CV500ETN01 Omron, CV500ETN01 Datasheet - Page 129
CV500ETN01
Manufacturer Part Number
CV500ETN01
Description
Programmable Logic Controller
Manufacturer
Omron
Datasheet
1.CV500ETN01.pdf
(285 pages)
Specifications of CV500ETN01
Peak Reflow Compatible (260 C)
No
Leaded Process Compatible
No
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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IP Addresses in FINS Communications
5-2-3
Responding to Computers with Changed IP Addresses
FINS/UDP
Communications Method
FINS/TCP
Communications Method
104
Application Examples
Note
With FINS/UDP, whether using the automatic conversion method (dynamic),
the IP address table method, or the combined method, remote FINS node
addresses and remote IP addresses in the internal table are changed after
FINS messages are received. Therefore, even when a FINS command has
been received from a personal computer (a DHCP client computer) for which
the IP address is dynamically changed, a response can still be sent back to
the computer (the DHCP client computer) from which the command origi-
nated.
With FINS/TCP, FINS node addresses and IP addresses in the internal table
are changed with each connection that is established. Therefore, even when a
FINS command has been received from a personal computer (a DHCP client
computer) for which the IP address is dynamically changed, a response can
still be sent back to the computer (the DHCP client computer) from which the
command originated.
Automatic IP Address Setting by DHCP Service
DHCP service is a method whereby a DHCP server collectively manages all
of the IP address in a network.
Nodes that are functioning as clients acquire IP addresses from the DHCP
server whenever the system is started. Therefore, at a personal computer
using the DHCP service, IP addresses may be different with each system
startup.
DHCP service is mainly used for automatic settings in devices such as per-
sonal computers that are used for client applications. Nodes used for server
Personal computer (client)
Personal computer (client)
Response sent back to
changed IP address
Response sent back to
changed IP address
IP address
IP address
IP address changed
(acquired from DHCP server when connected)
IP address changed
(acquired from DHCP server when connected)
IP address
IP address
FINS command sent
FINS command sent
FINS response
FINS response
FINS command
FINS command
Ethernet Unit
(FINS/TCP server; with
fixed IP address)
Ethernet Unit
(with fixed IP address)
Ethernet
Ethernet
Section 5-2
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