Siemens SIMATIC S7 F, Руководство пользователя

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Configuration
Fail-Safe Systems
A5E00085588-03
4-9
Changing the Password
A password can only be changed by changing the configuration.
To do this for the S7 F System, you must switch the CPU to STOP.
It is possible to change the password (configuration change) for the S7 FH System
without interrupting the process (in RUN mode).
4.8.2 Entering/Changing the Password for the Safety Program
To enter or change the password for the safety program, proceed as follows:
1. Select the CPU or its S7 program in SIMATIC Manager.
2. Choose the Options > Edit Safety Program menu command.
3. Select the "Password..." button in the Safety Program dialog box that appears,
and perform the appropriate action as listed below:
•
Enter the password for the Safety Program for the first time. In this case,
ignore the "Old Password" field.
•
Change the existing password for the Safety Program. You must enter the
existing password in the "Old Password" field.
Use the Cancel Access Rights button to immediately stop the one-hour persistence
of Access Rights since the last time the password was entered. Following this, any
user must provide the Safety Program Password explicitly for any operation that
normally requires it, regardless of how much time has passed since the last entry
of the password.
!
Safety Note – Safety Program and CPU Passwords should be different
We recommend you use different passwords for the CPU and for the safety
program for improved access protection.
If you haven’t already entered a password, you will be requested to enter one when
you compile the Safety Program for the first time (see below, "Request for the
Password for the Safety Program".)
You can change the password in the same way as usual under Windows 95/98/NT
by entering the old password once and the new password twice.
The password for the Safety Program is stored offline in the ES/programming
device together with the safety program.