'Acknowledge Point' or 'Acknowledge Tag' will Acknowledge the selected Tag or Block:Parameter.
If there are multiple alarms for a Tag (e.g. High and High Deviation), the Higher Priority Alarm is displayed and is acknowledged.
There is an Alarm Precedence: 1) Hi-Hi and Lo-Low 2) Hi and Lo, 3) ROC and lowest 4) Deviation Alarms.
Alarm Ack only acknowledges the highest priority alarm for that tag. If there are multiple alarms for a tag, the next Alarm will appear immediately in the alarm summary after the Alarm Ack. For more information, see Alarms and Alarm Acknowledgement.