-
Value,
value status (good, bad, OPC uncertain, PI questionable),
timestamp-age, value flat-line,
value change, trend up, and trend down
alarm conditions
-
Monitor the state of a group of alarms
as a new alarm event
-
Monitor total number of new alarms for
time period as an alarm event (detect flooding and alarm frequency
events)
-
Optional delay of
alarm unless condition is TRUE for a period of time
-
Optional delay of return to normal
unless alarm condition is FALSE for a period of time
-
Optional expire of
alarm after a period of time
-
Optional alarm limit dead bands for
alarm hysteresis
-
Optional alarm limit blackout period
to filter frequent alarms
-
Alarm and point priorities
-
Complex alarm
conditions involving multiple tags/points and conditions
-
Flexible alarm limit
scheduling (days-per-week and times-per-day)
-
Custom alarm and
return to normal messages with placeholders for point values, timestamps,
time of alarm, ...
-
Fixed and dynamic
limits (use other tag/point values as limits)
-
Storage of user comments to document each set
of alarm limits
-
Ability to
temporarily set alarm conditions inactive
-
Ability to suppress alarm detection if
associated equipment not running (state-based alarming)
-
Output points (write
to tags) upon alarm, return-to-normal, and alarm acknowledgement
events
-
Configurable
blackout periods for startup alarms
-
Ability to automate
configuration
changes to tags, alarm conditions, and alarm limits through scripts
or custom code
