Thanks!

Hi,

The System Alarm with ID "536870921" in Unified Panels means that the connection to the Service Manager has been lost:

I believe this can occur if:

=> a not suitable USB device on X61/X62 is used for the Tag Logging or Alarm Logging database.

=> behavior is also triggered when you use a SD Card and the card is write-protected.

Hi,

Thank you for your response, but I believe there may have been a misunderstanding of my question.

My main concern isn't the specific cause or details of the system alarm with ID "536870921." Instead, I'm trying to find a way to detectanyalarm triggered on the HMI—including system events like the one mentioned—and use the PLC to activate a common alarm signal to the IO cards whenever there's an active or unacknowledged alarm.

While I've managed to handle program alarms by monitoring theackStatustag and the states of the BOOL variables, I'm unsure how to include system events in this process. System events don't seem to be linked to tags or variables that the PLC can directly access.

Could you help me understand how to capture these system events within the PLC so that they can also trigger the common alarm output?

Thank you!