Siemens SIMATIC NET S7-300 Manual page 135

Addresses Tab - Specified TCP Connection
The addresses tab displays proposed values for the relevant local and remote
address information. You can change the port settings individually.
Figure 5-16 Layout of the Properties Dialog in the "Addresses" tab with DEFAULT Ports for TCP
Connections
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:
Table 5-4
Fixed, must not be used!
Assigned as default, should not be used (well-known ports)
S7-CPs for Industrial Ethernet Configuring and Commissioning
Release 01/2007
C79000-G8976-C182-07
5 Configuring Communication Connections
Application / Note Port Addresses
0
1 to 1024
A -135