Alarm activation aggregates can be useful if you use alarm as your trigger for time interval changes. Usage is quite simple and straight forward, the alarm activation sets the aggregate interval.
To define, aggregates base on Alarm activations, please check the “Aggregate by Alarm (trigger)” check box and fill in the alarm ID or IDs.
Simple example:
We will log production based on the production line activation signal.
1. We will define our activation signal. For this purpose, we will use CAS Alarms. Eg. we will start by creating CAS Alarm:
2. Now we will use the aggregated data log to aggregate the data based on the alarm activation:
And the result:
Alarm activations:
And corresponding aggregated data
As you can see, for each alarm activation period, you get one row in the aggregated data log.