What causes Siemens SINUMERIK alarm 101625?

Required machine data or parameter not configured for the requested function. Option bit not set in SINUMERIK to enable the required functionality. Program references a function or axis that has not been configured. Machine commissioning incomplete — required setup step was not performed. Configuration data cleared or lost due to a parameter reset or hardware change.

How do I fix Siemens SINUMERIK alarm 101625?

1. Read the full alarm message to identify what is missing (axis name, parameter number, function name). 2. Consult the SINUMERIK alarm manual for alarm 101625 for the specific configuration requirement. 3. Check the relevant machine data group and set the required parameter. 4. If a specific option is required, verify it is licensed and enabled in the SINUMERIK option settings. 5. Power cycle after making configuration changes to apply the new settings.

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Siemens SINUMERIK Controller

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

Alarm 101625

Siemens 840D 101625 - No write access with active controller.

Alarm 101625 occurs when attempting to write or modify data (NC program, parameters, or settings) while the CNC controller is in an active operational state. The system prevents write access during certain active modes to ensure data integrity and avoid corruption during program execution or active axis control.

Siemens SINUMERIKProgram/G-codeIntermediate30-120 minutes

101625

Siemens 840D 101625 - No write access with active controller.

No write access with active controller.

Root Cause Summary

Alarm 101625 occurs when attempting to write or modify data (NC program, parameters, or settings) while the CNC controller is in an active operational state. The system prevents write access during certain active modes to ensure data integrity and avoid corruption during program execution or active axis control.

Safety

Refer to Siemens documentation
Ensure qualified technician performs repairs

Causes and Fixes

1
Press the RESET button on the machine control panel to abort any active program execution or motion commands.
Ensure machine motion has completely stopped and no workpiece collision will occur.
2
Verify the operating mode is in a safe state - switch to single-block or program stop if in AUTO mode.
3
Wait for all axes to reach standstill and confirm no feed hold or cycle active indicators are displayed.
4
Retry the write operation (program save, parameter modification, or data transfer).

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