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1 alarm priority levels, 2 comparison functions – Echelon i.LON SmartServer 2.0 User Manual

Page 87

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i.LON SmartServer 2.0 Programmer’s Reference

6-9

Property Description

e-mail messages each time they are updated to an alarm
status. For more information on this, see Alarm Notifier.

6.3.2.1 Alarm Priority Levels

You can select a priority level for the Alarm Generator by filling in the
property. When doing so, you must reference each priority level with the identifier listed in the
following table. Each time an Alarm Generator generates an alarm, the priority_level field of the
alarm data points chosen for the Alarm Generator will be updates to the priority level chosen here.

Identifier Notes

PR_LEVEL_0

Lowest alarm priority level

PR_LEVEL_1

PR_LEVEL_2

PR_LEVEL_3

Highest alarm priority level

PR_1

Life Safety Fire Alarms

PR_2

Property Safety Fire Alarms

PR_3

Fire Supervisory Alarm

PR_4

Fire Trouble/Fault (Display)

PR_6

Fire Pre-Alarm, HVAC Critical Equipment Alarm

PR_8

HVAC Alarms (BACnet Priority 8)

PR_10

HVAC Critical Equipment RTN, Fire RTN (Display)

PR_16

HVAC RTN (lowest priority)

PR_NUL Value

not

available

6.3.2.2 Comparison Functions

The following tables describes the comparison functions an Alarm Generator can use when comparing
the values of the input and compare data points. You can select a comparison function for the Alarm
Generator by filling in the property. When doing so, you must reference each
comparison function with the identifier strings listed in the following table.

Identifier Description

FN_GT

Greater than. An alarm will be generated if the input value is greater than the
compare value.

FN_LT

Less than. An alarm will be generated if the input value is less than the
compare value.

FN_GE

Greater than or equal. An alarm will be generated if the input value is greater
than or equal to the compare value.

FN_LE

Less than or equal. An alarm will be generated if the input value is less than
or equal to the compare value.

FN_EQ

Equal. An alarm will be generated if the input value is equal to the compare
value.