Using The User Program To Set Additional Access Protection - Siemens SIMATIC S7-1500 System Manual

Protection

11.5 Using the user program to set additional access protection

Behavior of a password-protected CPU during operation
The protection of the CPUs up to CPU FW version 3.0 takes effect for an online connection
after you have loaded the settings into the CPUs. If you set a higher access level and
download it to the CPU, all other online connections will be interrupted. You will then need
to establish a new online connection.
Before an online function is executed, the necessary permission is checked and, if necessary,
the user is prompted to enter a password. The password only provides access to protected
functions for the local PG/PC on which the password is entered.
Access authorization to the protected data applies for the duration of the online connection
or for as long as you have STEP 7 open. The menu command "Online > Clear access rights"
cancels the access authorization.
Access levels for F-CPUs
You can find more information on the access level "Full access incl. fail-safe (no protection)"
for the fail-safe CPUs up to CPU FW version V3.0 in the description of the F-system SIMATIC
Safety Programming and Operating Manual SIMATIC Safety – Configuring and Programming
(https://support.industry.siemens.com/cs/ww/en/view/54110126).
Restricting access to SINAMICS Integrated
Note
You can find a description of how to limit access to specific functions on SINAMICS Integrated
in the section Secure operation of SINAMICS Integrated (Page 52).
11.5 Using the user program to set additional access protection
Access protection with the user program
You can also restrict access to a password-protected CPU using the ENDIS_PW instruction in
STEP 7.
You can find more information on this instruction in the STEP 7 online help under "ENDIS_PW:
Limit and enable password legitimation".
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SIMATIC Drive Controller
System Manual, 11/2023, A5E46600094-AD