Specifying Tcp Addresses - Siemens SIMATIC NET S7-300 Manual

5 Configuring Communication Connections
Connection Name (Reference) - Only in Multiproject
If you create a connection to a partner in another project, that has not yet been
merged with the current multiproject, you must enter a connection name as
reference. Interproject connections can then be joined up based on this reference.
As soon as the connections have been brought together, the connection name
(reference) can no longer be entered.
5.6.2

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
Ethernet station A
Figure 5-15 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.
A -134
remote
port
TCP
connection
local
port
MAC
address A
S7-CPs for Industrial Ethernet Configuring and Commissioning
Ethernet station B
local
port
remote
port
IP
address B
C79000-G8976-C182-07
Release 01/2007