CV500ETN01 Omron, CV500ETN01 Datasheet - Page 122

• 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

Pairing IP Addresses with
FINS Node Addresses at
Local Nodes
Sending Ethernet Unit
FINS Messages
IP Addresses in FINS Communications
Application level
Transport level
Internet level
Physical level
Internal table
Remote FINS
node number
254
1
2
!
!
!
192.168.250.1
192.168.250.2
192.168.250.254
Ethernet V2
Remote IP
address (Example) Connection
FINS
UDP
IP
Ethernet
UDP
UDP
UDP
Remote port
number
(Example)
9600
9600
9600
FINS header
UDP port
number
Ethernet address
IP
Node number
A particular IP address is allocated to each communications node, including
Ethernet Units. The IP address must be paired with the FINS node address (1
to 254) by one of the following methods.
Automatic Generation Method (Dynamic/Static)
Set the relation between the IP address and the FINS node address for the
Ethernet Unit according to the following equation. If the setting does not con-
form to this equation, a setting error will be generated and the ERH indicator
will flash.
IP Address Table Method and Combined Method
With these methods, the IP address and the FINS node address for the Ether-
net Unit have no particular relationship. Set both the FINS node address and
the IP address so that they are not duplicated in the network.
When the Ethernet Unit sends a FINS message, it must determine the remote
node's IP address, UDP port number, and TCP port number. The relation-
ships between all addresses, such as remote FINS node addresses and IP
addresses, are managed by an internal table at the Ethernet Unit.
When the Ethernet Unit is turned ON or restarted, the internal table is gener-
ated automatically from the various settings that have been made. Depending
on the setting method used, data such as remote IP addresses are changed
dynamically. (Dynamic changes can be prohibited.)
1
2
to
254
IP address
Remote FINS node
FINS node address = IP address host number
TCP
address
UDP
FINS data
TCP port
number
FINS header
192.168.250.1
192.168.250.2
192.168.250.254
Remote IP address
(Example)
The remote node's IP address, UDP/TCP
method, UDP port number, and TCP port
number are calculated from the node
number in the FINS message, and an
Ethernet frame is generated.
FINS data
Application level
Transport level
Internet level
Physical level
UDP
UDP
UDP
Connection
FINS
UDP
IP
Ethernet
UDP port
number
9600
9600
9600
number (Example)
Ethernet address
Node number
IP address
Remote port
Remote node
Section 5-2
TCP
TCP port
number
97