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

Functions
8.5 Protective functions for data carriers
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 enabled by default on the CPU 1515SP PC (F).
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 get lost after a restart of CPU 1515SP PC (F).
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:
•
•
•
•
Note
Note:
• The correct notation is as follows:
Drive letter: space character "\" relative file path
• The write protection commands become effective only after a restart.
82
File-Based Write Filter
Add file
Add folder
Remove file
Remove folder
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>
Manual, 05/2017, A5E32701806-AC
CPU 1515SP PC (F)