3.2
Backup license
Validity of the license key
The license key corresponds to the serial number of the CompactFlash Card. If the
CompactFlash Card is replaced for a SINUMERIK 840D sl, the license key loses its validity
and the system is no longer ready for operation.
This situation can occur for a defective hardware of the system CompactFlash Card.
Application
For the following cases, backup the license key of the CompactFlash Card on a USB storage
medium or on a network drive:
● Software update without license key
● System software error without defective hardware
Note
Replacement CompactFlash Card
The following data are required in order to obtain a valid license key after replacing the
system CompactFlash Card: The serial number of the defective and the new
CompactFlash Card.
NCU operating system (IM7)
Commissioning Manual, 03/2013, 6FC5397-1DP40-3BA1
Service and diagnostics
3.2 Backup license
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