Siemens S7-300 - Configuring TCP Connection Properties; Specifying TCP Addresses

Configuring communications connections
5.6 Configuring TCP connection properties
Configuring and commissioning S7 CPs for Industrial Ethernet
Configuration Manual, 09/2013, C79000-G8976-C182-13
103
5.6
Configuring TCP connection properties
5.6.1
Specifying TCP addresses
Address parameters and connection types
With TCP, 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
Depending on the required connection type, the remote address parameters are either
specified or left open during configuration.
● Specified TCP connection
You specified a destination station when you created the connection.
● Unspecified TCP 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.
Ports
The ports or port addresses define the access point to the user program within the station /
CPU. They must be unique within the station / CPU!
The following table shows the range of values: