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Procedure Before Using FINS Communications
Section 5-2
5-2
Procedure Before Using FINS Communications
Note The location of the local IP address setting depends on the type of CPU Unit
in the following way.
CS Series: Rotary switches on back of Ethernet Unit.
CJ Series: CPU Bus Unit System Setup or allocated words in the DM Area.
Start
Determine the address conversion 
method for the destination IP address.
Automatic Generation
Automatically converted from 
FINS node number.
IP Address Table
Converted from table of corre-
spondences between FINS node 
numbers and IP addresses.
Combined Method
IP address table is referenced; 
if IP address is not registered, 
then it is converted from FINS 
node number.
Set the IP address (see note) so
that the host number's least
significant byte = the FINS node
number.
 
Select the IP table address 
method for the address conver-
sion method in the System Set-
up, and create an IP address 
table.
Select the combined method for 
the address conversion method 
in the System Setup, and create 
an IP address table.
Determine the FINS UDP port number.
Is the FINS UDP port number 
other than 9600?
Yes
No
In the System Setup, select 
"user-defined" as the method 
for specifying the FINS UDP 
port number.
Set the FINS UDP port number 
for all Ethernet Units on the 
Ethernet network to the default 
of 9600.
Set the FINS UDP port numbers 
for all of the Ethernet Units on 
the Ethernet network to the 
same value.
Determine the network configuration.
Communications with PC on local network
Communications with PC on another 
network (such as Controller Link)
The only Communications Units 
mounted are Ethernet Units.
Communications Units other than 
Ethernet Units are also mounted.
Routing table settings are not 
required.
Use the CX-Programmer to set 
the local network table at the 
CPU Unit.
Use the CX-Programmer to set 
the local network table and the 
relay network table at the CPU 
Unit.
Create a user program for issuing 
FINS messages by SEND(090), 
RECV(098), and CMND(490).