Asentria SiteBoss 530 User Manual
92
Data Alarm Macros
Data alarm macros provide a way to define up to 100 equations that can be used in one or more data alarm
equations. Each macro consists of an equation and an associated name that can be used to reference the macro
in a data alarm equation. They simplify the creating of data alarm events, particularly where more than one event
uses the same expression in its equation. Also, since the macro expression is evaluated only once per record, it
improves the efficiency of alarm processing.
Data alarm macros can be configured using the setup menu or setting keys:
Menu
Setup -> Alarm/Event Definitions -> Data Alarm/Filter Settings -> Data Alarm Macro
Settings Keys
event.macro[].name
event.macro[}.equation
The macro equation is entered the same way as a data alarm equation. A macro equation cannot refer to another
macro; in such a case, the expression involved will always evaluate to FALSE. The macro equation can be up to
160 characters in length.
The macro name is the name by which the macro is referenced in any data alarm equation, and can be up to 16
characters in length. Macro names are subject to these restrictions:
•
Macro names and data field names are not case sensitive; therefore DLT35 and Dlt35 are equivalent.
•
A macro cannot be given the same name as a data field or another macro.
•
The following names are reserved and should not be used as macro names or data field names:
°
IOx (where x is a number)
°
FALSE
°
IPRC
°
AND
°
TRAP
°
OR
°
FTP
°
IS
°
TRUE
°
ISNOT
Using a macro name or data field name that starts with AND or OR will cause that part of the expression to
always evaluate to FALSE.
Macro names and data field names cannot start with $.
When used in a data alarm equation, macros are always compared to TRUE or FALSE. Any other comparison
yields a result of FALSE.
Example
Settings
•
event.data[1].enable
=ON
•
event.data[2].enable
=ON
•
event.data[1].equation
=m1=true
•
event.data[2].equation
=m1 = true and f2 = "0"
•
event.field[1].start
=7
•
event.field[2].start
=6
•
event.field[1].length
=1
•
event.field[2].length
=1
•
event.field[1].name
=f1
•
event.field[2].name
=f2
•
event.macro[1].name
=m1
•
event.macro[1].equation
=f1="1"
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