment, the exploitation of data, in this case standardized and the maintenance of equipment. 

Adoption by equipment suppliers, software publishers and integrators of this type of protocol also makes it easier for the market to adopt their solution. It is therefore a marketing asset

OPC UA and Companion Specifications

OPC UA (Open Platform Communications Unified Architecture) is an open standard, designed on a service-oriented architecture (SOA), developed to secure data flows during intra and/or inter industrial automation equipment exchanges. It is becoming predominant as a support to the development of M-to-M communication protocols.

New information models can be created on the basis of the OPC UA data model; the specifications of these information models that address a specific industrial issue are called Companion Specifications.

Thanks to these, all the equipment in a process can be understood, from sensors and controllers to intra-company or cloud-hosted applications.

Today, more than sixty CS have been developed in open-source; our goal within the club is to put the users at the heart of the creation process.


The objectives of this Club are as follows: 

  • Classify the types of companion specifications (CS).
  • Identify CS of common interest by sharing experiences and Use-Cases.
  • Build a project plan
  • Share resources
  • Lancer le Développement des CS au sein du programme ATLAS


Les conditions d’accès impliquent la volonté de participer via un collectif au développement de Companion Specifications et à leur mise en œuvre via la signature d’une charte communiquée à l’entrée dans le club.

Contacts ATLAS :

Marc Sommy (AFNeT Services), Stephane Barth-Chainian (AIF)

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