User Manual

Table Of Contents
Automation stations
Error sources and monitoring functions
18
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Properties for system alarms and system events
The device object has an alarm mechanism, because system alarms and system events, which cannot be
assigned to a data point, may occur in an automation station. The alarm state machine and alarm-relevant
connections are mapped to the BACnet properties of the device object.
18.3 Error sources and monitoring functions
There are various error sources, e.g.:
Error Effect
Memory error, e.g., faulty flash memory Desigo PX stops working.
Battery failure Desigo PX continues working.
Failure of backup server recognized by primary server Desigo PX recognizes the fault and transmits the relevant alarm.
Non-critical errors / configuration errors
Non-critical hardware and software errors are identified by Desigo PX and registered as a device object
alarm.
Critical errors