Trend Window

Help Contents

Introduction

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

Trend window showing two tags

The Trend Window contains the following elements:

Trend Types

Two types of trend are supported:

Temporary Trend

To display a temporary 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 stores 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:

Editing Trends

Using the Trend Window you can do any of these edit operations:

Edit the Trend Title

To edit the trend title:

  1. Click on the data plot area of the trend.
  2. In the Title section of the Properties Window, enter a new value for any of these properties:

Change Text Sizes or Font Faces

To change font faces or text sizes:

  1. Click on the data plot area of the trend.
  2. In the Text Styles section of the Properties Window, enter a new value for any of these properties:

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.

Locate the Data Source of a Pen

To locate the data source of a pen in a trend:

  1. Select the pen in the trend.
  2. Right click and select Show in Tag Window.

    The Data Point Tag will be selected in the Tag Window.

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 Order of Pens 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.

Change the Attributes Displayed with each Pen

Pen attributes provide additional information about the data source. For example:

To change the attributes displayed with each pen:

  1. Select the pen in the trend.
  2. Right click and toggle any of these options:

Configuration Properties

The Trend Window allows you to change these properties:

Trend Properties

To edit Trend Properties select the plot area of the trend.

When the data plot area is selected, you can change these in the Properties Window:

Title
TitleThe text that appears at the top of the trend.
TitleColorThe color of the title.
TitleFontFamilyThe font family of the title.
TitleFontSizeThe size of the title text.
X Axis Defaults
XAxisIntervalThe time span of the X axis when the trend is opened.
XAxisOffsetThe offset of the current time indicator from the right Y axis.
XAxisTrackingWhen set to True, the trend moves the X axis with current time.
Text Styles
AxisFontFamilyThe font family used for text on the X and Y axes.
AxisFontSizeThe size of the text used on the X and Y axes.
PenFontFamilyThe font family used to display each pen at the bottom of the trend.
PenFontSizeThe size of the text used to display each pen at the bottom of the trend.

Pen Properties

To edit Pen Properties select a pen at the bottom of the trend.

When a pen is selected, you can change these in the Properties Window:

Properties
ColorThe color of the pen.
LabelThe label to display in the pen at the bottom of the trend.
SourceThe Data Point Tag that provides the data for the pen.

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.