Analog Alarm (Alma); Relay Ladder - Allen-Bradley Logix5000 Reference Manual

Analog Alarm (ALMA)

Operand Type
ALMA tag ALARM_ANALOG
In REAL
DINT
INT
SINT
ProgAckAll BOOL
ProgDisable BOOL
ProgEnable BOOL
HHlimit REAL
HLimit REAL
LLimit REAL
LLLimit REAL
The ALMA instruction detects alarms based on the level or rate of change of an
analog value. Program (Prog) and operator (Oper) control parameters provide an
interface for alarm commands.
Operands:

Relay Ladder

Format
Structure
Tag
Immediate
Tag
Immediate
Tag
Immediate
Tag
Immediate
Immediate
Immediate
Immediate
Immediate
Rockwell Automation Publication 1756-RM003N-EN-P - October 2011
FactoryTalk Alarms and Events Logix-based Instructions (ALMD, ALMA)
Description
ALMA structure.
Value is copied to In when instruction executes. The alarm input
value, which is compared with alarm limits to detect the alarm
conditions.
Value is copied to ProgAckAll when instruction executes. On
transition from cleared to set, acknowledges all alarm conditions that
require acknowledgement.
Value is copied to ProgDisable when instruction executes. When set,
disables alarm (does not override Enable Commands).
Value is copied to ProgEnable when instruction executes. When set,
enables alarm (takes precedence over Disable commands).
Relay ladder only.
High High alarm limit.
Relay ladder only.
High alarm limit.
Relay ladder only.
Low alarm limit.
Relay ladder only.
Low Low alarm limit.
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