Enhanced Write Filter (Ewf) - Siemens simatic ET 200SP User Manual

8.5.1

Enhanced Write Filter (EWF)

Purpose and function
The Enhanced Write Filter (EWF) allows you to write-protect individual partitions.
EWF is activated by default on the CPU 1515SP PC.
The EWF is activated by means of the pre-installed SIMATIC IPC EWF Manager or the
Windows console application ewfmgr.exe.
SIMATIC IPC EWF Manager
Start the software via Start > All Programs > Siemens Automation > SIMATIC >
EWF Manager.
In the status bar, you can use the SIMATIC IPC EWF Manager icon to check whether the
EWF is active.
Table 8- 1
Icons
The operating instructions for the SIMATIC Industrial PC: IPC EWF Manager
(http://support.automation.siemens.com/WW/view/en/50867677) is located on the
CPU 1515SP PC in Start > All Programs > Siemens Automation > Documents > Manuals.
CPU 1515SP PC
Manual, 12/2014, A5E32701806-AA
Meaning of the icons
Meaning
The partition is protected by the EWF.
The EWF is deactivated for this partition.
The EWF is currently switched off, but will be activated after the restart.
The EWF is currently active, but will be deactivated after the restart.
The filter is active. A Commit command is executed before the next reboot.
The filter is currently active, but will be deactivated after the restart.
A Commit command will also be executed before the next reboot.
8.5 Protective functions for data carriers
Functions
67