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Modifying hmi tag alarm properties, Modifying hmi tag alarm properties – 26 – Rockwell Automation FactoryTalk View Site Edition Users Guide User Manual

Page 370

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Modifying HMI tag alarm properties

You can modify the properties of HMI tag alarms at run time. For the changes to take
effect, you must run the AlarmAcceptEdits command.

When AlarmAcceptEdits runs, all alarm property changes made since the last time
AlarmOn was run, are reflected in HMI tag alarm summaries on connected clients.

Initial Value

HMI analog tags with
Memory as data source

The tag’s Data Source Type is changed from Device to
Memory.

The Initial Value property is read using VBA code.

The Initial Value property is shown in the Tag Browser.

The HMI server is started.

Retentive

Any HMI tag with
Memory as data source

Immediately, if the tag is not in use. Otherwise, the
change takes effect when the HMI server is started.

Off Label or On Label

HMI digital tags

A graphic display using the Off Label or On Label
property, in a tag label object (Contact Close Label or
Contact Open Label) is opened in a FactoryTalk View
SE Client.

The Off Label or On Label property is read using VBA
code.

The Contact Close or Contact Open property is shown in
the Tag Browser.

Length

HMI string tags

Immediately. The Value property is updated to use the
new Length value as soon as the property is modified.

Or when:

An attempt is made to write to the tag, from a
FactoryTalk View SE Client, FactoryTalk View Studio,
or the HMI server.

The Length property is read using VBA code.

The Length property is shown in the Tag Browser.

If you change this property

For this type of HMI tag

The change takes effect when