Echelon i.LON 100 e2 Internet Server - Manual (Page 97)

i. LON 100 Internet Server Programmer’s Reference
Property Description
<InputDataPoint> The input data point for this Alarm Generator. The data point must be
referenced by its <UCPTpointName>.
Each time this data point is updated, its value will be compared to the
value of the compare data point using the comparison function defined by
the <UCPTcompFunction> property. If the result of the comparison is
True, an alarm will be generated.
The <UCPTpointSatus> of this data point will be updated to the status
AL_ALM_CONDITION when an alarm is generated, unless the
<UCPTcompFunction> selected for the Alarm Generator is FN_LIMIT. In
this case, the status will be updated to any of four alarm statuses, based on
the offset limit that caused the alarm. For more information on this, see
Hysteresis Levels and Offset Limits on page 7-13.
You can register the input data point with the Alarm Notifier application
to generate alarm notifications and e-mail messages each time it is
updated to an alarm status. For more information on this, see Alarm
Notifier on page 8-1.
<CompareDataPoint> The compare data point for this Alarm Generator. The data point must be
referenced by the <UCPTpointName> assigned to it in the Data Server,
and must use the same format type as the input data point. The value of
this data point will be compared to the value of the input data point each
time either point is updated.
Use an NVC data point as the compare data point if you want your alarm
generator to generate alarms based on a constant value configured through
software, as opposed to a live value taken from the network.
7-8