Add an alarm to a library object

In a Logix system, digital alarms are configured using tags that are either on or off. The alarm configuration defines a trigger condition by comparing the value of the tag to the configured alarm state. An alarm can be triggered if the digital alarm is in one of these two states:
  • The input tag is equal to zero.
  • The input tag is not equal to zero.
Prerequisites
To add a digital alarm to a library object
  1. Right-click the
    Digital Alarms
     subfolder and select
    Add
    . The
    Tag Browser
     dialog box opens.
  2. In
    Select the Alarm Trigger Tag
    , type the tag name or part of the tag name to filter the tags listed. To choose a tag that is a member of an array, expand the tag group name to see all of the members of the array.
  3. Scroll in the list box and double-click the tag name that will trigger the digital alarm.
    The tag
    Data Type
     must be Boolean (
    BOOL
    ).
  4. Click
    OK
    . The tag is added as an object in the
    Digital Alarms
     folder.
  5. Configure the properties as needed.
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