Identifying information in OPC XML

Products based on OPC Studio support the OPC XML-DA specification transparently, with the same approach and objects that are used for COM-based OPC Data Access. The two specifications are quite similar, and for most part, developers will not see much difference. Accesses to OPC-DA and OPC XML-DA can be freely mixed, even in the same method call. This transparency has been achieved by several generalizations in the object model and API.

OPC XML-DA specification identifies certain entities differently. The specifics of those are explained further below.

QuickOPC supports OPC XML-DA also on Linux and macOS.

The features discussed here, or some of them, may not be available in all editions of the product. Check the QuickOPC Product Editions page for differences between the editions. The trial license has all features enabled (and is limited in period for which it provides valid data), but licenses for specific commercial editions may have functionality limitations.