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Access machine parameter menu

Press MOD key, select 'Machine Parameters' from the TNC menu, navigate to spindle parameters MP7000-MP7999 range.

Use the search function in machine parameters by pressing the HELP key and typing the parameter number directly.

Verify spindle definition parameters

Check MP7110 (spindle assignment) and MP7120 (spindle type) for the spindle number referenced in the unbalance trace. Ensure these parameters are not set to 0 or undefined.

Do not modify machine parameters without proper authorization and backup of current settings.

Configure missing spindle parameters

If parameters are missing, configure MP7110 with correct spindle axis assignment and MP7120 with appropriate spindle type (typically 1 for standard spindle).

Reference the machine manufacturer's parameter documentation for specific spindle type codes.

Restart control system

Perform a complete TNC restart (Ctrl+Alt+Del or power cycle) to activate the new spindle configuration parameters.

Ensure all programs are saved before restarting the control.

Check unbalance trace configuration

Navigate to MOD menu > Machine Parameters > Spindle section, locate MP7580 (unbalance trace spindle number) and verify the spindle number matches an existing configured spindle.

Cross-reference with MP7110 entries to see which spindle numbers are actually configured in the system.

Verify spindle numbering consistency

Check that the spindle number in MP7580 corresponds to a spindle with complete parameter set including MP7110, MP7120, and associated drive parameters.

Spindle numbering must be consistent throughout all related parameter groups.

Correct spindle number assignment

Modify MP7580 to reference the correct spindle number that is properly configured in the machine parameters, typically spindle 1 unless multiple spindles are present.

Document the original parameter value before making changes for easy rollback if needed.

Verify drive interface parameters

Check MP7130 (spindle drive type) and MP7140 (drive interface) parameters for the spindle used in unbalance trace. These must be properly configured for the specific drive system.

Common drive types: 1=analog, 2=digital, 3=HSCI - verify with drive documentation.

Check feedback system configuration

Verify MP7150 (encoder type) and MP7160 (encoder resolution) are correctly set for the spindle encoder system, as unbalance trace requires proper speed feedback.

Incorrect encoder parameters can cause drive faults or measurement errors.

Validate communication parameters

For digital drives, check MP7170 (drive address) and MP7180 (communication parameters) to ensure proper communication between TNC and spindle drive.

Use the drive diagnostic screens in MOD menu to verify communication status before testing unbalance trace.

Check software options status

Navigate to MOD menu > System Info > Software Options, verify that unbalance trace or spindle monitoring options are listed and enabled in the TNC software configuration.

Look for options related to 'Spindle Monitoring' or 'Process Monitoring' in the software options list.

Verify option parameters

Check MP7590 (unbalance trace enable) is set to 1, and verify that all prerequisite software options for spindle monitoring are properly activated.

Software options typically require proper licensing and may need Heidenhain service support to activate.

Contact software support if needed

If software options are missing or disabled, contact Heidenhain technical support or machine tool builder for proper software option activation and licensing.

Have the TNC serial number and current software version ready when contacting support.