Function not permitted
Cause of error
You tried to use a feature that is not enabled on your TNC by the Feature Content Level (FCL) management.
By default, FCL functions are locked after a software update. By entering the code number 65535 in the SIK menu, you can enable
these functions for a certain period of time for test purposes. You can enable FCL functions permanently by purchasing and
entering a code number. For more information, contact your machine tool builder or the control manufacturer.