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Siemens SINUMERIK Controller
Program/G-code · Intermediate · 30-120 minutes
Siemens 840D 104026 - NOTICE! Tool Load running!
Alarm 104026 is an informational message indicating that a tool data loading process is currently active on the SINUMERIK 840D control. This appears during tool management operations when the system is reading or writing tool offset data, tool lists, or magazine configurations from/to the control memory or network locations.
Siemens 840D 104026 - NOTICE! Tool Load running!
NOTICE! Tool Load running!
Siemens SINUMERIK message 104026: NOTICE! Tool Load running!. This is an operator information message from the SINUMERIK control. Note the complete message text as it may contain important parameter values.
Root Cause Summary
Alarm 104026 is an informational message indicating that a tool data loading process is currently active on the SINUMERIK 840D control. This appears during tool management operations when the system is reading or writing tool offset data, tool lists, or magazine configurations from/to the control memory or network locations.
Safety
Causes and Fixes
Wait for the tool load operation to complete. Monitor the control display for completion message or progress indicator.
Do not interrupt power or attempt to start machining operations until the message clears automatically.
Interrupting tool data loading can corrupt the tool offset table and cause machining errors.
If the message persists beyond 2-3 minutes, check the HMI for additional error messages or file transfer status indicators.
Verify tool data file integrity if loading from external media. Check file size and format match SINUMERIK specifications (typically .TOA, .TMA files).
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