What causes Siemens SINUMERIK alarm 102002?

Part program contains an illegal or unsupported command for the current machine configuration. Parameter or machine data setting incompatible with the commanded operation. Required option or function not enabled on this SINUMERIK control. Incorrect axis assignment or configuration for the commanded function. Software version or compile cycle version mismatch.

How do I fix Siemens SINUMERIK alarm 102002?

1. Note the full alarm message including any parameter values shown (e.g., axis number, block number, channel). 2. Identify the program block or operation that triggered the alarm. 3. Review the SINUMERIK alarm manual for alarm 102002 to identify the specific cause and remedy. 4. Check the relevant machine data parameters referenced in the alarm. 5. If the alarm persists after correcting the program, contact Siemens technical support with the full alarm text and machine data backup.

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Siemens SINUMERIK Controller

Program/G-code · Intermediate · 30-120 minutes

Alarm 102002

Siemens 840D 102002 - Write error on disk

Alarm 102002 indicates the SINUMERIK control cannot write data to the hard disk or CompactFlash storage media. This typically occurs due to disk full conditions, write-protected media, file system corruption, or physical storage device failure preventing the system from saving NC programs, parameters, or system files.

Siemens SINUMERIKProgram/G-codeIntermediate30-120 minutes

102002

Siemens 840D 102002 - Write error on disk

Write error on disk

Root Cause Summary

Alarm 102002 indicates the SINUMERIK control cannot write data to the hard disk or CompactFlash storage media. This typically occurs due to disk full conditions, write-protected media, file system corruption, or physical storage device failure preventing the system from saving NC programs, parameters, or system files.

Safety

Refer to Siemens documentation
Ensure qualified technician performs repairs

Causes and Fixes

1
Check available disk space via HMI: Service > System Data > Hard Disk. Review capacity and free space percentage.
2
Delete obsolete NC programs from Program Manager (/_N_WKS_DIR or user directories) or remove old archive files from /_N_ARC_DIR.
Always backup critical NC programs to external media before deletion
3
Clear system log files if storage is critical: Navigate to /_N_LOG_DIR and archive/delete old alarm and trace logs.
Document current alarms before clearing logs for service history
4
Perform system archive to external USB/network location, then remove archive from internal storage to free space.

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