Table 74: Key Data Class A, B And C - WAGO -I/O-SYSTEM 750 Manual

WAGO-I/O-SYSTEM 750
750-882 Media Redundancy ETHERNET Controller
Therefore, the address range of Class C networks in the first byte is always
between 192 and 223.
• Additional network classes (D, E): are only used for special tasks.
Key Data

Table 74: Key Data Class A, B and C

Network Class
Class A
Class B
Class C
Each WAGO ETHERNET fieldbus coupler or controller can be easily assigned an
IP address via the implemented BootP protocol. For small internal networks we
recommend selecting a network address from Class C.
Do not set IP addresses to 0.0.0.0 or 255.255.255.255!
Never set all bits to equal 0 or 1 in one byte (byte = 0 or 255). These are
reserved for special functions and may not be allocated. Therefore, the address
10.0.10.10 may not be used due to the 0 in the second byte.
If a network is to be directly connected to the Internet, only registered,
internationally unique IP addresses allocated by a central registration service
may be used. These are available from InterNIC (International Network
Information Center).
Internet access only by the authorized network administrator!
Direct connection to the Internet should only be performed by an authorized
network administrator and is therefore not described in this manual.
Subnets
To allow routing within large networks a convention was introduced in the
specification RFC 950. Part of the Internet address, the subscriber ID is divided
up again into a subnetwork number and the station number of the node. With the
aid of the network number it is possible to branch into internal subnetworks within
the partial network, but the entire network is physically connected together. The
size and position of the subnetwork ID are not defined; however, the size is
dependent upon the number of subnets to be addressed and the number of
subscribers per subnet.
Address range of
the subnetwork
0.XXX.XXX.XXX ...
127.XXX.XXX.XXX
128.000.XXX.XXX ...
191.255.XXX.XXX
192.000.000.XXX ...
223.255.255.XXX
Fieldbus Communication 211
Possible number of
Networks
128
7
(2 )
Approx. 16 Thousand
14
(2 )
Approx. 2 Million
21
(2 )
Hosts per
Network
Approx. 16 Million
24
(2 )
Ca. 65 Thousand
16
(2 )
254
8
(2 )
Manual
1.5.0