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Identify required software option

Read the complete alarm message on screen to identify which software option name appears in the '%1' placeholder (e.g., 'Advanced Function Set', 'KinematicsOpt', '5-Axis Option', etc.).

Check enabled software options

Press MOD key, navigate to 'System Configuration' or 'Diagnostics' > 'Software Options' or 'Info' > 'System Info' > 'Software Options'. Review the list of enabled options with checkmarks or 'Active' status.

Different TNC generations show this differently: TNC 320/iTNC 530 under 'MOD Info', TNC 620/640 under 'Setup' > 'Software Options'.

Document KeyNumber and ID

In MOD, check 'System Info' to note the control ID number and existing KeyNumbers. This information is required when ordering additional software options from Heidenhain or the machine builder.

Contact supplier for option code

Contact your machine tool builder or Heidenhain service partner with the control ID and required option name to purchase and receive the proper KeyNumber activation code.

Activate software option

Once KeyNumber is received, enter MOD function > 'System Configuration' > 'KeyNumber Input' and enter the new option code. Control will require restart to activate the new option.

KeyNumber entry is case-sensitive and must be entered exactly as provided. Incorrect entries may require waiting period before retry.

Access machine parameters

Enter MOD function using password protection (typically OEM level), navigate to 'Machine Parameters' or 'CfgMachinePar' depending on control generation.

Search option-specific parameters

Use the search function to look for parameters related to the specific option name shown in the alarm. Look for parameters with 'enable', 'disable', or 'option' keywords combined with feature name.

Common parameter prefixes: CfgKin for kinematics, CfgHSC for high-speed cutting, CfgUserFunctions for custom cycles.

Verify configuration settings

Check if relevant configuration parameter is set to 0 (disabled) or 1 (enabled). Note the parameter number and current setting before making changes.

Only modify machine parameters if you have proper authorization and documentation. Incorrect parameter changes can affect machine safety and behavior.

Consult machine documentation

Review machine tool builder documentation or contact their service department to verify if the option should be enabled for your machine configuration and if parameter change is permitted.

Enable and test

If authorized, change the parameter to enable the option, perform a control restart, and verify the software option now shows as active in MOD Software Options list.

Verify recent system changes

Check if the alarm appeared after a TNC software update, system backup restore, or hardware component replacement. Review MOD > 'System Info' > 'Software Version' for recent update date.

Check software option status

In MOD, navigate to 'Software Options' and compare currently active options against documentation of previously purchased options. Note which options show as inactive that should be enabled.

Keep a photo or written record of all purchased software options and KeyNumbers in machine documentation for situations like this.

Retrieve KeyNumber records

Locate original KeyNumber documentation from machine tool builder, Heidenhain delivery paperwork, or previous service records that list the purchased software option codes.

Re-enter option KeyNumbers

In MOD function, access 'System Configuration' > 'KeyNumber Input' and re-enter the KeyNumber codes for missing software options. Each code must be entered exactly as originally provided.

Restart and verify

Perform a control restart (full power cycle recommended). After restart, check MOD > 'Software Options' to confirm all options show as active, then test the previously blocked function.