235-0080

Check SIK Physical Connection

Verify the SIK is properly seated in the USB port or SIK slot on the TNC control unit.

Power down the control before removing/inserting SIK

Verify SIK Recognition

Access MOD function → System → General → License Management to check if SIK is detected and shows valid license information.

The SIK LED should show steady green when properly recognized

Test Alternative SIK Port

If multiple USB ports available, try connecting SIK to different port and restart control.

Some TNC models have dedicated SIK slots that provide more reliable connection than USB ports

Replace SIK Hardware

If SIK still not recognized, contact Heidenhain for SIK replacement with same license configuration.

Access System Diagnostics

Navigate to MOD function → System → Diagnosis → Memory to check CF card/SSD status and partition integrity.

Look for any red status indicators or error messages in memory diagnostics

Backup Current Configuration

Create backup via MOD → System → Configuration → Backup before attempting partition recovery.

Always backup before any partition operations to prevent data loss

Rebuild PLCE Partition

Use TNCguide software or MOD → System → Configuration → Restore to rebuild PLCE partition from known good backup.

Ensure backup contains matching TNC software version and PLCE configuration

Verify Partition Integration

Restart TNC and monitor startup sequence to confirm PLCE partition loads without alarm 235-0080.

Check Software Versions

Compare current TNC version (MOD → System → General → Version) with PLCE partition creation version in system logs.

PLCE partitions are typically tied to specific TNC software builds

Update TNC Software

Install matching TNC software version using TNCguide or contact Heidenhain for compatible software package.

Software updates may require machine parameter verification and axis calibration

Regenerate PLCE Configuration

If version matching not possible, recreate PLCE partition using current TNC software and import PLC program separately.

Export PLC program as .PLC file before partition changes for easy reimport

Review PLCE Parameters

Check machine parameters MP7680-MP7699 range for PLCE-specific settings and verify against machine documentation.

MP7680.x parameters control PLCE partition behavior and security settings

Reset Security Parameters

Access MOD → Machine Parameters → Security and reset PLCE-related security settings to default values.

Document current parameter values before making changes

Restart with Clean Parameters

Perform controlled restart and monitor PLCE integration with corrected parameter settings.

Use parameter comparison function to verify changes took effect