252 PROFINET IO – Start-up
09 SUBNET CIDR Subnet masks are used for splitting networks
into smaller networks called subnets. A subnet
mask is a 32-bit binary number that splits 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, as shown in the table
below.
0
ACS355:
FB PAR 9
ACSM1:
FBA PAR9
ACS850/ACQ810:
FBA par9
ACS880/ACS580:
Subnet CIDR
1…31 Subnet mask in CIDR notation
10 GW ADDRESS 1 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. Parameters
10…13 define the four octets of the gateway
address.
0
ACS355:
FB PAR 10
ACSM1:
FBA PAR10
ACS850/ACQ810:
FBA par10
ACS880/ACS580:
GW address 1
0…255 GW address
No. Name/Value Description Default
Dotted decimal CIDR Dotted decimal CIDR
255.255.255.254 31 255.254.0.0 15
255.255.255.252 30 255.252.0.0 14
255.255.255.248 29 255.248.0.0 13
255.255.255.240 28 255.240.0.0 12
255.255.255.224 27 255.224.0.0 11
255.255.255.192 26 255.224.0.0 10
255.255.255.128 25 255.128.0.0 9
255.255.255.0 24 255.0.0.0 8
255.255.254.0 23 254.0.0.0 7
255.255.252.0 22 252.0.0.0 6
255.255.248.0 21 248.0.0.0 5
255.255.240.0 20 240.0.0.0 4
255.255.224.0 19 224.0.0.0 3
255.255.192.0 18 192.0.0.0 2
255.255.128.0 17 128.0.0.0 1
255.255.0.0 16
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