Alarm Management
The Alarms page gives you a live view of your PLC’s alarm state without needing TIA Portal or an HMI panel — useful during commissioning, maintenance visits, or remote diagnosis.
Alarm table
Section titled “Alarm table”The alarm table shows all alarms currently known to the PLC. Each row contains:
| Column | Description |
|---|---|
| Timestamp | When the alarm was raised (PLC clock) |
| State | Active, acknowledged, or cleared |
| Message | Alarm text as configured in TIA Portal |
| CPU / Area | The CPU or hardware area that raised the alarm |
| Alarm number | Unique alarm identifier |
Alarms are colour-coded by state:
- Red — active and unacknowledged
- Yellow — active but acknowledged
- Grey — cleared (no longer active)
Acknowledging alarms
Section titled “Acknowledging alarms”Acknowledge individually
Section titled “Acknowledge individually”Click the Acknowledge button on any individual alarm row. The alarm transitions from red to yellow immediately if it is still active, or disappears if it was already cleared.
Acknowledge all
Section titled “Acknowledge all”Click Acknowledge All (top-right of the table) to acknowledge every acknowledgeable alarm in one action. Use this with care — it acknowledges all alarms, including those you may not have investigated yet.
Refreshing
Section titled “Refreshing”The alarm list refreshes automatically with each 5-second dashboard poll. You can also click Refresh manually at any time.
Using the AI Agent with alarms
Section titled “Using the AI Agent with alarms”The AI Agent can read the alarm list via its browse_alarms tool. Ask questions like:
“Are there any active alarms on the PLC right now?” “Which alarms have been active for more than 10 minutes?” “Explain what alarm number 16#0801 means.”
See AI Agent Tools Reference for details.