Siemens CP 243-1 IT, Техническое руководство

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03/03 Features and Functions
CP 243-1 IT
J31069-D0429-U001-A0-7618
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2.5 User Administration
How it works
When process data are exchanged via Intranet/Internet services, security becomes
very important.
To ensure security, user administration with graduated password protection was in-
tegrated on the CP 243-1 IT. Up to 8 users can be configured with the Internet wiz-
ard of STEP 7 Micro/WIN 32. During configuration, each of these users is assigned
a user name, a password and certain access rights. These access rights control
authorization to access process data and the file system.
The configuration of up to 8 users is stored on the file system of the CP 243-1 IT in
a file with the ending .udb. For security's sake, the passwords assigned during the
configuration are stored encrypted in this file.
Note
The user administration of the CP 243-1 IT does not support user groups.
Administrator
In addition to these 8 users, the user administration of the CP 243-1 IT recognizes
another user with special access rights - the administrator. The administrator is the
only user who may access the directory /__S7Sys and store the .udb configuration
file for user administration via FTP in the file system of the CP 243-1 IT.
The user name and the password of the administrator are configured with the
Internet wizard of STEP 7 Micro/WIN 32. However, unlike the configuration of the 8
users, this configuration is not stored in the file system of the CP 243-1 IT but on
the S7-200 CPU. Before the configuration of the 8 users can be transferred via
FTP to the file system of the CP 243-1 IT, an administrator with user name and
password must be set up for the CP 243-1 IT.
Granting of access rights
Access rights are organized by rights for the administrator and rights for the 8 other
users.
The following user rights can be configured for the administrator.
•
Access to all IT functions
•
Access to the FTP server