Conversion options

The Alarm Migration Tool uses the following default options during conversion:
Alarm identify command
The commands are converted to FactoryTalk View commands as as-is. Make sure to update the commands if the reference HMI tags do not exist in your new application.
Scale alarm severity
The tool scales existing HMI alarms level severities to Alarms and Events level severities as below:
  • HMI alarms level 1 = A&E level 800
  • HMI alarms level 2 = A&E level 700
  • ...
  • HMI alarms level 8 = A&E level 100
Analog thresholds
You can assign up to eight thresholds to HMI alarms, and you can only assign four thresholds to A&E alarms. During the conversion:
  • The first two highest INCREASING thresholds are converted to HH and H, and the other INCREASING thresholds are ignored. If there is only one INCREASING threshold, it is H.
  • The first two lowest DECREASING thresholds are converted to LL and L, and the other DECREASING thresholds of are ignored. If there is only one DECREASING threshold, it is L.
Alarm label
The HMI tag alarm label is used as the Alarms and Events alarm class. Analog HMI alarms contain an alarm label for each threshold. The tool assigns the alarm label from the HH threshold, if present, to the alarm class.
Alarm messages
Alarm messages are assigned an index number and the number is paired with an alarm definition. By default, it does not optimize string text and each alarm message gets its own index number. The default entry is 1.
HMI Tag description is converted to Alarms and Events message for all levels. If the description does not exist, the converted message is like
General Alarm Message @HH
.
Tag update rate
The default rate is 2.0 seconds.
Digital alarm type
The tool converts HMI alarm type to tag-based Alarms and Events conditions, that is,
Off
or
Changes to Off
 to
=0
 and the others to
<>0
.
Analog deadbands
All deadband values are absolute values.
Acknowledge bit
The tool substitutes the device address for all HMI tags and converts to tag-based Alarms and Events Acknowledge Tag in the Status Tags tab for all levels.
Handshake bit
The toll substitutes the device address for all HMI tags and converts to tag-based Alarms and Events In Alarm Tag in Status Tags Tab for all levels.
Language for messages
The default language is en-US.
TIP:
The following items are not migrated because they do not exist in the tag-based Alarms & Events format:
  • Handshake Auto Reset
  • Acknowledge Auto Reset
  • Alarm Message
    Including In Alarm Messages, Out of Alarm Messages, and Acknowledge Messages
  • Out of Alarm Label
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