Part 4: Introduction to the Historian and Trends

Help Contents

Introduction

The free Fernhill SCADA runtime has a built-in historian.

You can record the value of any Data Point Tag in the historian simply by enabling the historical storage option on the tag properties.

In this part of the getting started guide you will try out the following tasks:

  1. Turn on historical storage for some tags.
  2. View a temporary trend plot of a data point tag.
  3. Create a trend tag.
  4. Create a link to the trend tag from a graphic page.
  5. Open a trend by clicking a link on a graphic page.

Introduction to the Historian and Trends

  1. In the Tag Window select the Motor Current tag. In the Properties Window set these property values:

    PropertyValue
    MaxScale20
    HistoricEnableTrue
    HistoricSignificantChange0.1
    TemporaryTrendInterval5m

    The properties window showing historical storage enabled for the Motor Current tag.

    When you set the HistoricEnable property to True, Fernhill SCADA will start recording the value in the historian.

  2. In the Tag Window right-click the Motor Current tag then select View Trend. A trend of the Motor Current value is displayed:

    A trend of the Motor Current tag

    Note: This is a temporary trend plot that is configured from properties of the Analog Data Point Tag. The MinScale and MaxScale properties define the Y Axis scale. The TemporaryTrendInterval property defines the X Axis interval.

  3. Close the Trend Window. In the Tag Window select the Pump State tag. In the Properties Window set these property values:

    PropertyValue
    HistoricEnableTrue
    TemporaryTrendInterval5m

  4. In the Tag Window right-click the Pump State tag then select View Trend. A trend of the Pump State value is displayed:

    A trend of the Pump State tag

  5. Close the Trend Window. In the Tag Window right-click the Getting Started folder then select Add new tag then Core then Trend. Press Return to accept the default name of Trend:

    A new trend tag

    Note: The Trend Plot Tag stores the definition of a trend in a tag. This tag supports multiple pens.

  6. Double-click the Trend Plot tag to open the Plot Editor:

    The new trend plot tag open in the plot editor.

  7. Click the X Axis of the trend to select the X Axis and main area of the trend:

    Selected the main part of the trend.

  8. In the Properties Window, set these property values:

    PropertyValue
    TitlePump Monitor
    XAxisInterval5m
    XAxisOffset30s

    Updated trend properties.

  9. In the Tag Window drag the Pump State tag onto the trend. Then drag the Motor Current tag onto the trend:

    The configured trend.

  10. Click the Save icon Save icon in the toolbar to save your work.
  11. Close the Trend Window.
  12. In the Tag Window, double-click the Graphic tag to open the graphic page. Drag the Trend tag onto the graphic page just below the status monitor text.

    Drag trend tag onto a graphic tag.

  13. Select Link to Trend from the menu. Adjust the FontSize to 24 points. Drag the text to align with other items on the page. Press CTRL+SHIFT+A to cancel the selection. The graphic page should now look like this:

    The graphic page with the link to the trend added.

  14. Click the Save icon Save icon in the toolbar to save your work.
  15. On the toolbar, select Run mode icon Run Mode icon.

    The graphic page in run mode.

    Note: In run mode, the animations and operator actions are active.

  16. On the Graphic Page click the link Getting Started.Trend to open the trend.

    The trend opened from a link.

    Note: In the Configuration Tool clicking a navigation link opens the target in a new tab. In the Operator Interface clicking a navigation link changes to the new page.

Next Steps

Continue with Part 5: Copying and Pasting.

Further information

Configuration Tool Plot Editor

To learn about editing trends.

Glossary

For the meaning of terms used in Fernhill SCADA.