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Heidenhain Controller
Parameter · Intermediate · 30-120 minutes
HEIDENHAIN 231-E00C - E00C Error in parameter transfer
This alarm stems from failed communication during the parameter handshake between the TNC control's NC software and the digital drive modules. The control cannot verify that drive parameters have been correctly written to or read from the axis controller memory, indicating either a hardware communication fault on the HSCI bus or a software incompatibility between control and drive firmware versions.
231-E00C
HEIDENHAIN 231-E00C - E00C Error in parameter transfer
E00C Error in parameter transfer
This TNC7/TNC 640 system error indicates Incorrect parameter for analog spindle. The control has detected an abnormal state that requires attention.
Root Cause Summary
This alarm stems from failed communication during the parameter handshake between the TNC control's NC software and the digital drive modules. The control cannot verify that drive parameters have been correctly written to or read from the axis controller memory, indicating either a hardware communication fault on the HSCI bus or a software incompatibility between control and drive firmware versions.
Safety
- Refer to Heidenhain service manual
- Ensure qualified technician performs repairs
Causes and Fixes
- 1
Inspect HSCI Cable Connections
Power down completely. Check all connections at the CC/UMC module connectors (typically X116 for axis 1, X216 for axis 2, etc.). Verify locking mechanisms are engaged and pins show no corrosion or damage.
Ensure complete power isolation before disconnecting HSCI cables - live disconnection can damage communication transceivers.
- 2
Perform Cable Continuity Test
Using a multimeter, verify continuity on all HSCI cable conductors between NC control backplane and CC/UMC modules. Check for shorts between adjacent pins. Replace cable if any faults detected.
HSCI cables are sensitive to routing near power cables - maintain minimum 100mm separation from inverter power lines.
- 3
Check Drive Hardware Status
Navigate to Test -> Axis test, select affected axis, and observe communication status indicators. Green status confirms HSCI link is active. Red/yellow indicates hardware fault.
The axis test screen updates in real-time - watch for intermittent connection drops that suggest vibration-related connector issues.
- 4
Review Error Log Details
Access MOD -> System diagnostics -> Error log. Look for preceding errors that may indicate HSCI timeout values (typically error entries showing 'HSCI timeout' or 'parameter CRC error' before E00C).
Export the error log to USB via the backup function - Heidenhain support can analyze timestamp patterns to identify intermittent vs. permanent faults.
Call a technician if:
- ·Hardware component replacement required
- ·Software update needed
- ·Parameter memory corruption persists
Prevention
- Regular parameter backup
- Avoid unauthorized parameter changes
- Monitor analog output card diagnostics
- Keep software versions documented
Common Mistakes
- Changing parameters without backup
- Ignoring software version compatibility
- Not verifying analog output voltages
- Mixing parameter sets from different software versions
Seeing Multiple Alarms?
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Always verify with your machine manual or a certified technician before performing service procedures.