Event definition

Events represent normal system, application, or user occurrences that produce status messages. A typical event occurs when an operator logs on to an application at the beginning of a work shift. Application Server can detect events, store them as historical data, and report them to client applications.

An event indicates a significant occurrence that is detected, reported, and saved as historical data. Events can be detected by any Application Server component including automation objects and the OCMC.

Events provide a means for any software component to log information about a system, application, or operator action. Application Server components use an event API to send event messages to Alarm/Event distributors and the Historian. Also, events are sent to client applications like AVEVA OMI to be shown in real-time trends or reports.