230-0474

Access machine parameter menu

Press MOD key, select 'Machine Parameters', navigate to MP7500 series (Axis Group Parameters) to check for axis group enable definitions.

Use the search function in machine parameters by entering '7500' to quickly locate axis group parameters.

Review IOC configuration file

Access the IOC file through TNCopt or file manager, search for axis group enable signal definitions in the digital input assignments section.

Always backup the IOC file before making any modifications.

Remove duplicate definitions

Delete either the IOC file entries or clear the corresponding machine parameters MP7500.x, keeping only one definition method active.

Machine parameter definitions take priority, so if both exist, the IOC entries are ignored but still trigger the alarm.

Perform control restart

Execute a complete TNC restart to reload the configuration and verify alarm clearance.

Ensure all programs are saved before restarting the control.

Open IOC file editor

Navigate to TNCopt or use the integrated file editor to access the current IOC configuration file.

Look for the [DI] section where digital inputs including axis group enables are typically defined.

Validate axis group enable syntax

Check that axis group enable entries follow correct format: 'AxisGroupEnable_X = DI_Y' where X is group number and Y is input number.

Incorrect syntax can cause the TNC to misinterpret the configuration.

Cross-reference with TNC documentation

Verify IOC syntax against the current TNC software version documentation, as syntax requirements may vary between versions.

Use the TNC's built-in help system by pressing HELP key while in the IOC editor.

Test configuration validity

Save the corrected IOC file and restart the TNC to validate the configuration changes resolve the alarm condition.

Navigate to axis group parameters

Access MOD menu, select 'Machine Parameters', go to MP7500 series to review all axis group enable parameter settings.

Parameters showing non-zero values indicate active definitions that may conflict with IOC settings.

Document current parameter values

Record all MP7500.x parameter values before making changes to ensure proper restoration if needed.

Incorrect axis group parameters can prevent machine operation or cause safety issues.

Clear conflicting parameters

Set MP7500.x parameters to 0 or default values if axis group enabling is handled through IOC file configuration.

Use the 'Reset to Default' function for the entire MP7500 series if unsure about individual parameter functions.

Verify parameter changes

Save parameter changes and restart TNC to confirm alarm resolution and proper axis group functionality.

Check TNC software version

Press MOD key, select 'System Info' to verify current TNC software version and compare with previous configuration requirements.

Note the exact software build number as configuration requirements can change between minor versions.

Review software update documentation

Consult HEIDENHAIN technical documentation for the current software version regarding axis group enabling configuration changes.

Configuration methods may have changed between software versions, requiring migration of settings.

Update configuration method

Migrate axis group enable configuration to the method recommended for the current software version, removing obsolete definitions.

Newer TNC versions typically prefer machine parameter configuration over IOC file definitions.

Validate updated configuration

Test all axis group enabling functions after configuration update to ensure proper operation and alarm resolution.