What action is commonly used to clear an alarm once the cause has been addressed?

• A. Ignore the alarm and resume operation.
• B. Power cycle the controller.
• C. Acknowledge or reset the alarm in the Alarm screen to clear the fault once the condition is resolved.
• D. Delete the alarm from logs.

Answer: (C)

When an alarm occurs, it latches a fault and alerts you to the issue. After you’ve fixed the cause, you clear that fault by acknowledging or resetting the alarm in the Alarm screen. This action marks the alarm as seen and releases the fault latch, allowing the controller to return to normal operation. It’s the standard, safe way to resume work without losing the fault history or masking problems. Power cycling, ignoring the alarm, or deleting it from logs doesn’t actually clear the fault—the first two leave the issue unresolved or hidden, and the last merely edits records without addressing the real condition.