Trend Window

Introduction

The Trend Window allows you to view and optionally configure trends:

Trend window showing two tags

Two types of trend are supported:

Ad-hoc Trend

To display an ad-hoc trend:

  1. Ensure the Tag Window is active
  2. Right click on a Data Point Tag, which has historic storage enabled.
  3. From the pop-up menu, select Trend

Note: Trends are not supported on string tags.

Preconfigured Trend

A preconfigured trend is a Trend Page Tag stored in the tag database. The Trend Page Tag defines these trend parameters:

To create a new preconfigured trend:

  1. In the Tag Window, right-click on a folder and select Add New Tag, followed by Core, then Trend. This will create a new trend tag in the tag database.
  2. To set the name of the trend tag do one of the following:
  3. To edit the trend do one of the following: In either case the Trend Window will open.
  4. Choose the tag you want to display on the trend and drag it on to the trend window.
    Note: Only Data Point Tags with historic storage enabled can be added to a trend.
  5. Click the Save button to save the trend definition to the tag database.

To edit an existing preconfigured trend do one of the following:

Add a Pen to a Trend

To add a pen to a trend:

  1. Select the Data Point Tag you want to add in the Tag Window.
  2. Drag the tag onto the trend.

Remove a Pen from a Trend

To remove a pen from a trend:

  1. Select the pen in the trend.
  2. Right click and select Remove.

Change the Pen Order in a Trend

To change the order of pens in a trend:

  1. Select the pen in the trend.
  2. Drag the selected pen to its new position.

Further Information

Graphics Trend Tag

For information about storing trend definitions in the tag database.

Data Tags

For information about tags that store data historically.

Fernhill SCADA Configuration Tool

To learn about the Fernhill SCADA Configuration Tool.

Glossary

For the meaning of terms used in Fernhill SCADA.