Siemens SIMATIC S7-1500 Manual page 40

Locking the front panel
You can lock the front panels to protect the SIMATIC memory card and the mode selector of
the CPU against unauthorized access.
You can attach a security seal or a padlock with a diameter of 3 mm to the front panels.
Figure 2-5
In addition to the mechanical lock, you can also block access to a password-protected CPU on
the display (local lock) and assign a password for the display. You can find additional
information on the display, configurable protection levels and local locks in the S7-1500,
ET 200MP (https://support.industry.siemens.com/cs/ww/en/view/59191792) system manual.
Reference
You will find detailed information on the individual display options, a training course and a
simulation of the available menu commands in the SIMATIC S7-1500 Display Simulator
(https://support.industry.siemens.com/cs/ww/en/view/109761758).
CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)
Equipment Manual, 07/2021, A5E40882737-AB
Locking latch on the CPU
Product overview
2.5 Operating and display elements
39