In close cooperation, and within the framework of a joint working group, experts from Profibus & Profinet International (PI) and the OPC Foundation have specified a solution for present-ing Profinet data in the OPC UA object model. Profinet’s OPC UA companion specification is set to be reviewed soon.
According to extensive coordination talks with users, the most significant content of Profinet’s OPC UA companion specification includes the collection and display of asset management and diagnostic data. This information can be displayed flexibly in specific ways on various devices, based on the requirements and possibilities.
Asset and diagnostic data from the devices employed today can be collected in a system controller through existing mandatory Profinet services and delivered to higher-level entities by means of OPC UA. This service can also be offered by an edge gateway, which can additionally be added to the system. The advantage here is that no changes have to be carried out on the controller. These use cases are predestined for innovating characteristic brownfield systems. It is also possible to directly integrate the OPC mapping in a Profinet field device.
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