Buffer Memory Nvram - Siemens SIMATIC IPC477E PRO Operating Instructions Manual

Operating the device and device functions
6.4 Extended device functions
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.
6.4.4

Buffer memory NVRAM

The motherboard is equipped with an optional 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 and
for using the CPU150xS SW controller.
70
Add file
Add folder
Remove file
Remove folder
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 /?
SIMATIC IPC477E PRO
Operating Instructions, 08/2017, A5E39912462-AA