800xA Hmi with DeltaV Controllers
In our case it is based on the PLC Connect product with custom composite objects. Each PLC Connect server of the redundant pair connects to a seperate application station (DeltaV product) with the required OPC licenses. I understand this is an ABB centered forum...but I would not recommend it unless the DeltaV portion of the site is a small component of the overall HMI system. It works well, but is quite a bit of work since you have to build everything. Now if it's just something like 200 points, thats not a big deal.
You just don't get the functionality you would with the DeltaV product. Similar to how an 800M controller would work with the DeltaV HMI.