Siemens SIMATIC S7-1500 Manual page 25

Function
Integrated closed-loop con­
trol functionality
Integrated safety
Know-how protection
Copy protection
Access protection
Integrity protection
Password provider
CPU 1518T-4 PN/DP (6ES7518-4TP00-0AB0)
Equipment Manual, 11/2022, A5E50479758-AB
Description
• PID Compact (continuous PID controller)
• PID 3Step (step controller for integrating actuators)
• PID Temp (temperature controller for heating and
cooling with two separate actuators)
The know-how protection protects user blocks against
unauthorized access and modifications.
Copy protection links user blocks to the serial number of
the SIMATIC memory card or to the serial number of the
CPU. User programs cannot run without the correspond­
ing SIMATIC memory card or CPU.
Extended access protection provides high-quality protec­
tion against unauthorized configuration changes. You
can use authorization levels to assign separate rights to
different user groups.
The CPUs feature an integrity protection function by
default. This helps to detect any manipulation of the
engineering data on the SIMATIC Memory Card or during
data transfer between the TIA Portal and the CPU, and to
check communication from a SIMATIC HMI system to the
CPU for possible manipulation of engineering data. The
user receives a corresponding message about manipula­
tion of engineering data detected by the integrity protec­
tion.
As an alternative to manual password input you can con­
nect a password provider to STEP 7. A password provider
offers the following advantages:
• Convenient handling of passwords. STEP 7 reads the
password automatically for the blocks. This saves you
time.
• Optimum block protection because the users do not
know the password itself.
Product overview
3.4 Firmware functions
Additional information
PID control function manual
(https://support.industry.siemens.
com/cs/ww/en/view/108210036)
System manual S7‑1500/ET 200MP
(https://support.automation.siemens.
com/WW/view/en/59191792)
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