Siemens Simatic S7-400 - Manual (Page 459)

CPUs for M7-400
11-31
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
Password
Enter Setup
By activating this check box, you can assign a password that authorizes access to
the Setup.
System Boot
By activating this check box, you can assign a password that permits booting of the
operating system.
You can only set this password if a valid password was already entered for “Enter
Setup”.
Note
The password can have a maximum of 8 alphanumeric characters. Upper and
lower case are distinguished. If you use the American keyboard to enter the
password and then change, for example, to using another national keyboard such
as the German, this can have consequences for the password. For the password
Johnny_* you would then have to enter Johnnz?
Write down your password and keep it in a safe place where you can find it again.
If you lose or forget your password, contact your local Siemens dealer.
OK Button
Activating this button returns to the Setup menu. Changes on the setup page are
retained.
CANCEL Button
Activating this button returns to the Setup menu. Deletes all changes you have
made on the setup page.