Can I use an alarm template to create Information Event when a numeric parameter changes from the previous value?
This is not possible as far as I know.
Is there a specific use case for this?
If the goal is to see the history and know when and how the value changed, I believe that real-time trending can provide that information.
If the goal is to trigger actions when the parameter matches certain thresholds, an actual alarm template feels like the way to go. Worst case, a scheduled task could be set up triggering an automation script to periodically check the parameter value with custom logic.