Redundant Data Backup On Memory Card - Siemens SINAMICS S120 Function Manual

Basic information about the drive system
13.6 Data backup
Note
NVRAM and write protection
When write protection is activated, p7775 can only be written to from a higher-level controller
using cyclic communication.
More information on fault buffers, diagnostic buffers and message buffers is provided in the
SINAMICS S120 Commissioning Manual.
13.6.2

Redundant data backup on memory card

In conjunction with the "Firmware download via Web server" and the associated remote
access, the "Redundant data backup on memory card" provides safe access again to the
device in the event of an interruption of the connection or the power supply. This redundant
data backup cannot be deactivated.
As of firmware version V4.6, the memory cards have a backup partition in addition to the
normal working partition. The most important data is duplicated on this backup partition
during ramp-up of the CU. This ensures that when you update the data on the memory card
a data loss cannot occur due to a power failure. Only the system can access this backup
partition. The partition is not visible for users.
If damage to the file system is detected on the memory card, the system reconstructs the
data on the working partition from the backup partition at the next ramp-up of the CU. The
fault "F01072: memory card recreated from backup copy" is emitted. A running restoration of
the data is indicated via the LEDs (FW Loading). Generally, the restoration of the data takes
one minute.
The duplication of changed project data on the backup partition takes just a few seconds
during ramp-up. After write operations on the working partition (e.g. RAM to ROM), the
system automatically recognizes when an update of the backup copy on the backup partition
is required and issues the message "A01073: POWER ON required for backup copy on
memory card". In this case, perform a POWER ON for the Control Unit or a hardware reset
(via p0972).
As of firmware version V4.6, there may be a substantial data backup at the first ramp-up with
a memory card. Generally, this data backup only takes a minute and is indicated via the
LEDs (FW Loading). Such a data backup is also performed once for a firmware update or
hotfix of the memory card via the card reader (as of V4.6).
Danger to life through software manipulation when using removable storage media
The storage of files on removable storage media involves a high risk of infection, e.g. via
viruses or malware. As a result of incorrect parameterization, machines can malfunction,
which in turn can lead to injuries or death.
• Protect the files on removable storage media against harmful software through
826
WARNING
appropriate protective measures, e.g. virus scanners.
Function Manual, (FH1), 04/2014, 6SL3097-4AB00-0BP4
Drive functions