Siemens SIMATIC NET S7-CPs Manual page 7

As an alternative to STEP 7, you have the option of assigning the connection
configuration via a block interface in the user program (FB55: IP_CONFIG).
S Web diagnostics
With the aid of Web diagnostics, you can read out the diagnostic data from a
station connected via the CP to a PG/PC with an Internet browser.
If you do not require this function, you can disable it in the STEP 7 configuration
and disable the port 80.
CP 343-1 Lean for Industrial Ethernet / Manual Part B
Release 09/2009
C79000-G8976-C198-06
1 Properties / Services
B−7