What causes Siemens SINUMERIK alarm 100143?

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 100143?

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 100143 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 100143

Siemens 840D 100143 - Error on reading the file!

SIEMENS alarm 100143 'Error on reading the file!' occurs when the SINUMERIK control cannot access or properly read configuration files, typically during system startup or parameter loading. This servo-category alarm indicates file system corruption, incorrect file permissions, or hardware issues with the CF card or hard drive.

Siemens SINUMERIKProgram/G-codeIntermediate30-120 minutes

100143

Siemens 840D 100143 - Error on reading the file!

Error on reading the file!

Root Cause Summary

SIEMENS alarm 100143 'Error on reading the file!' occurs when the SINUMERIK control cannot access or properly read configuration files, typically during system startup or parameter loading. This servo-category alarm indicates file system corruption, incorrect file permissions, or hardware issues with the CF card or hard drive.

Safety

Refer to Siemens documentation
Ensure qualified technician performs repairs

Causes and Fixes

1
Check CF Card Status
Navigate to HMI → Diagnostics → Hardware → Storage and verify CF card health status and available space.
Look for error counters or bad sector reports in the storage diagnostics
2
Perform File System Check
Access Service Mode and run CHKDSK utility on the CF card to identify and repair file system errors.
Always backup critical data before running file system repairs
3
Replace CF Card if Necessary
If corruption persists, replace the CF card and restore from backup using Siemens backup/restore utility.
Use only Siemens-approved CF cards to ensure compatibility

DIY Feasiblehigh confidence

Call a technician if:

·CF card replacement required
·Hardware communication failures persist
·Multiple servo drives showing errors

Prevention

Regular backup of machine data and parameters
Monitor CF card health status monthly
Maintain stable network connections for networked file access
Use UPS to prevent file corruption during power outages

Common Mistakes

Ignoring CF card health warnings
Not maintaining current backups
Modifying file permissions without understanding impact
Attempting file repairs without proper backups

Related Alarms

100142 380001 300500 61000

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