Security
4.6 Configuring access protection for the CPU
S7-1500
Getting Started, 05/2014, A5E03981761-AC
125
To configure the access levels of an S7-1500 CPU, follow these steps:
1. Open the properties of the S7-1500 CPU in the Inspector window.
2. Open the "Protection" entry in the area navigation.
A table with the possible access levels appears in the Inspector window.
3. Activate the desired protection level in the first column of the table. The green
checkmarks in the columns to the right of the respective access level show you which
operations are still available without entering the password.
4. In the "Password" column, specify a password for the selected access level. In the
"Confirmation" column, enter the selected password again to protect against incorrect
entries.
Ensure that the password is sufficiently secure, in other words, that is does not follow a
pattern that can be recognized by a machine!
You must enter a password in the first row ("Full access" access level). This enables
unrestricted access to the CPU for those who know the password, regardless of the
selected protection level.
5. Assign additional passwords as needed to other access levels if the selected access level
allows you to do so.
6. Download the hardware configuration to the CPU, so that the access level will take effect.
The CPU protection takes effect after the settings are downloaded in the CPU.
Before an online function is executed, the necessary permission is checked and, if
necessary, the user is prompted to enter a password. The functions protected by a password
can only be executed by one programming device/PC at any one time. Another programming
device/PC cannot log on.
Access authorization to the protected data is in effect for the duration of the online
connection, or until the access authorization is manually rescinded with "Online > Delete
access rights".
Access to a password-protected CPU in the RUN mode can be limited locally in the display
so that access with a password is also not possible.
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