Omron SYSMAC CS1W-ETN21 Operation Manual page 122

IP Addresses in FINS Communications
Pairing IP Addresses with
FINS Node Addresses at
Local Nodes
Sending Ethernet Unit
FINS Messages
• FINS/UDP port number: Either use the default FINS/UDP port number
• FINS/TCP port number: Either use the default FINS/TCP port number
• FINS node address:
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.
FINS node address = IP address host number
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.
Remote FINS node Remote IP address
address
1 192.168.250.1
2 192.168.250.2
to
254 192.168.250.254
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.)
(9600) or set the number using the CX-Program-
mer's Unit Setup.
(9600) or set the number using the CX-Program-
mer's Unit Setup.
Set the number using the NODE NO. rotary
switch on the front of the Ethernet Unit.
Connection
(Example)
UDP
UDP
UDP
Section 5-2
Remote port
number (Example)
9600
9600
9600
97