Example: Trend

The application shows how to generate a sinusoidal signal with an amplitude of 500. The signal is recorded when the amplitude is greater than or equal to 200. The recording condition for this is set in the Trend Recording object in the Record Settings section. The object is located below the Trend Recording Manager object.

For more information, see: Object: Trend Recording

This application shows the implementation of how to configure the trend element for long-term recordings.

In the application, the power of a solar station is simulated. The power (variable: rCurrentPower) is recorded every 20 seconds. The data is stored in the database every minute.

You can adjust the recording interval in the Advanced Trend Settings dialog and the Measure in every n-th cycle input field. You can adjust the save interval in the Store every N milliseconds field of the Trend Storage object.

For more information, see: Dialog: Advanced Trace Settings

The sample application generates three signals which are recorded and visualized by the trend element. The recording can be started with the "Record" button.

The application shows how to use the Measurement slowdown factor option to adjust the recording interval of the trend recording at runtime.

For more information, see: Record Settings