Buffer Memory Nvram - Siemens SIMATIC IPC477D Operating Instructions Manual

Configuring FBWF
FBWF can be configured in command console using the program FBWFMGR.EXE.
Note
• Observe the following syntax: Enter a space after the drive designation colon.
• Changes for direct write access only take effect after rebooting.
• Only existing files and folders can be entered in the exception list.
Function
Display the current FBWF status
Enable FBWF after the next startup
Write to protected files
Adding/removing elements in the exception list:
•
•
•
•
Call up the help function
Detailed instructions on FBWF are available on the Internet
(http://msdn.microsoft.com/en-us/library/aa940926(WinEmbedded.5).aspx).
5.6.4

Buffer memory NVRAM

The motherboard is equipped with an NVRAM that applications can use to back up data in
the event of a power failure. Failure of the supply voltage for a duration longer than 5 ms is
indicated by the DC FAIL signal.
Depending on the system utilization, up to 512 KB can be saved in the NVRAM.
A memory window with a maximum size of 512 KB can be displayed by means of PCI
address register. The base address is initialized by the BIOS.
A corresponding function is implemented there for using the NVRAM under WinAC RTX.
SIMATIC IPC477D, IPC477D PRO
Operating Instructions, 11/2016, A5E31347228-AF
Add file
Add folder
Remove file
Remove folder
Operating the device and device functions
5.6 Extended device functions
Command
fbwfmgr /displayconfig
fbwfmgr /enable
fbwfmgr /commit c: \Test.txt
fbwfmgr /addexclusion C: \Test.txt
fbwfmgr /addexclusion C: \Test fold-
er
fbwfmgr /removeexclusion
C: \Test.txt
fbwfmgr /removeexclusion C: \Test
folder
fbwfmgr /?
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