Siemens Simantic Net NCM for Industrial Ethernet S7 - Manual (Page 95)

Configuring Communication Connections
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SIMATIC NET NCM S7 for Industrial Ethernet
C79000-G8976-C129–06
The free UDP connection is another variant. With this type of connection, the
address of the connection partner is left open during configuration. The
communication nodes are identified by address information in the communication
job in the user program.
For further information, refer to the sections dealing with specific connections.
Notice
The number of connections possible per Ethernet CP can be found in the manual
/1/supplied with the CP. If several CPs are installed in one station, the next CP is
automatically selected if the limit is exceeded. The connections can be routed in
the Properties dialog of the connection.