What causes Siemens SINUMERIK alarm 108001?

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 108001?

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 108001 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.

Siemens SINUMERIK codes

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Siemens SINUMERIK Controller

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

Alarm 108001

Siemens 840D 108001 - No entry in diagnostics file

This alarm indicates a missing or inaccessible diagnostics file entry for an error, often due to a program syntax issue or unsupported function. SAFETY: Ensure machine is in a safe state and E-stop is accessible before making program changes. Correct the program or verify control options to resolve it.

Siemens SINUMERIKProgram/G-codeIntermediate30-120 minutes

108001

Siemens 840D 108001 - No entry in diagnostics file

No entry in diagnostics file

Siemens SINUMERIK alarm 108001: No entry in diagnostics file. This alarm indicates a required configuration element, parameter, or program component is missing or has not been set up.

Root Cause Summary

Safety

Refer to Siemens documentation
Ensure qualified technician performs repairs

Causes and Fixes

1
Safety first - Stop machine
SAFETY: Press E-stop, ensure machine is in safe state, and verify no tools are in motion before proceeding.
2
Locate error block
Check the alarm message for the line or block number and open the program to review it.
3
Fix syntax
Correct the invalid G-code, parameter, or syntax error in the identified block.
4
Test and restart
SAFETY: Ensure work area is clear, verify proper tool/workpiece setup, then clear the alarm and run the program in single block mode initially to confirm the fix.

DIY Feasiblehigh confidence

Call a technician if:

·If the alarm persists after program correction
·If the required option cannot be enabled without assistance

Prevention

Always validate programs using simulation before execution
Confirm G-code compatibility with control documentation
Maintain proper lockout/tagout procedures during program modifications
Keep backup copies of verified programs

Common Mistakes

Overlooking the specific block number in the alarm
Assuming hardware fault instead of program error

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