File-Based Write Filter (Fbwf) - Siemens simatic ET 200SP User Manual

8.5.2

File-Based Write Filter (FBWF)

Purpose and function
The FBWF allows you to write-protect specific files and folders of a partition.
FBWF is deactivated by default on the CPU 1515SP PC.
The FBWF is activated by means of the Windows console application fbwfmgr.exe.
NOTICE
Data loss
If both write filters are activated, the EWF blocks direct write access of the FBWF.
Data is lost after a restart of the CPU 1515SP PC.
Activate only one of the two write filters.
Console application fbwfmgr.exe
The application is called via the Windows command line (Command Prompt).
The following functions, among others, are available for setting, switching on and switching
off the FBWF:
Table 8- 3
Function
Show FBWF status
Activate FBWF after the next restart
Write to protected files
Display help
Defining exclusions:
•
•
•
•
CPU 1515SP PC
Manual, 12/2014, A5E32701806-AA
File-Based Write Filter
Add file
Add folder
Remove file
Remove folder
8.5 Protective functions for data carriers
Command
fbwfmgr /displayconfig
fbwfmgr /enable
fbwfmgr /commit c: \<path>\<file name>
?
fbwfmgr /
fbwfmgr /addexclusion c:
\<path>\<filename.ext>
fbwfmgr /addexclusion c: \<path>
fbwfmgr /removeexclusion c:
\<path>\<filename.ext>
fbwfmgr /removeexclusion c: \<path>
Functions
71