Visara Master Console Center Scripting Guide Manuale Utente Scaricare il pdf (Pagina 42)

Chapter 3 Script Syntax

Scripting Guide 42

Manifest Constants

Intrinsic manifest constants have been defined to make scripts easier to

read, write, and maintain. Constants are the equivalent to the value they

represent and can be used anywhere in a script. For example, instead of

using:

ALARM( 1)

Use the following:

ALARM( ON)

The second example is clearer because turning an alarm on is intuitive,

while turning an alarm “1” has no meaning. Also, the value representing

a constant may change, but the constant name always remains the same.

Although the following example is a valid numeric expression, it is not the

true intention for the use of manifest constants:

%Num := TRUE + 1 //%Num would contain 2

Note: Because values may change, Visara strongly recommends

using the constants, NOT the values they represent.

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Visara Master Console Center Scripting Guide Manuale Utente Pagina 42