Rockwell-automation FactoryTalk View Site Edition Users Guide Manual de usuario Pagina 279

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12 SETTING UP FACTORYTALK ALARMS
12–23
• • • • •
12 • Placeholder
Setting up FactoryTalk tag-based alarms
Set up tag-based alarms to include the following in an integrated FactoryTalk Alarms and
Events system:
Older Devices (Plc-5 Or Slc 500) That Don’t Support Built-in Alarm Detection
Third-party devices communicating through OPC data servers
HMI tags in an HMI servers tag database.
In the Alarm and Event Setup editor, you can create and modify three types of alarms:
Digital alarms
are either on or off. A digital alarm is triggered when the tag being
monitored has a value of 1, or a value of 0.
Level alarms
obtain data from analog tags. A level alarm is triggered when the value
of the tag being monitored crosses predefined limits. A single tag can generate several
alarms of different severities, at various limits (also called thresholds).
Deviation alarms
compare the value of an input tag to the value of a target for a
deviation value. A deviation alarm is triggered when the target differs from the input
tag by greater or less than the deviation value.
To open the Alarm and Event Setup editor
1. In FactoryTalk View Studio, in the Explorer window, expand the Tag Alarm and Event
Server you want to set up alarms for.
2. Double-click Alarm and Event Setup, or right-click the icon, and select Open.
Creating tag-based digital alarms
In the Digital tab of the Alarm and Event Setup editor, you can view all the digital alarms
set up for this Tag Alarm and Event Server, create a new digital alarm, modify or delete an
existing digital alarm, and refresh the list of digital alarms.
To create a new digital alarm
1. In the Alarm and Events Setup editor, click the Digital tab, and then click New on the
editors toolbar.
If you prefer not to set up built-in alarm detection, you can also set up tag-based alarms for
Logix5000 controllers that do support device-based alarms.
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