Serving as a bridge between COM and OPC UA components, the Alarm and Events proxy and wrapper enable existing A&E COM Clientsand Serversto connect to UA Alarmsand Conditionscomponents.

Simply stated, there are two aspects to the migration strategy. The first aspect enables a UA Alarmsand Conditions Clientto connect to an existing Alarms and Events COM Servervia a UA Serverwrapper. This wrapper is notated from this point forward as the A&E COM UA Wrapper. The second aspect enables an existing Alarms and Events COM Clientto connect to a UA Alarmsand Conditions Servervia a COM proxy. This proxy is notated from this point forward as the A&E COM UA Proxy.

An Alarms and Events COM Clientis notated from this point forward as A&E COM Client.

A UA Alarmsand Conditions Serveris notated from this point forward as UA A&C Server.

The mappings describe generic A&E COM interoperability components. It is recommended that vendors use this mapping if they develop their own components, however, some applications may benefit from vendor specific mappings.