Siemens S7-300 - 8.4 SM 326; DI 8 x NAMUR

Configuring communications connections
5.7 Configuring UDP connection properties
Configuring and commissioning S7 CPs for Industrial Ethernet
Configuration Manual, 09/2013, C79000-G8976-C182-13
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5.7
Configuring UDP connection properties
5.7.1
Specifying UDP addresses
Address parameters and connection types
With UDP, the communication partners are addressed by the local and remote endpoints as
follows:
● Local addresses:
Local IP address and local port
● Remote addresses:
Remote IP address and remote port
Note
The term "connection" is also used here for UDP.
The reason:
During configuration (just as in TCP), the communications partners are assigned to each
other and therefore logically "connected". In
actual fact, with UDP there is no explicit
connection establishment between communication partners.
Depending on the required connection type, the remote address parameters are either
specified or left open during configuration.
● Specified UDP connection
You specified a destination station when you created the connection.
Configuring broadcast or multicast provides you with a further option (see Section UDP
with broadcast and multicast (Page 107)).
● Unspecified UDP connection
You entered "unspecified" for the connection partner when you created the connection.
Configuring addresses
STEP 7 displays proposed values for the relevant local and remote address information. If
necessary, you can set the ports individually.