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Siemens SINUMERIK Controller
Program/G-code · Intermediate · 30-120 minutes
Siemens 840D 101205 - Drive data changed? -> Don't forget to save bootfiles!
This is an informational reminder alarm, not a fault condition. It triggers when drive-related parameters have been modified in the system and warns the operator that these changes need to be saved to the bootfiles to persist after a power cycle or system restart.
Siemens 840D 101205 - Drive data changed? -> Don't forget to save bootfiles!
Drive data changed? -> Don't forget to save bootfiles!
Siemens SINUMERIK message 101205: Drive data changed? -> Don't forget to save bootfiles!. This is an operator information message from the SINUMERIK control. Note the complete message text as it may contain important parameter values.
Root Cause Summary
This is an informational reminder alarm, not a fault condition. It triggers when drive-related parameters have been modified in the system and warns the operator that these changes need to be saved to the bootfiles to persist after a power cycle or system restart.
Safety
Causes and Fixes
Access the HMI Commissioning mode or use the 'Services' menu to navigate to the data backup functions.
Select 'Save machine data to bootfiles' or similar option (location varies by HMI version - typically under Services > Data > Save).
Ensure no machining operations are running before saving bootfiles.
Execute the bootfile save operation and wait for confirmation that all drive and system data has been written to CF card or internal storage.
Perform a controlled power cycle to verify that all drive parameters persist correctly after reboot, then clear the alarm.
Coordinate power cycle with production schedule as this requires machine downtime.
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