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Heidenhain Controller
Program/G-code · Intermediate · 30-120 minutes
HEIDENHAIN 250-F33C - Check the "Evaluation of EnDat" dialog window
HEIDENHAIN alarm 250-F33C occurs when attempting to access the EnDat encoder evaluation dialog without first activating the reference point traversal mode. This is a procedural error where the TNC control requires the machine to be in the proper operating state before encoder diagnostics can be performed.
250-F33C
HEIDENHAIN 250-F33C - Check the "Evaluation of EnDat" dialog window
Check the "Evaluation of EnDat" dialog window
EnDat evaluation dialog requires the Traverse reference points dialog to be active, which it currently is not.
Root Cause Summary
HEIDENHAIN alarm 250-F33C occurs when attempting to access the EnDat encoder evaluation dialog without first activating the reference point traversal mode. This is a procedural error where the TNC control requires the machine to be in the proper operating state before encoder diagnostics can be performed.
Safety
- Refer to Heidenhain service manual
- Ensure qualified technician performs repairs
Causes and Fixes
- 1
Access Manual Operating Mode
Press the Manual Operation key and ensure you're in manual mode on the TNC control.
Check that no program is running and E-STOP is released
- 2
Activate Reference Point Dialog
Navigate to Setup > Machine > Reference Points or press the REF key to open the 'Traverse reference points' dialog window.
Ensure all axes are clear of obstructions before proceeding
- 3
Access EnDat Evaluation
With reference point dialog active, navigate to Setup > Encoder > EnDat Evaluation to open the encoder diagnostic window.
The EnDat evaluation option will now be accessible in the menu structure
Call a technician if:
- ·Parameter modifications required
- ·Persistent software conflicts after reset
- ·EnDat encoder hardware issues suspected
Prevention
- Always activate reference point dialog before accessing encoder diagnostics
- Follow proper operating mode sequence
- Maintain current parameter backup files
Common Mistakes
- Attempting encoder evaluation from wrong operating mode
- Not clearing existing dialog conflicts
- Skipping reference point dialog activation step
Related Alarms
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