Code 15120: If a power failure occurs now, th e last data change d will be lost; index/buffer size = %1

Parameters: %1 = Index/buffer size Definitions: Notification alarm. The alarm has no negative impact on the current machining. One of the system-internal data buffers, in which the last changed, buffered data are stored, has overflowed because the current data change rate is too high. The alarm warns that a spontaneous power failure in this situation (mains fault, disconnect the system from the power supply) would cause a loss of the immediatel y previously changed buffered data (tool data, parts programs, R parameters, GUDs,...) If the system is operated in an environment in which a power failure cannot occur, then the output of this alarm can be prevented via machine data MD18232 $MN_MM_ACTFILESYS_LOG_FILE_MEM[ index ] = 0. For information, parameter %1 specifies the index of the machine data, and the buffer size set there. Reaction: Alarm display. Remedy: If the alarm is present only sporadically, it can simply be regarded as a notification. The regular control behavior is not affected. If one does not want to or cannot eliminate the cause, then the alarm can be suppressed by setting MD11415 $MN_SUPPRESS_ALARM_MASK_2; Bit3=1 ('H8'). If the alarm is permanently present, please info rm the authorized personnel/service department. The value of MD18232 $MN_MM_ACTFILESYS_LOG_FILE_MEM[ index ] will then have to be increased. Program Continuation: Alarm display showing cause of alarm disapp ears. No further operator action necessary.