The OPC Alarms and Events specification is also maintained by the OPC Foundation, and defines the exchange of alarm and event type message information, as well as variable states and state management.
12.
The trouble is that the mailing lists don't have much appeal to anyone aside from hardcore Wikipedians : subscribing to lists not meant explicitly for announcements only is like attaching a fire hose directly into your inbox, and the " digest " feature meant to make reading the lists easier is in variable states of repair.
