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Access machine parameter menu

Press MOD key, select 'Machine Parameters', navigate to CfgAxisSafety section using the parameter tree.

Use Ctrl+F to quickly search for 'CfgAxisSafety' in the parameter list

Verify axisGroup parameter

Check the axisGroup entry and compare against valid axis names defined in CfgAxis. Ensure all referenced axes exist and are properly configured.

Do not modify safety parameters without proper authorization and safety lockout procedures

Cross-reference with CfgAxis

Navigate to CfgAxis parameters and verify that all axes referenced in axisGroup are properly defined with correct axis types and identifiers.

Document the original configuration before making changes

Restart control system

After correcting the axisGroup parameter, perform a complete TNC restart to reinitialize the safety system with the corrected configuration.

Review all safety group assignments

In CfgAxisSafety, check all axisGroup entries to identify any duplicate axis assignments across different safety groups.

Create a spreadsheet listing all axes and their group assignments for easier conflict detection

Check standard axis configuration

Compare CfgAxisSafety assignments with the standard CfgAxis configuration to ensure no conflicts exist between safety and standard axis definitions.

Resolve assignment conflicts

Remove duplicate assignments and ensure each axis belongs to only one safety group. Update the axisGroup parameter accordingly.

Changing safety group assignments may affect machine safety functions - consult safety documentation

Validate configuration consistency

Use TNC diagnostic functions to verify the corrected axis group configuration is consistent across all safety and standard parameters.

Backup current parameters

Create a complete backup of all machine parameters using TNC backup function before attempting any repairs.

Save backup to external USB device with timestamp in filename

Check parameter file integrity

Navigate to the parameter file location and examine CfgAxisSafety for syntax errors, missing brackets, or incomplete entries.

Only qualified personnel should edit safety parameter files directly

Restore from known good backup

If corruption is confirmed, restore CfgAxisSafety from a previously saved working configuration or factory defaults.

Compare timestamps of parameter files to identify when corruption may have occurred

Reconfigure axis groups

After restoration, reconfigure the axisGroup parameters according to machine specifications and safety requirements.

Verify physical axis configuration

Check actual installed axes against the axisGroup definitions in CfgAxisSafety to identify mismatches.

Use TNC axis status display to confirm which axes are physically detected

Update hardware configuration

Modify CfgAxis parameters to reflect actual installed hardware, ensuring axis types and identifiers match physical configuration.

Synchronize safety parameters

Update the axisGroup parameter in CfgAxisSafety to match the corrected hardware configuration in CfgAxis.

Ensure safety system approval before modifying safety-related axis assignments

Perform axis reference run

Execute reference point approach for all axes to verify proper hardware-software integration after parameter changes.