Unitary | Pre-APOGEE | APOGEE | BACnet | PXC.A |
|---|---|---|---|---|
● | ● | ● |
Syntax
DEFINE(abbrev,string)
abbrev | Abbreviation used in other PPCL statements. Represents the string parameter |
string | Actual text string that will be substituted where the abbreviation is used. The string text usually contains a significant portion of a long point name. |
Use
Creates an abbreviated notation for a long point name. DEFINE allows program logic to be easily duplicated provided your facility uses a structured naming convention for point names.
A percentage sign (%) must be placed before and after the abbreviation when it is used in the program.
For PXC.A controllers, it is recommended to use GOTO (Go to line).
Example
10 DEFINE(AHU,”BUILDING1.AHU01.”)
20 ON(“%AHU%SFAN”)
If DEFINE is not used, this same line of code looks like the following:
20 ON(“BUILDING1.AHU01.SFAN”)
Notes
This statement is executed when added to the automation station and does not require enabling or execution in the normal program flow.
Abbreviation texts that begin with C will fail to compile.