What causes Siemens SINUMERIK alarm 104023?

Normal control operation generated this status message. User action or program command triggered this notification. System configuration or commissioning activity produced this message. Machine data or parameter change created this notification.

How do I fix Siemens SINUMERIK alarm 104023?

1. Read the complete message text on the SINUMERIK screen — note any parameter values shown. 2. If action is required, follow the instructions in the message. 3. Acknowledge the message on the operator panel to continue operation. 4. Consult the Siemens SINUMERIK alarm documentation for message 104023 if clarification is needed. 5. If this message appears unexpectedly, review recent parameter or configuration changes.

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Siemens SINUMERIK Controller

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

Alarm 104023

Siemens 840D 104023 - Error in Tool Load

Alarm 104023 indicates an error occurred during tool data loading or transfer operations on the SINUMERIK 840D control. This typically happens when the control attempts to load tool offset data, tool management information, or tooling parameters from memory or an external source and encounters corrupted data, incorrect formatting, or communication failures.

Siemens SINUMERIKProgram/G-codeIntermediate30-120 minutes

104023

Siemens 840D 104023 - Error in Tool Load

Error in Tool Load

Root Cause Summary

Alarm 104023 indicates an error occurred during tool data loading or transfer operations on the SINUMERIK 840D control. This typically happens when the control attempts to load tool offset data, tool management information, or tooling parameters from memory or an external source and encounters corrupted data, incorrect formatting, or communication failures.

Safety

Refer to Siemens documentation
Ensure qualified technician performs repairs

Causes and Fixes

1
Access the HMI and navigate to Commissioning > Tool Data > Tool List to check if tool data displays correctly or shows error indicators.
2
Review the complete alarm text in the alarm log (Diagnostics > Alarms) for specific parameter values indicating which tool number or data block failed.
3
Create a backup of current tool data, then attempt to reload tool offset data from a known good archive file (if available) via Archive/Retrieve function.
Ensure you have backed up current data before restoring, as this will overwrite existing tool tables.
4
If no backup exists, check tool data consistency using Service > Tool Management menu, delete suspect tool entries, and manually re-enter critical tool offset data.

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