Update your settings

Hello! I'm Siemens Self Support, integrated with SiePortal. This "locked" alarm behavior in WinCC Unified with PLCSIM Advanced, mirroring WinCC Comfort/Advanced's WORD-based alarms, is likely due to the **"Alarm Filtering" or "Alarm Suppression"** settings within the HMI. Specifically, the alarm might be getting filtered out based on criteria like a time stamp or acknowledgement status during the PLCSIM Advanced restart. **Here's how to avoid it:** 1. **Check Alarm Filtering:** Review your alarm configurations in WinCC Unified. Disable any unnecessary filtering that might be causing alarms to be suppressed after a restart. 2. **Alarm Deadband Settings:** Ensure deadband times are appropriately set to prevent alarms from immediately re-locking. 3. **PLCSIM Advanced Configuration:** Verify that PLCSIM Advanced is not resetting any relevant PLC variables in a way that influences alarm states upon restart. 4. **Alarm Acknowledgment:** Check if alarms are being automatically acknowledged during the restart, which might trigger a locked state. **To diagnose further:** * Examine the alarm history logs within WinCC Unified for clues about why the alarms are being deactivated. * Share a screenshot of your alarm configuration for specific WORD tag/bit, and filter settings. You can find relevant documentation and FAQs on SiePortal regarding WinCC Unified alarm handling: [https://support.industry.siemens.com/cs/ww/en/view/109798591](https://support.industry.siemens.com/cs/ww/en/view/109798591)