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Heidenhain Controller
Servo/Axis · Intermediate · 30-120 minutes
HEIDENHAIN 250-13C3 - Check the "Evaluation of EnDat" dialog window
HEIDENHAIN alarm 250-13C3 occurs when the EnDat encoder evaluation dialog cannot be displayed due to an active background operating mode blocking the interface. This typically happens when attempting to access encoder diagnostics while the control is in automatic mode or during active program execution.
250-13C3
HEIDENHAIN 250-13C3 - Check the "Evaluation of EnDat" dialog window
Check the "Evaluation of EnDat" dialog window
The EnDat encoder evaluation dialog is blocked by a background operating mode that has overlay priority.
Root Cause Summary
HEIDENHAIN alarm 250-13C3 occurs when the EnDat encoder evaluation dialog cannot be displayed due to an active background operating mode blocking the interface. This typically happens when attempting to access encoder diagnostics while the control is in automatic mode or during active program execution.
Safety
- Refer to Heidenhain service manual
- Ensure qualified technician performs repairs
Causes and Fixes
- 1
Check current operating mode
Look at the operating mode keys on the control panel. Verify if PROGRAM RUN FULL SEQUENCE or PROGRAM RUN SINGLE BLOCK is active (LED illuminated).
- 2
Switch to Manual mode
Press the MANUAL OPERATION key to switch from automatic mode. Wait for the mode change confirmation on the screen.
Ensure machine motion has completely stopped before changing operating modes.
- 3
Access EnDat evaluation
Navigate to MOD function → Diagnosis → Encoder → EnDat Evaluation to open the dialog window.
The EnDat evaluation dialog is only accessible in Manual, Electronic Handwheel, or MDI operating modes.
Call a technician if:
- ·EnDat dialog still inaccessible after trying all operating mode changes
- ·Persistent system interface blocking issues
- ·Suspected encoder hardware failure requiring replacement
Prevention
- Always access encoder diagnostics from Manual operating mode
- Clear all alarms before attempting diagnostic procedures
- Ensure proper user access level before starting encoder evaluation
Common Mistakes
- Attempting to access EnDat evaluation while in automatic mode
- Not clearing background program execution state
- Ignoring pending alarm messages that block interface access
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Always verify with your machine manual or a certified technician before performing service procedures.