Historical data

The History Manager allows you to define the frequency and quantity of simulation data that you want to save for historical reference. The software saves the data as part of a snapshot. You can access and manage the data further in the Snapshot Manager, as shown in the following conceptual diagram.

The default configuration settings in the History Manager are appropriate for most scenarios. If you change the configuration settings, then the changes apply to the active simulation but do not affect other simulations saved in the Repository. The software saves recent data at shorter time intervals and older data at longer time intervals. There are three data collections: Fast, Medium, and Slow. By changing the number of data points in each data collection, you define how much data the software saves in each data collection as well.

Concepts

• The configuration settings in the History Manager define the historical data that the software saves in a snapshot.

• The software captures historical data only for a finite period of time.

• You can choose to save historical data for only the variables that appear in a Trend or for all favorite variables in the simulation.

• The History Manager always shows time in terms of seconds.

Actions

• For each data collection:

  • Define the frequency at which to save data.

  • Define the number of data points to include in the historical data.

• Select whether the historical data includes only the variables that appear in a Trend or includes all the favorite variables in the simulation.