Http (Hypertext Transfer Protocol); Dhcp (Dynamic Host Configuration Protocol) - WAGO 750 Series Manual

This is done via the web-based management system on the appropriate HTML
page saved in the controller, which is accessed via the "Port" link.
If the BootP protocol is deactivated, the controller uses the parameters stored
in the EEPROM at the next boot cycle.
If there is an error in the stored parameters, a blink code is output via the IO
LED and configuration via BootP is automatically switched on.

5.3.4.4 HTTP (HyperText Transfer Protocol)

HTTP is a protocol used by WWW (World Wide Web) servers for the
forwarding of hypermedia, texts, images, audiodata, etc.
Today, HTTP forms the basis of the Internet and is also based on requests and
responses in the same way as the BootP protocol.
The HTTP server implemented in the ETHERNET fieldbus controller is used
for viewing the HTML pages saved in the fieldbus controller. The HTML
pages provide information about the fieldbus controller (state, configuration),
the network and the process image.
On some HTML pages, controller settings can also be defined and altered via
the web-based management system (e.g. whether IP configuration of the
controller is to be performed via the DHCP protocol, the BootP protocol or
from the data stored in the EEPROM).
The HTTP server uses port number 80.

5.3.4.5 DHCP (Dynamic Host Configuration Protocol)

The controller's built-in HTML pages provide an option for IP configuration
from a DHCP server, a BootP server, or the data stored in its EEPROM by
default.
Note
The network configuration via DHCP is not stored in the EEPROM, this only
occurs when using the BootP protocol.
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP
ETHERNET
Network Communication
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