800xA OPC AE Server
Maybe I misunderstand your question, but in 800xA Configuration manual:
OPC DA Program Identities
The Program Identity for the System 800xA OPC DA Server to be used by third
party OPC DA clients is ABB.AfwOpcDaSurrogate (local server).
When a new client connection is established the new client will share a running
ABB.AfwOpcDaSurrogate process if possible. If not, a new process will be started
for the new client connection. Use the DCOMCNFG tool to set the DCOM security
setting, see DCOM Security Settings for OPC on page 447.