Change the configuration at run time

If you select the Allow runtime changes option when you configure your historical trend, operators can change some aspects of a historical trend during run time.

Configure a historical trend during run time

1. Select the trend in WindowViewer. The Historical Trend Setup dialog box appears

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2. In the Chart Start area, type the starting date and time of the chart.

3. In the Display Mode area, select the type of historical trend.

4. In the Chart Length area, type the length of time to show on the trend, and then select the time increment for the length.

5. In the Chart Range area, type the percentage of engineering unit scale shown as the vertical range of the trend.

6. In the Tags area, select each Pen# to assign a tag to the trend pen. The Select Tag dialog box appears and shows those tags for which logging is enabled.

7. Double-click on the name of a tag to assign it to the trend pen.

8. Select OK to save your run-time changes to the trend.