Options on the Width tab

The following table shows options on the tab.
Options
Description
Expression
Specify a tag name or an expression that will evaluate to numeric values at runtime.
An expression is a mathematical or logical equation that returns a value. It can contain tag names; constants; mathematical, relational, logical and bitwise operators; and built-in alarms and events functions.
A tag name can be used as an expression.
Expression range
Specify the range of values for the expression, including:
  • Use tag's min and max property values
    If you have specified a tag in the
    Expression
    box, click this button to use the tag's minimum and maximum values to define the range of values for the expression. This option only applies to tags for which minimum and maximum can be defined, such as HMI tags.
  • Use constant
    To use constant numeric values to define a range of values, click this button and specify values for minimum and maximum.
  • Read from tags
    To define the range of values using one tag's value for the minimum and another tag's value for the maximum, click this button and then specify a tag for minimum and another for maximum. Using this option, when the animation for an object is started, the tags' values are read once to set the minimum and maximum values. The tags are not read again after, nor are the minimum and maximum values changed.
Horizontal change (Percent)
Specify the minimum and maximum percentage of horizontal change.
  • At minimum
    The width of the object when it is selected is the base size (100 percent). Type the width the object is to be when the expression evaluates to its minimum value. This is a percentage of its base size. You can also grab a side handle of the object and drag until it is the correct minimum width.
  • At maximum
    Specify the width the object is to be when the expression evaluates to its maximum value. This is a percentage of its base size. You can also grab a side handle of the object and drag until it is the desired maximum width.
Anchor
Specify which part of the object remains constant, including:
  • Left
    Select this if the left side of the object is to remain constant. As the value of the expression changes, the object grows to or shrinks from the right.
  • Center
    Select this if the midpoint of the object is to remain constant. As the value of the expression changes, the object widens and narrows equally on either side of its midpoint.
  • Right
    Select this if the right side of the object is to remain constant. As the value of the expression changes, the object grows to or shrinks from the left.
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