I'm going to add an upvote to this one since it would be nice to have if I get more projects with it. The model that we got stuck interfacing with only supports OPC DA2 and it did require some modifications from B&R to expose those tags to their OPC server. We ran into a bunch of fun getting that initially configured. I don't know how often we will be using them in the future, but would definitely be nice to have from an integrator side where we don't always have the software or ability to program some of these less common devices.

Most B&R PLCs have OPC UA support. Are you using one that doesn't or is there some other reason you want a native driver?