Hidden alarm does not appear in the alarm band because ‘alarm grouping’ is enabled
A hidden alarm which is a member of a grouped alarm is not indicated on the hidden alarm band if the alarm grouping is enabled on the filter tab on the alarm and event list configuration. Is it possible to indicate on the alarm band that hidden alarms are active without switching the 'alarm grouping' off?
Group alarm active with first alarm -
Second alarm in object hidden alarm list but not in Process Alarm list
If there is another alarm after the first alarm in the group no indication of ‘hidden’ on the alarm band.
If the original alarm is cleared then the ‘hidden’ alarm becomes ‘active’ as indicated on the faceplate
If the third alarm occurs no indication of ‘hidden’ on alarm band; if the initial alarm is cleared then the group alarm is no longer in the alarm list and hidden alarm is indicated