The source of a system event is a function block (as with alarms). System events can originate from the same block types as alarms:
- Analog Input/Output/Value
- Binary Input/Output/Value
- Multistate Input/Output/Value
- BACnet Device Info Object (not in Desigo room automation)
Every block type capable of generating a system event has a clearly defined set of system event triggers.
Event-generating block types | Description |
|---|---|
Operating hours counter | The input, output and value objects of the Binary and Multistate types have an inbuilt operating hours counter. A system event is generated when the operating hours limit is exceeded or when the maintenance interval has expired. |
BACnet Device Info Object | The BACnet Device Info Object detects the causes of system events which apply to the automation station as a whole. The following causes are detected: - Change of operating state (start and stop the program) - Restart after a power-up - Primary server has found a new backup server on the network - Backup server has found the primary server |