View a dashboard at a past time

Use the Live and View at a time control in the title bar of a dashboard to switch from live values to the values from an earlier time, and to step forward and back through them. The control appears only on a dashboard that has a title bar, and only when the profile has a designated historian that holds history for the tags on the dashboard. Set up the historian with Designated historian, and record the history with How to configure data logging.

1. Select View at a time in the title bar. The time picker opens.
2. Select a day in the calendar. Days with no stored values for the tags on the dashboard are unavailable.
3. Set the time with the Hour and Minute lists, or with the step buttons on either side of them. The outer step buttons, -1h and +1h, move the time by an hour. The inner step buttons, -15m and +15m, move it by 15 minutes.
4. Select View. The dashboard shows the values at the chosen time, and playback starts from that time.
5. Optional: Select the step back or step forward button to move through the values by the jump size. The jump size list runs from 15 seconds to 1 day, and its default is 15 minutes.
6. Optional: Select the play or pause button to start or stop playback. The speed list sets the playback speed from 1x to 3600x.
7. Select Live to return the dashboard to live values.

The check worked when the time appears in the title bar in place of View at a time, and the values change as you step through them. Selecting Live returns the control to Live, and the values update as new values arrive.

When past values are not available

What you see	Cause	What to do
The Live and View at a time control does not appear	The profile has no designated historian, more than one, or the Historians feature is not licensed.	Refer to Designated historian and Licensing.
View at a time is greyed out, or the picker shows "No stored samples for the tags on this dashboard yet."	The historian holds no values for the tags on the dashboard.	Check that the tags are recorded, as described in How to configure data logging, and wait until values are stored.
A text value, such as a message or a status, stays empty at the chosen time while numbers show	The designated historian is an InfluxDB historian, which stores only tags that hold a number.	Make a TAG Local Historian or TAG SQL Historian the designated historian.
A chart is empty or has gaps at the chosen time	A chart window reaches further back than the stored values.	Choose a later time, or refer to Live and past data to see how a window fills.

To set the window that a chart shows, refer to Data binding.