Hi Charles,

In a dashboard you could create the following query:

• Data Source: Get Alarms
• Filter: Select the column IsActive and set the value to False (This filter will allow you to look for history alarms)
• Filter: Root time. Here you can define a time filter. In case you would like to use a time range, you could define two filters instead of one. Another option is passing the selection from a time range feed
• Aggregate based on Alarm ID (choose 'Get the Count')
• Group by: Select the column 'Parameter Description'. Using 'Parameter Description'

You can display the result of the query in a table component or a column and bar chart component.

Please keep in mind that the query could take some time to display the result.

Hope it helps.