ABB FENA-01 Protocol Manual page 17

9 SUBNET CIDR
Subnet masks are used for splitting networks into smaller
networks called subnets. A subnet mask is a 32-bit binary number
that is used to split the IP Address into a network address and
host address. Subnet masks are typically represented in either
dotted-decimal notation or the more compact CIDR notation.
10 GW ADDRESS 1
11 GW ADDRESS 2
12 GW ADDRESS 3
13 GW ADDRESS 4
IP gateways connect individual physical IP subnets into a unified
IP network. When an IP node needs to communicate with an IP
node on another subnet, the IP node sends the data to the IP
gateway for forwarding. These parameters define the four octets
of the gateway address.
Dotted Decimal
255.255.255.254 31
255.255.255.252 30
255.255.255.248 29
255.255.255.240 28
255.255.255.224 27
255.255.255.192 26
255.255.255.128 25
255.255.255.0 24
255.255.254.0 23
255.255.252.0 22
255.255.248.0 21
255.255.240.0 20
255.255.224.0 19
255.255.192.0 18
255.255.128.0 17
255.255.0.0 16
CIDR Dotted Decimal
255.254.0.0
255.252.0.0
255.248.0.0
255.240.0.0
255.224.0.0
255.224.0.0
255.128.0.0
255.0.0.0
254.0.0.0
252.0.0.0
248.0.0.0
240.0.0.0
224.0.0.0
192.0.0.0
128.0.0.0
17
CIDR
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
Drive configuration