What causes Siemens SINUMERIK alarm 104100?

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 104100?

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 104100 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 104100

Siemens 840D 104100 - PA: Error on opening the menu

Alarm 104100 indicates a problem accessing or opening the parameter menu (PA) in the Siemens 840D control system. This typically occurs due to corrupted menu configuration files, insufficient access rights, or damaged system data that prevents the HMI from properly displaying the parameter interface.

Siemens SINUMERIKProgram/G-codeIntermediate30-120 minutes

104100

Siemens 840D 104100 - PA: Error on opening the menu

PA: Error on opening the menu

Root Cause Summary

Alarm 104100 indicates a problem accessing or opening the parameter menu (PA) in the Siemens 840D control system. This typically occurs due to corrupted menu configuration files, insufficient access rights, or damaged system data that prevents the HMI from properly displaying the parameter interface.

Safety

Refer to Siemens documentation
Ensure qualified technician performs repairs

Causes and Fixes

1
Check the PCU hard drive or CF card for sufficient free space (minimum 100MB recommended). Navigate to HMI/System/Diagnostics to verify storage capacity.
2
Boot to service mode (press recall key during startup) and verify integrity of menu files in directories /user/sinumerik/hmi/cfg and /oem/sinumerik/hmi directories.
Document current file structure before making changes
3
Perform a data backup, then restore menu configuration from a known-good backup or reload default menu files using the 'System Data' restore function from commissioning archives.
This will overwrite current menu customizations
4
If no backup exists, re-generate menu configuration using 'HMI Advanced > Data Backup/Restore > Create default archive' then perform a control restart with NCK reset (Mode 4).
Mode 4 restart clears all alarm history

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Always verify with your machine manual or a certified technician before performing service procedures.