Alarm acknowledgment, Alarm acknowledgment – 10 – Rockwell Automation FactoryTalk View Site Edition Users Guide User Manual
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Alarm system tags
System tags that provide HMI tag alarm status information are created and updated on the
HMI server. You can use these system tags wherever you can specify a tag name in
FactoryTalk View SE.
Alarm acknowledgment
An operator can acknowledge HMI tag alarms shown in an alarm summary or some other
HMI tag alarm display. Acknowledging an alarm does not correct the condition causing
the alarm, but indicates that the operator is aware of the alarm.
A tag, not an alarm, is acknowledged: a single tag might cause several alarms.
For example, a tag representing temperature might trigger Warm, Hot, and Overheat
alarms by the time it is acknowledged. The tag could also go in and out of alarm several
times before being acknowledged.
To display this alarm status information
Use this system tag
Of type
The most recent, most severe alarm. If an alarm of an equal
or higher severity occurs, it replaces the first alarm, whether
or not the previous alarm has been acknowledged.
system\AlarmBanner
String
The date of the most recent, most severe alarm.
system\AlarmMostRecentDate
String
The threshold label of the tag of the most recent, most
severe alarm.
system\AlarmMostRecentLabel
String
The severity of the most recent, most severe alarm.
system\AlarmMostRecentSeverity
Analog
The description of the tag of the most recent, most severe
alarm.
system\AlarmMostRecentTagDesc
String
The name of the tag of the most recent, most severe alarm.
system\AlarmMostRecentTagname
String
The time of the most recent, most severe alarm.
system\AlarmMostRecentTime
String
The units of the most recent, most severe alarm.
system\AlarmMostRecentUnits
String
The number of unacknowledged and suppressed alarms.
system\AlarmStatus
String
The number of alarm transactions in an unfiltered alarm
summary.
system\AlarmSummaryItems
Analog
The number of unacknowledged alarms in an unfiltered
alarm summary.
system\AlarmSummaryItemsUnacked
Analog
The number of tags with alarms suppressed.
system\AlarmSuppressedCount
Analog