Siemens SIMATIC S7-1500 Equipment Manual page 27

Locking the front panel
You can lock the front panel to protect your CPU against unauthorized access.
You can attach a security seal or a padlock with a diameter of 3 mm to the front panel.
Figure 3-3 Locking latch on the CPU
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.automation.siemens.com/WW/view/en/59191792) system manual.
Reference
You can 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 1516T-3 PN/DP (6ES7516-3TN00-0AB0)
Equipment Manual, 11/2022, A5E40898375-AC
Product overview
3.5 Operating and display elements
27