代码 15120: If a power failure occurs now, th e last data change d will be lost; index/buffer size = %1
问题描述与安全警告
Siemens SINUMERIK 840D CNC 触发了严重的 If a power failure occurs now, th e last data change d will be lost; index/buffer size = %1 警报。需要由合格的操作员或维修技师立即处理,以防止在制造周期中对设备造成二次损坏或导致零件报废。在接触电气控制箱之前,请务必确保遵循标准安全和停机挂牌 (LOTO) 程序。
官方故障排除步骤
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.
Source: SINUMERIK 840D sl / 840Di sl / SINAMICS S120 Diagnostics Manual (DAsl, 03/2009)
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
关于 Siemens SINUMERIK 840D CNC 警报
由 Siemens 制造的工业控制器具有广泛的诊断系统,用于保护内部电路和机械连杆。当 SINUMERIK 840D CNC 出现类似 15120 的错误代码时,通常表示指令值与实际传感器反馈之间存在不匹配。
完整报警清单: 4014 Siemens SINUMERIK 840D CNC 代码s.
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