221-0072

Access Machine Parameters

Press MOD key (requires password), select 'Machine Parameters', navigate to general parameters section, locate MP7500 CfgAxisSequ

Document all existing parameter values before making changes. Incorrect axis sequence can cause machine damage.

Verify Axis Sequence String

Check MP7500 string matches your machine configuration. Typical turning/milling center: 'X Y Z A B C W' or 'X Y Z C W' depending on machine. Ensure spindle (C) and facing slide (W) are present if used in kinematics.

The order matters: axes should be listed in the sequence they appear in the kinematic chain from workpiece to tool.

Compare with Machine Documentation

Reference machine manufacturer's parameter list to verify correct axis sequence for your specific machine model and configuration. Entry must match exactly including spaces.

If you have a similar machine nearby, compare MP7500 values to ensure consistency.

Save and Reboot

If changes made, press 'Save All' in parameter screen, exit MOD mode, perform complete control restart (power cycle) to reinitialize kinematic model with new configuration.

Access System Files

Press MOD key, select 'System Files' or 'File Manager', navigate to TNC:\system\ directory, locate KinematicsOpt.sys file

System files are critical. Create backup copy before editing: copy to USB or TNC:\backup\ directory.

Inspect Kinematic Definitions

Open KinematicsOpt.sys in TNC editor. Look for sections defining spindle axis (typically [SPINDLE] or [C_AXIS]) and facing slide (typically [W_AXIS] or [FACING_SLIDE]). Verify these sections exist and contain complete parameter sets.

Each axis in kinematics needs definition including axis type, position in chain, and transformation parameters. Missing brackets or incomplete sections cause this alarm.

Validate Against Machine Type

Check that kinematic model type declared in file matches MP7600 value and actual machine configuration. Common types: Type 4 (mill-turn), Type 5 (turning center). Spindle/facing slide definitions must match declared type.

Look for 'TYPE=' parameter in KinematicsOpt.sys header section and cross-reference with machine documentation.

Restore from Backup if Corrupted

If file appears incomplete or corrupted, restore from TNC:\backup\ directory or from machine builder's parameter archive. After restoration, reboot control and verify alarm clears.

If no backup available, contact machine builder for factory KinematicsOpt.sys file specific to your machine serial number.

Check Spindle as Rotary Axis Configuration

Access machine parameters, navigate to spindle parameters section (typically MP3000-3999). Verify MP3680 (Spindle as axis) is set correctly: 0=spindle only, 1=also C-axis for positioning.

If your machine has C-axis capability but MP3680=0, kinematic model cannot integrate spindle axis.

Verify C-axis Machine Parameters

Check MP710x series for C-axis (where x matches C-axis number): MP7100 (axis designation), MP7101 (display steps), MP7103 (max traverse), MP7110 (backlash). All must have valid values if C is in kinematic chain.

Setting MP7103 (max traverse) to incorrect value for rotary axis can cause following errors. Should be 360.000 or 9999.999 depending on configuration.