Echelon SmartServer 2.2 - Manual (Page 336)

SmartServer 2.2 User’s Guide 337
2. Select one of the following binary comparison functions: equals (==), is not equal to (=/=), greater
than (>), greater than or equal to (>=), less than (<), and less than or equal to (<=). When the
selected comparison function is evaluated to be true, the Alarm Generator triggers an alarm and
updates the status of the input point to AL_ALM_CONDITION. For example, if you select the
equals comparison function (==), the Alarm Generator triggers an alarm when it determines that
the value of the input point is equal to the value of the compare point.
3. Configure the following alarm properties:
Warning/Alarm Set
Delay Enter the period of time (in seconds) that the alarm condition must exist to
generate an alarm.
Warning/Alarm
Clear Delay Enter the period of time (in seconds) that the normal condition must exist to
clear an alarm.
Poll Rate Enter how frequently (in seconds) the Alarm Generator polls the
SmartServer’s internal data server for the values of the selected input point
and the compare point (if a data point). You must enter a non-zero value;
otherwise polling is disabled.
Poll Delay After
Power On Enter the period of time (in seconds) that the Alarm Generator waits after it
has been reset before polling the input point and the compare point (if a data
point).
Alarm Inhibit Time
After Power On Enter the period of time (in seconds) that the Alarm Generator waits after it
has been reset before triggering alarms.
Using an Analog Comparison Function
To use an analog function for comparing the input point to the compare point, follow these steps:
1. In the Alarm box, click Analog, and then click the Analog icon. The Configure: Analog Web
page opens.
2. Enable and set offset limits used to trigger the following alarms: