230-04B3

Check SIK axis options

Access MOD function, select 'System info' and review the licensed axis options in the SIK display to determine maximum allowed safe axes.

Document the exact SIK axis configuration before making changes

Review safe axis configuration

Navigate to Setup → Machine → Config → Axes and check MP7500.x parameters to count how many axes are configured with safe axis functionality enabled.

Do not modify MP7500 parameters without machine manufacturer approval

Disable excess safe axes

In MP7500.x series, set unnecessary safe axis configurations to 'NO' for axes that don't require safety functions, ensuring total doesn't exceed SIK limit.

Prioritize keeping safety functions on primary motion axes (X, Y, Z)

Restart control system

Perform a complete TNC restart to reinitialize the axis configuration and clear the alarm condition.

Access machine parameters

Navigate to Setup → Machine → Config → Axes and locate MP7500 series parameters for each configured axis.

Backup current machine parameters before making modifications

Audit safe axis assignments

Review each MP7500.x parameter to identify which axes have safe axis functionality enabled and verify against actual machine requirements.

Cross-reference with machine manufacturer's original parameter list

Correct parameter values

Set MP7500.x to 'NO' for axes that don't require safety monitoring, keeping only essential axes within SIK limits.

Typically only primary interpolating axes need safe axis functionality

Validate configuration

Verify the total number of enabled safe axes matches or is less than the SIK licensed quantity before restarting.

Document axis requirements

Create a detailed list of all axes requiring safe axis functionality based on machine safety requirements and operational needs.

Include justification for each safe axis requirement for license upgrade request

Contact Heidenhain support

Submit SIK upgrade request to Heidenhain with current SIK number, TNC serial number, and required safe axis quantity.

SIK upgrades require purchase and may take several days to process

Install new SIK

Once received, install the upgraded SIK file via Setup → General → SIK and restart the control system.

Keep backup of original SIK file before installing upgrade

Verify SIK authenticity

Check Setup → General → SIK to confirm the loaded SIK matches the machine serial number and intended configuration.

Never use SIK files from other machines

Restore correct SIK

Load the proper SIK file for this specific machine from backup or contact machine manufacturer for correct SIK.

SIK files are machine-specific and cannot be interchanged

Restart and verify

Perform complete TNC restart and verify all licensed options are correctly displayed in system information.