Thank you for posting this question. Please see the discussion between Alex and Alton contained in this thread:
In particular, they discuss the use of the SetRemotePropertyBindings to bind a property from a newly created Thing (which has inherited the IndustrialThing ThingShape) with a remote property that represents a KEPServerEX tag.
Please let us know how it goes, especially if you run into any difficulty implementing the solution they describe.
Using demo versions of KEPServer and Thingworx 8, I was able to confirm my question. I was wondering if I could create a Thing myself and bind KEPServer tags to properties on that Thing that I also created myself. The tutorials I've seen all mention using the Discover section of the IndustrialConnection Thing instance to find tags and "Bind to New Entity".
The conditions of binding tags to existing properties is that the Thing you bind the tags to must inherit from some version of the "Remote Thing" Thing Template, and it must implement the "IndustrialThingShape" Thing Shape. Also, there is a property representing the Industrial Connection (the KEPServer Thing instance) that must be populated.
Once these conditions are met, you can go to "Manage Bindings" in a Thing's properties and drag tags to existing properties under the "Remote" section.