Siemens MJ-5, Инструкция по установке и эксплуатации

Страница: 34 / 109

4 Setting Up the MJ-5 Control Panel
Siemens Industry, Inc. 30
2. A Level 2 password is associated with a specific
menu. When a menu is protected at Level 2, the Level
2 password must be entered before changes/ resets can
be made to data items within that menu. Entering any
Level 2 password provides access to all Level
1 protected data items as well as to data items contained in
menus that are protected by that specific Level 2 password.
In other words, when a Level 2 (menu) password has been
entered, the change/reset function is enabled for any data
item that is not protected by another Level 2 password.
Either Level can be activated independent of the other.
Security activation and password assignment are separate
functions. In other words, even though you have assigned a
password to a Level, password checking can be active or
inactive for that Level.
With this flexible structure you can set up a security system
with:
•
A single Level 1 password.
•
A Level 1 password with additional Level 2 passwords
for specific menus.
•
No Level 1 password, but one or more level 2 (menu)
passwords.
•
No passwords at all.
•
Passwords defined, but password checking temporarily
disabled.
Table 4.7:
The < PASSWORD > menu
The default configuration for the password security system
is with all password protection disabled (except for the
<
DIAGNOSTIC > menu).
Control of the security system requires the use of a “System
Key,” which protects the changing of passwords and the
activation and de-activation of the two security Levels.
To ensure proper control of the MJ-5 security system, you
may wish to designate one individual as security
administrator. This person would be responsible for
establishing the password protection scheme and for
making changes to the passwords as necessary; he/she
would be the only individual requiring knowledge of the
“System Key.” The “System Key” not only allows the user
to change the security system, it also acts as a top level
password which allows access to all change/reset functions.
Once the “System Key” is entered and until the session is
ended, the security system is effectively disabled.
A Level 2 password will activate all of the configuration
options in that table. The user will not need to enter a
separate part under level 2 as shown in table 4.7.
Contact a Siemens representative if your passwords are
forgotten.
4.6.2 The <PASSWORD> Menu
The < PASSWORD > menu serves three purposes:
1.
To enter passwords so that you can change/reset
password-protected data items.
2. To define passwords