HEIDENHAIN TNC 640 User Manual page 12

Feature Content Level (upgrade functions)
Along with software options, significant further improvements of
the control software are managed via the Feature Content Level
upgrade functions. If you install a software update on your control
you do not automatically have the functions available as covered by
the FCL.
All upgrade functions are available to you without
surcharge when you receive a new machine.
Upgrade functions are identified in the manual as FCL n. The n
signifies the serial number of the development status.
You can purchase a code number in order to permanently enable
the FCL functions. For more information, contact your machine tool
builder or HEIDENHAIN.
Intended place of operation
The control complies with the limits for a Class A device in
accordance with the specifications in EN 55022, and is intended for
use primarily in industrially-zoned areas.
Legal information
This product uses open source software. Further information is
available on the control under:
Programming operating mode
MOD function
LICENSE INFO soft key
12
Fundamentals | Control model, software and features
HEIDENHAIN | TNC 640 | ISO Programming User's Manual | 10/2017