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CHAPTER 2 - Expressions
CHAPTER 2
Expressions
This chapter describes the use of expressions within scripts.
Expressions consist of operators and operands:
♦
Operators are relational, arithmetic, logical and include many functions.
♦ Operands are constants or point variables.
Expressions can be used in a script as part of a statement (refer to chapter 3 Scripts, chapter 4 CXSupervisor Script Language, and Chapter 6 Functions and Methods). However expressions can be
applied to the following actions directly using the associated Expression: or Digital Expression: field:
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Blink.
♦
Close page.
♦
Colour Change (Analogue).
♦
Colour Change (Digital).
♦
Display Status Text.
♦
Display Text Point.
♦
Display Value.
♦
Edit point value (Analogue).
♦
Edit point value (Digital).
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Edit point value (Text).
♦
Enable/Disable.
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Horizontal move.
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Horizontal percentage fill.
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Resize height.
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Resize width.
♦
Rotate.
♦
Show page.
♦
Vertical move.
♦
Vertical percentage fill.
♦
Visible.
The following example of a simple expression contains a point (‘redcars’) attached to a particular
object with an appropriate object action, Resize (Height). At runtime, once the value of the point has
been met within the attributes declared within the Active Expression Range/Required Height: fields,
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