Clear Alarm
- Updated2025-07-28
- 1 minute(s) read
Clears a set alarm instance on the server if the node does not detect a condition to trigger the alarm.
An alarm instance remains active until you acknowledge and clear it. Typically, the application that sets the alarm clears it when the condition(s) that triggered the alarm no longer exist.

Inputs/Outputs
configuration
Connection to the server.
alarm id
Unique identifier for a process or condition tracked by an alarm. The Build Alarm ID node concatenates the names of the system and top-level VI where the rule triggered with the alarm name into a path.
For example, an alarm id may look like <system>.<namespace>.<alarm name>.
condition
Description of what caused the transition.
For example, Greater than 90% CPU or Low disk space.
error in
Error conditions that occur before this node runs.
The node responds to this input according to standard error behavior.
Default value: No error
alarm instance
Cleared alarm instance, if an instance exists. If no instance exists, this output returns an empty class instance.
cleared?
Boolean that determines whether a set alarm instance exists. If no alarm instance exists, it returns False and alarm instance returns default data.
error out
Error information.
The node produces this output according to standard error behavior.