Configuring The Alarm Log - Siemens SINUMERIK 828D Commissioning Manual

3.6.3

Configuring the alarm log

Logging
Configure the alarm log in the "Diagnostics" operating area.
All alarms and messages are logged in chronological order with their raised and cleared time
stamps. The exception are messages of the type "msg" from the NC part program. All alarms
and messages that are no longer active when the log is displayed are also retained
(historical alarm events).
The alarm log is organized as a ring buffer (default setting). The oldest entries are
overwritten with new events in the following cases:
● When the maximum size is exceeded (permissible range: 0 - 32000).
● When the events happened before the last time the system was switched on.
Permanent backup
To save the alarm log permanently, the alarm log is written to the CompactFlash card.
NOTICE
Saving the alarm log
For permanent storage, the alarm log is written to the CompactFlash card which only allows
a limited number of write cycles.
• Therefore, ensure that the backup is only performed when there is a justifiable need!
• Make sure you undo the setting "on every event" if you no longer require storage of the
Default setting: The alarm log is not backed up.
Filtering alarms
Set up a filter to limit the number of events in the alarm log. Select the range for the following
filters:
● Time interval
● Alarm number range
Turning and Milling
Commissioning Manual, 02/2012, 6FC5397-3DP40-3BA0
alarm log.
Operating software settings
3.6 Configuring PLC user alarms
59