Siemens S7-300 Configuration Manual page 65

"Enable web server" option
Enable this option in order to be granted access to the HTML pages on the CP. Port 80 of
the CP is thereby enabled.
Web server access is enabled by default.
Options of Web diagnostics
Table 3- 5
Option / input area
Topology display
Download firmware via Web
Reload of language files for the
diagnostics displays via Web
Configuring and commissioning S7 CPs for Industrial Ethernet
Configuration Manual, 09/2013, C79000-G8976-C182-13
Options / input area for the "Web" parameter group
Meaning / effect
The option allows the display of topology information for the
networked PROFINET IO interfaces of the CP in the Web
server.
To collect and store the topology information, additional memory
is taken up on the CP. With complex project configurations
making high demands on the memory resources, it may
therefore be advisable to activate the option only temporarily for
service purposes.
With a large number of devices in a PROFINET IO system, the
size of the configuration data can exceed the maximum
permitted value. In this case, you need to deactivate the
topology display.
By enabling the option, the function for downloading the
firmware of the CP from the download center is enabled in the
Web server.
This option is not restricted by the user administration if security
is disabled. It is therefore recommended that the option is
enabled only when required.
Diagnostics displays of the CPs are shown in plain language in
the Web diagnostics buffer. These displays are language-
specific.
If you enable the option, the function for reloading missing
language files from the download center is enabled in the Web
server.
Configuring the Ethernet CP with STEP 7
3.3 Setting further CP properties
65