Software Customisation
Reference Manual
PML 1 Expressions
PML 1 Expressions
This appendix explains the PML 1 expressions package. These facilities are needed within AVEVA products, for example, to define report templates in AVEVA E3D™.
Note:
Generally, all these facilities are compatible with PML 2.
Expressions have types. For example, you can have numeric expressions, text expressions and logical expressions. All the elements in an expression must be of the correct type. For example, if you have a two numbers, x and y, and two text strings text1 and text2, the following expression is meaningless:
x + text1
$
However, both of the following expressions are valid:
x + y
$ adds the values of the numeric variables.
Text1 + text2
$ concatenates the two text strings.
The following types of expressions are available:
Expression
Logical Expressions
Logical Array Expressions
Numeric (Real) Expressions
Real Arrays
Text Expressions
1974 to current year.
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