Specifications

9032294 E2 Application Views
5-7
Hub Application
Gauges Group
in the Gauge Table Entry view. To change the information in a field, access the
Table Row Update view by clicking the Table Update button.
Before updating any of the Gauge Table fields, turn the alarm off using the
Gauge State field. Turning the alarm off and on again will affect the data; the
sampling data, Value, Peak, and Status are not lost but any updates to the
index will fail since they are read-only.
Index
Displays the index number for the entry. These are allocated by the Alarms
Subsystem.
Object ID
Displays the Object ID and qualifier of the item to be monitored.
Item Type
Displays the type of object. Possible values are Counter, SignedMeter, or
UnSignedMeter. Counters always have positive values. UnSignedMeter can
be positive or negative. SignedMeter explicitly state positive or negative.
SPA
Displays the number of samples per average used to calculate the Alarm
Value. Possible values are Non Averaging, Two Samples, Three Samples, and
Max Samples. The default value is 4, Max Samples. If a value of 1 is used
there is no averaging and the Value field shows the most recent sample.
Period
Displays the number of seconds between samples. The averaging period is the
Period multiplied by the SPA.
Value
Displays the most recently computed average. For a signed or unsigned meter,
this is the average of the samples. For a counter, the value is the average of
the differences between successive samples.
Counters and unsigned meters are unsigned 32-bit values with a maximum
value of 4294967295. Signed meters are signed 32-bit values and have a
maximum value of + or - 21474833647 divided by the value in the SPA field.
Peak
Displays the highest recorded alarm value. This is a 32-bit value, signed or
unsigned depending on the Item Type.
Threshold
Displays the value at which the Gauge State moves from the Ready state to
the Fired state and the Threshold Action is taken. This is a 32-bit value,
signed or unsigned depending on the Item Type.
Recovery
Displays the value at which the Gauge State recovers from the Fired state to
the Ready state and the Recovery Action is taken. This is a 32-bit value,
signed or unsigned depending on the Item Type.