Siemens SIMATIC S7-1500/ET 200MP System Manual page 226

Access levels of the CPU
Table 10- 1 Access levels and access restrictions
Access levels Access restrictions
Full access including Users of STEP 7 and HMI applications have access to all standard and fail-safe functions.
fail-safe (no protec-
A password is not required.
tion)
Complete access (no Users of STEP 7 have access to standard functions.
protection)
HMI applications can access all functions (fail-safe and standard).
Required password: For additional access to the fail-safe functions, the user must enter the pass-
word for "Full access incl. fail-safe" in STEP 7.
Read access In this access level, only read access to the hardware configuration and the blocks is possible without
a password. HMI access and access to diagnostics data is also possible.
Neither blocks nor the hardware configuration can be downloaded to the CPUs without the pass-
word.
Additionally, the following is not possible without the password: Writing test functions and firmware
update (online).
HMI access The access restrictions that apply to read access also apply to HMI access.
Additionally, the following is not possible without the password: Test functions, changing the oper-
ating mode (RUN/STOP), firmware update and display of online/offline comparison status.
No access (complete When the CPU has complete protection, no read or write access to the hardware configuration and
protection) the blocks is possible (without access authorization in the form of a password). HMI access is also not
possible. The server function for PUT/GET communication is disabled in this access level (cannot be
changed).
Authentication with the password will again provide you full access to the CPU.
Reference
An enumeration of which functions are available in the different access levels is available in
the "Setting options for the protection" entry in the STEP 7 online help.
Automation system
System Manual, 01/2023, A5E03461182-AK
10.3 Configuring access protection for the CPU
Protection
225