Siemens Simantic Net NCM for Industrial Ethernet S7 - Manual (Page 122)

Configuring Communication Connections
122
SIMATIC NET NCM S7 for Industrial Ethernet
C79000-G8976-C129–06
4.6.2 Specifying TCP Addresses
Address Parameters and Connection Types
With TCP, the communication partners are addressed by the local and remote
endpoints as follows:
S
Local addresses:
Local IP address and local port
S Remote addresses:
Remote IP address and remote port
TCP
connection
MAC
address A
Ethernet station B Ethernet station A
IP address
B
remote
port
local
port
local
port
remote
port
Figure 4-18 Sending and Receiving on One TCP Connection
Depending on the required connection type, the remote address parameters are
either specified or left open during configuration.
S
Specified TCP connection
You specified a destination station when you created the connection.
S Unspecified TCP connection
You entered “unspecified” for the connection partner when you created the
connection.