I guess this post will make me the second to ask for A&E support…
I support 6 sites with Emerson DeltaV control systems. The DeltaV A&E OPC Server is a COM based DA server.
DeltaV A&E info:http://www2.emersonprocess.com/siteadmincenter/PM%20DeltaV%20Documents/ProductDataSheets/PDS_OPC_EventsServer.pdf