Siemens SINUMERIK 840Di Diagnostic Manual page 266

Overview of Alarms
NCK alarms
15120 If a power failure occurs now, data changed before will be lost; buffer
size = %1
Parameters: %1 = Buffer size
Definitions: Notification alarm. The alarm has no negative impact on the current machining.
The system-internal data buffer in which the last buffered data are stored that were changed,
has overflown (as the data change rate is currently too high).
The alarm warns of a spontaneous power failure in this situation
(mains fault, disconnect the system from the power supply) that would cause a loss of
buffered data changed beforehand (tool data, parts programs,
R parameters, GUDs,...
If the system is operated in an environment in which a power failure cannot occur, output of
this alarm can be avoided via machine date $MN_MM_ACTFILESYS_LOG_FILE_MEM = 0.
Parameter %1 informs about the buffer size set.
Reaction: Alarm display.
Remedy: If the alarm is only present sporadically, it can be regarded as a notification only.
The regular control behavior is not influenced.
If the alarm is permanently present, please inform the authorized personnel/service.
Program Alarm display showing cause of alarm disappears. No further operator action necessary.
Continuation:
15122 Power ON after power failure: %1 data were restored, of which %2
machine data, %3 errors.
Parameters: %1 = Number of data
%2 = Number of machine data
%3 = Number of errors occurred
Definitions: Notification alarm. The alarm has no negative effect as long as %3 the number of errors occurred is
zero.
%1 indicates the number of elementary and complex data restoring steps which were taken after a
power OFF during power ON orduring a power failure to restore the persistent NCK data.
%2 indicates the number of restored machine data. If the value is larger than zero, another warm
restart (NCK reset) may be necessary to make the - possibly configuring - machine data changes prior
to the power failure effective.
%3 indicates the number of errors occurred during data restoring.
Reaction: Alarm display.
Remedy: As long as %3 number of errors occurred is zero, the alarm is only informative.
As long as %3 number of errors is larger than zero, the alarm indicates a software error.
Continuing with the data is not recommended.
Please install a suitable archive file before continuing to avoid follow-up problems.
Please inform authorized personnel/service.
Program Clear alarm with the RESET key. Restart part program
Continuation:
2-266
© Siemens AG, 2006. All rights reserved
SINUMERIK, SIMODRIVE Diagnostics Manual (DA), 11/2006 Edition
11/2006