The HD time periods table is a special view linked to the so called "time periods", which is an extended feature of the time based HD data store. The time periods need to be defined in the configuration dialog of the timebased HD datastore before they can be displayed in the time periods table. Furthermore, the configured time periods must have been recorded at least once from the beginning to the end in order to display their data in the table.

By means of the time periods, ranges of time which are delimited by a start event and a stop event (trigger condition, signals etc.) can be selected from an HD time based data store and put on display. Temporal limited time ranges (hours, days, months, shifts etc.) are possible as well.

Moreover, KPIs or other statistical quantities can be evaluated over these time periods and stored, like info fields in a data file.

TheHD Time period table supports the unit system, i.e. the numeric values can be converted to another unit system for display.

For more information about the unit system see Unit table.

These are the topics: