Specifications

Chapter 1 - AsconACLib
3
1-3 Description of the individual Function Blocks
1-3-1 ALARM_ABSOLUTE MODULE
FB Prototype ALARM_ABS
Input parameters
Output parameters
Description This function block generates only independent ABSOLUTE high and low alarms.
Alarm description
Default Values Table
Label Type Description
VALUE REAL Input value
ABS_HIGH REAL Absolute Alarm Max
HY_AHIGH REAL Hysteresis Absolute Alarm Max
ABS_LOW REAL Absolute Alarm Min
HY_ALOW REAL Hysteresis Absolute Alarm Min
Label Type Description
ABS_H BOOL Absolute High Alarm
ABS_L BOOL Absolute Low Alarm
VALUE
ABS_HIGH
HY_AHIGH
ABS_LOW
HY_ALOW
REAL
REAL
REAL
REAL
REAL
¡
¡
¡
¡
¡
BOOL
BOOL
ABS_H
ABS_L
¡
¡
Alarm Type Description
Absolute High
The output ABS_H is active if it is TRUE the condition:
VALUE > (ABS_HIGH + HY_AHIGH)
Absolute Low
The output ABS_L is active if it is TRUE the condition
VALUE < (ABS_LOW - HY_ALOW)
Input Default value
VALUE 0.0
ABS_HIGH 0.0
HY_AHIGH 1.0
ABS_LOW 0.0
HY_ALOW 1.0
Output Description
ABS_H FALSE
ABS_L FALSE