Omron CS Series User Manual

96
IP Addresses in FINS Communications Section 5-2
component and host ID component. Because CIDR does not use a class, it is
possible to divide the IP address space as desired, which enables efficient
use of IP address space (i.e., number of hosts). For example, it is possible to
build a horizontally distributed network exceeding 254 nodes by setting a net-
work mask using CIDR even if class C (192.168, . . .) is used.
5-2 IP Addresses in FINS Communications
5-2-1 Specifying Nodes in FINS Communications Services
With FINS communications services on an Ethernet network, IP addresses,
UDP port numbers, and TCP port numbers are paired with FINS node
addresses to specify nodes on the network.
Note Use the “Node No.” rotary switch on the front of the Ethernet Unit to set the
FINS node address.
Allocating Addresses to Ethernet Units
Ethernet Unit FINS
Message Reception
The IP address, FINS/UDP port number, and FINS/TCP port number set for
the Ethernet Unit are mainly used when receiving FINS communications mes-
sages.
• Ethernet address: A fixed number is assigned to each Ethernet Unit
and it cannot be changed.
• IP address: Either use the default IP address
(192.168.250.FINS_node number), or set the
address in the word allocated in the DM Area or
in the Unit Setup from the CX-Programmer.
Subnet mask range
192.0.0.0 to 255.255.255.252
Application level
Transport level
Internet level
Physical level
FINS
UDP
IP
Ethernet
Node number
UDP port
number
TCP port
number
TCP
IP address
Ethernet address
Must be allocated.
Automatically allocated
Application level
Transport level
Internet level
Physical level
FINS
UDP
IP
Ethernet
TCP
Node number
UDP port
number
TCP port
number
IP address
Ethernet address
Receives communications data
conforming to Ethernet address,
IP address, UDP port number,
and FINS node number.
FINS header
FINS dataEthernet V2 IP UDP

Omron CS Series Specifications

General

Brand	Omron
Model	CS Series
Category	Network Hardware
Language	English