CV500ETN01 Omron, CV500ETN01 Datasheet - Page 119

• Manufacturer Part Number: CV500ETN01
• Description: Programmable Logic Controller
• Manufacturer: Omron

Specifications of CV500ETN01

• Peak Reflow Compatible (260 C): No
• Leaded Process Compatible: No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

IP Addresses
5-1
5-1-1
5-1-2
94
IP Addresses
IP Address Configuration
Allocating IP Addresses
Class A
Class B
Class C
Class D
Class E
Bit 31
Bit 31
Bit 31
Bit 31
Bit 31
0
1
1 1
1
1
Note
Network number (7 bits)
0
0
1
1
Network number (14 bits)
0
1
Ethernet networks use IP addresses for communications. IP addresses iden-
tify both the Ethernet network and the node (host computer, Ethernet Unit,
etc.). IP addresses must be set and controlled so that they are not duplicated.
IP addresses are made up of 32 bits of binary data divided into four 8-bit fields
called octets. These four octets provide the network number (net ID) and host
number (host ID). The network number identifies the network, and the host
number identifies the node (or host) on the network.
The network numbers in an IP address are divided into three classes, A, B,
and C, so that the address system can be selected according to the scale of
the network. (Classes D and E are not used.) The configuration of the IP
address for each of these classes is shown in the following diagram.
The number of networks in each class and the number of nodes possible on
the network differ according to the class.
The 32 bits of an IP address are divided into four sections of eight bits each,
and expressed as a punctuated number. IP addresses are represented by the
decimal equivalent of each of the four octets in the 32-bit address, each sepa-
rated by a period. For example, the binary address 10000010 00111010
00010001 00100000 would be represented as 130.58.17.32.
The same network number must be set for every node on the same Ethernet
network.
IP (Internet Protocol) is a standard communications protocol used throughout
the world, and is designed to enable communications between any Ethernet
nodes regardless of the networks on which they exist. To achieve this, net-
work numbers are allocated by the Network Solutions, InterNIC Registration
Services, to ensure that all Ethernet networks have unique numbers regard-
less of where they exist. The local system administrator is left the responsibil-
ity of allocating unique host numbers locally. You therefore should obtain a
network number from the InterNIC Registration Services to ensure unique-
ness and allow for future network expansions if required.
Network number (21 bits)
Class A
Class B
Class C
Class
23
Identification address
Multicast address
15
Small
Medium
Large
Host number (24 bits)
Host number (16 bits)
Number of networks
7
Host number (8 bits)
0
0
0
0
0
(Cannot be used.)
(Cannot be used.)
2
2
2
24
16
8
2 max. (254 max.)
2 max. (16,777,214 max.)
2 max. (65,534 max.)
Number of hosts
Section 5-1