Protection
14.2 Configuring access protection for the CPU
S7-1500 Automation System
System Manual, 01/2013, A5E03461182-01
155
Note
Configuring an access level does not replace know-how protection
Configuring access levels prevents unauthorized changes to the CPU, by restricting
download privileges. However, blocks on the SIMATIC memory card are not write- or read-
protected. Use know-how protection to protect the code of blocks on the SIMATIC memory
card.
Parameterizing the procedure at access levels
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.
Figure 14-1 Possible access levels
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.
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