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-8
-3
-9
ALARM
-8
-3
-8
OK
Incremental Mode
In Incremental Mode, alarms and warnings occur when the difference between two
consecutive measurement values is less than the minimum threshold value or greater
than the maximum threshold value. This difference means the alarm threshold is a
slope instead of a fixed value.
Minimum
Threshold
Value
Maximum
Threshold
Value
Current
Measurement
Value
Previous
Measurement
Value
Measurement
Delta
Result
10
60
200
150
50
OK
10
60
199
200
-1
ALARM
-50
50
300
260
40
OK
-50
50
300
200
100
ALARM
-50
50
200
240
-40
OK
-50
50
400
500
-100
ALARM
-6000
200
0
1000
-1000
OK
-6000
10
130
110
20
ALARM
-6000
10
130
125
5
OK
-10
8000
150
165
-15
ALARM
-10
8000
1200
0
1200
OK
Tips:
l
Minimum Threshold values should be negative, otherwise a decreasing
parameter will always generate an alarm.
l
Maximum Threshold values should be positive, otherwise an increasing
parameter will always generate an alarm.
l
Set Minimum Threshold values to large negative numbers to disable alarms for
decreasing values (see the green values above).
