What causes Siemens SINUMERIK alarm 4062?

Machine data was changed requiring acknowledgment or power cycle. System configuration change notification. Commissioning or service operation generated this notice. Axis or drive configuration change affecting machine data.

How do I fix Siemens SINUMERIK alarm 4062?

1. Read the complete notice text on the SINUMERIK screen. 2. If a power cycle is indicated, perform a controlled machine power off and restart. 3. If machine data backup is indicated, save the current machine data. 4. Acknowledge the notice and verify the system is operating correctly after the change. 5. Consult the machine commissioning engineer if the notice is unexpected.

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Siemens SINUMERIK Controller

System · Intermediate · 30-120 minutes

Alarm 4062

Siemens 840D 4062 - Backup data loaded

Alarm 4062 is an informational message indicating that user data (machine parameters, tool offsets, zero offsets) previously stored in flash memory has been successfully loaded into SRAM during system startup or after a backup recovery event. This occurs when the NCK detects valid backup data in non-volatile storage and initiates the restoration sequence to working memory.

Siemens SINUMERIKSystemIntermediate30-120 minutes

4062

Siemens 840D 4062 - Backup data loaded

Backup data loaded

Root Cause Summary

Alarm 4062 is an informational message indicating that user data (machine parameters, tool offsets, zero offsets) previously stored in flash memory has been successfully loaded into SRAM during system startup or after a backup recovery event. This occurs when the NCK detects valid backup data in non-volatile storage and initiates the restoration sequence to working memory.

Safety

Refer to Siemens documentation
Ensure qualified technician performs repairs

Causes and Fixes

1
Verify backup enable status: Navigate to Diagnostics > Parameters > MD 18000 'Backup enable' and confirm it is set to 1 (enabled). Check MD 18010 'Backup mode' to confirm automatic restore is configured.
2
Monitor the system startup log via Diagnostics > System > Startup Messages to confirm backup restoration completed without errors. The alarm 4062 should appear once during initial NCK initialization.
3
Verify SRAM data integrity by checking active tool offsets (TOOL.T menu) and work offsets (WO.G menu) match expected values. If data appears corrupted, initiate a full backup restore from HMI: Service > Backup & Restore > Restore from Backup.
Do not interrupt restore process once initiated

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