Siemens Simatic S7-400 - Manual (Page 458)

CPUs for M7-400
11-30
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
CANCEL Button
Activating this button returns to the Setup menu. Deletes all changes you have
made on the setup page.
11.4.8 Setup Page “Security”
Opening the Setup Page
If you have selected “Security” in the Setup menu (Figure 11-9 on page 11-23) and
activated the OPEN button, this setup page appears on the screen (Figure 11-14).
Figure 11-14 “Security” Setup Page
What is the Purpose of the Setup Page?
On this setup page, you activate or deactivate the write protection for the disk drive
and hard drive and the password protection for setting up and/or booting the CPU.
Device Security
Floppy Disk Read Only
When this check box is activated, write access to the hard disk is no longer
possible.
Hard Disk Read Only
When this check box is activated, write access to the hard disk is no longer
possible.