Siemens SIMATIC ET 200AL, System Manual

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Functions
5.10 Standard machine projects
PROFINET with STEP 7
Function Manual, 05/2021, A5E03444486-AL
257
Note
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
machine.
Refer to the figure for the resulting device names and IP addresses.
① Set device name and IP address on the IO controller
② 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>)
Figure 5-96 Example of the assignment of IP addresses and device names at "Multiple use IO system"
See also
Configuring multiple use IO systems (Page 1)