Siemens SIMATIC ET 200AL System Manual page 1822

Distributed i/o system

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Make sure that duplicate IP addresses cannot be created on the subnet during the

assignment. The IO controller does not assign a new IP address in this case.

In the following figure, the device name "m1" and the IP address 192.168.1.10 have been

assigned to the IO controller of the first machine.

The device name "m2" and the IP address 192.168.1.20 has been assigned for the second

Refer to the figure for the resulting device names and IP addresses.

Set device name and IP address on the IO controller

After startup, the IO devices have an updated device name (<configured device name>.<device name of IO control-

ler>) and an adapted IP address (= <IP address of IO controller> + <device number>)

Example of the assignment of IP addresses and device names at "Multiple use IO system"

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