ABB AC 900F Mounting And Installation Instructions Manual page 107

Section 7 Commissioning
It is recommended to set IP addresses within the range specified below for the
Control Net.
The 255.255.255.255 broadcast address and the 0.0.0.0 address are special cases
and cannot be set.
Eth1 is designed to connect the controller with the Control Net. For this reason, this
interface must be enabled in any case and be provided with addresses.
Ethernet enabled.png
Eth2 can be freely used. However, if the controller is defined as redundant in the
Network menu, Eth2 is reserved for the redundancy link. The information
Redundancy Link will appear at the top of the display. In this case, the IP address
and the subnet mask cannot be set.
Ethernet_enabled-02.png
Eth3 can be freely used. If the controller will be connected to a Redundant Network
(redundant Control Net), Eth3 (line B) is required in addition to Eth1 (line A).
M&I – AC 900F Controller
IP address 172.16.[0 - 15].[0 - 255]
Subnet mask: 255.255.240.0
Boot configuration
107