Siemens Sinumerik 840D sl Function Manual page 569

10/15
Warning
!
From SINAMICS SW2.5 and higher, the following applies:
In a system configuration, the firmware versions of the DRIVE--CLiQ components
can only differ from the versions on the CF card, if either
a) the automatic upgrade/downgrade (parameter p7826) is deactivated, or
b) components with a new firmware version can no longer be downgraded to the
status of the version available on the CF card.
Case a) is not permitted when Safety Integrated is used. The automatic
upgrade/downgrade must never be disabled when Safety Integrated is used.
(automatic firmware update (p7826) must be equal to 1)
Case b) is only permissible if this combination has been explicitly approved by the
manufacturer.
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SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition
Commissioning
9.3 Series commissioning
9-569