Access Protection; Configuring Access Protection For The Cpu In Step 7 - Siemens SIMATIC S7-1500 Operating Instructions Manual

8.4

Access protection

8.4.1

Configuring access protection for the CPU in STEP 7

Introduction
To limit access to specific functions, the CPU offers different access levels.
Access levels and CPU passwords limit the functions and memory areas that are accessible
without password. The individual access levels as well as the entry of their associated
passwords are specified in the object properties of the CPU.
Access levels of the CPU
The following table provides you with an overview of the access levels of the CPU:
Access levels
Full access including fail-
safe
(no protection)
Complete access (no protec‐
tion)
Read access
CPU1505SP (F), CPU 1507S (F) and CPU 1508S (F) SIMATIC Industrial OS Version 30.0
Operating Instructions, 04/2023, A5E50811213-AC
Access restrictions
Every user can change fail-safe blocks.
Every user can read and change the hardware configuration and the blocks. The writing of fail-
safe modules is excluded.
With this access level, read-only access to the hardware configuration and the blocks is possible
without entering a password. This means you can upload the hardware configuration and blocks
to the programming device.
In addition, the following is possible:
• HMI access
• Access to diagnostics data
• Display of offline/online comparison results
• Changing the operating state (RUN/ STOP)
• Setting time-of-day
However, you cannot download blocks or hardware configuration into the CPU without pass‐
word.
In addition, the following is not possible without a password: Writing test functions and firm‐
ware updates (online).
Protection
8.4 Access protection
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