Using the Historic View

The Historic view provides a linear chart of all .uhh files for a selected Group that have yet to be archived from a device.

To display the Historic view you can either:

• From the Groups screen, select Options - Group History on the Group required:

• From the Live view of a Group, select Settings - Historic.

• From the Group Messages screen, select Options - Group History on the message required.

The Historic Chart screen displays:

Select anywhere on the chart to display the data for the point in time indicated:

Select as required:

• Move Forward - Moves forward through time one increment at a time as defined by the recording intervals.

• Move Backward - Moves backward through time one increment at a time as defined by the recording intervals.

• Channels - Displays current channel values.

• Close to close the details.

The Historic Chart displays:

• Timeline - A time scale, initially determined by the recording interval.

  Tip - This updates automatically when you use Zoom in and Zoom out.

• System Alarms - Indications of System Alarms being triggered, select to display details.

• Notes - Notifications of activity on the Group, for example, the acknowledgement of an alarm, or a user logging in. The number in red indicates the number of messages within each Note. Select a Note to display the details, for example:

  

• Periods of Lost Data - Highlights gaps or inconsistencies in the data collection, these are indicated by shaded areas or dashed lines.

• Settings - Select from:

  • Return to Live view - Select to close the Historic Chart and open the live linear Group chart for this Group.

  • Zoom In - Select to increase the magnification of the display to show less data but in more detail.

    Tip - You can also zoom in on a specific area manually, see Zooming in on a Specific Time Period for details.

  • Zoom Out - Select to decrease magnification of the display to show more data but with less detail.

  • Reset - Select to clear any formatting and return to the default chart.

  • Go To - Select to define a time period to display. The Go To screen displays:

    

    Select from the following and then select Go To :

    • Custom range - Enter a start and finish date and time to display.

    • Date - Select a specific date to display.

  • Channels - Displays a list of the channels included in the selected Group:

    • Select an individual channel to display the historical trend for the selected channel.

      Tip - Select Settings - Reset to return to the default view.

• Navigation arrows - Use the arrows to move through time as required:

  • Single arrows to move by small increments.

  • Double arrows to move by double increments.

    Tip - The length of time for an increment is determined by the recording interval, see Configuring Groups Settings for details.

Zooming in on a Specific Time Period

You can also zoom in on a period of time from a screen:

• From an EPM Data User Interface, touch the screen where you want to start, or finish the zoom and then drag to create a rectangle containing the data of interest

Or,

• If you are logged in remotely or have a mouse plugged in to your device, click, hold and drag to create a rectangle containing the data of interest:

  

  The Apply zoom? message displays:

  

  Select Apply to zoom in, or Cancel to leave with no change.

  Tip - Select Settings - Reset to return to the default view.

Last update - July 2026