Siemens SIMATIC MV500 Operating Instructions Manual page 142

Commissioning
7.6 Selecting connection alternatives
NOTICE
Setting the IP address for "X2 LAN2"
Note that you can only set the IP address for the "X2 LAN2" interface via the WBM.
NOTICE
Ethernet interfaces in different subnets
Note that you must operate the Ethernet interfaces "X1 LAN1" and "X2 LAN2" in two
different subnets. If you do not comply, you cannot save the changes in the WBM, or if you
use SINEC PNI, the IP address of the "X2 LAN2" interface is discarded.
142
Operating Instructions, 03/2021, C79000-G8976-C494-05
SIMATIC MV500