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

Protection

9.3 Using the user program to set additional access protection

Behavior of a password-protected CPU during operation
CPU protection takes effect for an online connection once settings have been loaded to 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 additional information on the access level "Full access including failsafe (no
protection)" 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
For information on how to limit access to specific functions on SINAMICS Integrated, please
see the SINAMICS S120 documentation
(https://support.industry.siemens.com/cs/ww/en/ps/13231/man).
9.3 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, 11/2019, A5E46600094-AA