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Network Settings; Fast Ethernet; Ip Configuration; Points To Note About Ip Configuration - Siemens CM 1542-1 Operating Instructions Manual

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Configuration, programming

4.2 Network settings

4.2
Network settings
4.2.1

Fast Ethernet

Automatic setting
Only "Automatic" for automatic detection and "TP 100 Mbps full duplex" can be set for the
transmission rate of the connection.
The Ethernet interface of the CM is set to autosensing as default.
Note
In normal situations, the basic setting ensures troublefree communication.
Autocrossing mechanism
With the integrated autocrossing mechanism, it is possible to use a standard cable to
connect the PC/PG. A crossover cable is not necessary.
Note
Connecting a switch
To connect a switch, that does not support the autocrossing mechanism, use a crossover
cable.
4.3

IP configuration

4.3.1

Points to note about IP configuration

Configured S7 and OUC connections cannot be operated if the IP address is assigned using DHCP
Note
If you obtain the IP address using DHCP, any S7 and OUC connections you may have
configured will not work. Reason: The configured IP address is replaced by the address
obtained via DHCP during operation.
30
Operating Instructions, 07/2019, C79000-G8976-C355-04
CM 1542-1

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