Modify the Navigation display to trigger the Critical Condition Summary window

For the Critical Condition Summary window to be displayed automatically, the Navigation display (or any display that is always open on the easy eXtended Operator Station [ezXOS] computer) needs to be modified to subscribe to the criticalAlarm topic. The standard NAVMENU.XEM can be used as a reference for modifications that would need to be added to a custom Navigation display. The eXtended Editor (XE) can be used to view the display and modify a custom display.

There are two key areas that need to be added, or modified, to a custom Navigation display:

1. A Publish/Subscribe (PubSub) Subscriptions object needs to be added to the display. In the sample display, this object is named pubCriticalAlm. The PubSub object needs to have a SubscriptionValueChanged event that will be used to trigger the display. In the sample display, refer to the function pubCriticalAlm_SubscriptionValueChanged() for details on how to code this event.

2. Verify that the ezXOS computer has DNA Permission - Critical_Alarms set. If this is not set, then the Critical Condition Summary window should not be displayed. In the sample display, refer to the function sqlPermCheck_StopEvent() for details on how to code the display for this permission.