Event subscriptions and display filters
Event subscriptions and display filters limit the information that is displayed in the Alarm and Event Summary. You can configure event subscriptions, display filters, or both, to refine the information displayed in the Alarm and Event Summary at runtime. Keep the following differences in mind when choosing the configuration of subscriptions and display filters:
- Event subscriptionsEvent subscriptions are used to control the events that are sent to an Alarm and Event Summary. The default subscription configured for the Alarm and Event Summary includes events of any priority from all areas and event sources in your system. Create an event subscription that subscribes to events from a specific area to limit the alarms received by the Alarm and Event Summary to that area.
- Display filtersA display filter does not limit the events the Alarm and Event Summary receives--it only limits the information that the Alarm and Event Summary shows. If you remove a display filter, all of the alarms and events that were filtered out or hidden are shown again.Use display filters if you need to limit the information displayed by the alarm summary temporarily. For example, if you routinely need to see alarms from all areas, but occasionally want to see alarms from only one area, create a display filter for the one area, and apply it to the Alarm and Event Summary when you need to see data for that area alone.
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