Configuring Communication Connections
4.6.2Specifying TCP Addresses
Address Parameters and Connection Types
With TCP, the communication partners are addressed by the local and remote endpoints as follows:
SLocal addresses:
Local IP address and local port
SRemote addresses:
Remote IP address and remote port
Ethernet station A
Ethernet station B
remote |
| local |
port | TCP | port |
local | connection | remote |
| ||
port |
| port |
MAC |
| IP address |
address A |
| |
| B | |
|
|
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.
SSpecified TCP connection
You specified a destination station when you created the connection.
SUnspecified TCP connection
You entered “unspecified” for the connection partner when you created the connection.
122 | SIMATIC NET NCM S7 for Industrial Ethernet |