ABB FMBT-21 User Manual page 27

Modbus/tcp adapter module
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No.
Name/Value
Description
04
IP configuration
Sets the method for configuring the IP address, subnet mask and
gateway address for the module.
0 = Static IP
Configuration will be obtained from
parameters 05...13.
1 = Dyn IP DHCP
Configuration will be obtained via DHCP.
05
IP address 1
An IP address is assigned to each IP node on a network. An IP ad-
dress is a 32-bit number that is typically represented in "dotted
decimal" notation consisting of four decimal integers, on the range
0...255, separated by periods. Each integer represents the value
of one octet (8- bits) in the IP address. Parameters 05...08 define
the four octets of the IP address.
0...255
IP address
...
...
...
08
IP address 4
See parameter 05 IP address 1.
0...255
IP address
09
Subnet CIDR
Subnet masks are used for splitting networks into smaller net-
works 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.
Dotted decimal
255.255.255.254
255.255.255.252
255.255.255.248
255.255.255.240
255.255.255.224
255.255.255.192
255.255.255.128
255.255.255.0
255.255.254.0
255.255.252.0
255.255.248.0
255.255.240.0
255.255.224.0
255.255.192.0
255.255.128.0
255.255.0.0
Modbus/TCP – Start-up 27
CIDR
Dotted decimal
31
255.254.0.0
30
255.252.0.0
29
255.248.0.0
28
255.240.0.0
27
255.224.0.0
26
255.224.0.0
25
255.128.0.0
24
255.0.0.0.0
23
254.0.0.0.0
22
252.0.0.0.0
21
248.0.0.0.0
20
240.0.0.0.0
19
224.0.0.0.0
18
192.0.0.0.0
17
128.0.0.0.0
16
Default
1 = Dyn IP
DHCP
0
0
0
CIDR
15
14
13
12
12
11
10
9
8
7
6
5
4
3
2
1

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