Siemens SIMATIC S7-1500 CPU 1511-1 PN Equipment Manual page 26

Product overview
3.5 Operating and display elements
Removing and fitting the front panel or display
You can remove and fit the front panel or the display during operation.
Personal injury and damage to property may occur
If you pull or plug the front panel of an S7‑1500 automation system during operation,
personal injury or damage to property can occur in zone 2 hazardous areas.
Before you remove or fit the front panel, always switch off the power supply to the S7‑1500
automation system in hazardous area zone 2.
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 (http://support.automation.siemens.com/WW/view/en/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).
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WARNING
CPU 1511-1 PN (6ES7511-1AL03-0AB0)
Equipment Manual, 11/2022, A5E40869673-AC