What causes Siemens SINUMERIK alarm 104118?

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 104118?

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 104118 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 104118

Siemens 840D 104118 - PA: Error on reading JOG feed

Alarm 104118 indicates the control system cannot properly read or interpret the JOG feed rate parameters during manual jogging operations. This typically occurs due to corrupted or invalid JOG-related machine data (MD), incorrect parameter settings in the initialization files, or problems with the control's axis configuration that prevent proper feed rate calculation.

Siemens SINUMERIKProgram/G-codeIntermediate30-120 minutes

104118

Siemens 840D 104118 - PA: Error on reading JOG feed

PA: Error on reading JOG feed

Root Cause Summary

Alarm 104118 indicates the control system cannot properly read or interpret the JOG feed rate parameters during manual jogging operations. This typically occurs due to corrupted or invalid JOG-related machine data (MD), incorrect parameter settings in the initialization files, or problems with the control's axis configuration that prevent proper feed rate calculation.

Safety

Refer to Siemens documentation
Ensure qualified technician performs repairs

Causes and Fixes

1
Access Service Mode and navigate to Settings > Machine Data. Check JOG-related MDs: MD11700-11730 (JOG increment data) and MD14000-14020 (JOG feedrate data) for all active axes.
2
Verify JOG feedrate values are within valid range (typically 0.001 to maximum axis velocity). Check MD14001 $MN_JOG_VELO_RAPID and MD14002 $MN_JOG_VELO for reasonable values.
3
If values are corrupted or show as zero/invalid, restore default JOG machine data from a known good backup or reload from commissioning files.
Ensure you have a complete backup before modifying machine data.
4
Perform a POWER ON reset (Warm Start) to reinitialize the control with corrected machine data. Test JOG operation on each axis.

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