Issue
How many alarms can be stored in a standalone programmable Xenta device?
What happens to alarms when no TAC Vista system is connected?
Product Line
TAC VistaEnvironment
- TAC Xenta 301
- TAC Xenta 302
- TAC Xenta 401
- TAC Xenta 281
- TAC Xenta 282
- TAC Xenta 283
Cause
Standalone Xenta controllers have a limited internal memory capacity for storing alarms. Once this limit is reached, older alarms are overwritten.
Resolution
- A standalone TAC Xenta controller can store up to 20 alarms.
- When the 21st alarm is generated, the controller uses a First-In, First-Out (FIFO) method:
- The oldest alarm is automatically overwritten to make space for the new one.
- This behavior ensures that the most recent alarms are retained, but historical alarm data may be lost if not retrieved before being overwritten.
