Protection Against Power Failure While Updating Via The Web Server - Siemens SINAMICS S120 Function Manual

7.24.5

Protection against power failure while updating via the Web server

To ensure data protection against power failure updating via the Web server, as of firmware
V4.6, the data on the working partition is duplicated on the memory card on the backup
partition. This ensures that when you update the data on the memory card a data loss
cannot occur due to a fault. Only the system can access this backup partition. The partition is
not visible for users.
Note
Minimum requirements
Use of this feature is not possible with memory cards of older firmware versions (e.g. V4.5).
The following requirements must be satisfied for working with automatic backup copies:
• A Control Unit with the correct function version (see "Read function version (Page 826)")
• an original memory card for firmware version V4.6 or higher
Inconsistent data on the memory card
If the data on the working partition of the memory card and the backup partition is no longer
consistent, the warning "A01073: POWER ON for backup copy on memory card required" is
emitted. In this case, an entry is made in the diagnostic buffer of the Control Unit. A POWER
ON must therefore be performed to update the data on the backup partition.
Automatic restoration of defective data
If inconsistent data is detected on the memory card, the system automatically restores the
relevant data. If, for example, the working partition of the memory card is damaged, this
partition is reformatted and restored with the data of the backup partition. In this case the
message "F01072: memory card recreated from backup copy" is emitted.
Uncertain updates
As of firmware V4.6, older memory cards no longer harmonize with the current boot loader.
Only an uncertain update is possible when using older cards.
Drive functions
Function Manual, (FH1), 04/2014, 6SL3097-4AB00-0BP4
7.24 Upgrade the firmware and project
Basic functions
381