Omron SYSMAC CS1W-ETN21 Operation Manual page 129

IP Addresses in FINS Communications
Personal computer or
Ethernet Unit (client)
Local FINS node number A
Local IP address T
The FINS node number
is converted for each
connection number.
Setting FINS/TCP
Connections
1,2,3...
1,2,3...
104
(1) The connection is established.
(2) The local device (such as a personal
computer) sends notification that its
FINS node number is A.
IP address
FINS node number transmission
IP address FINS node number transmission
(3) The Ethernet Unit sends notification
that its FINS node number is B.
(4) The internal node correspondence
table is changed.
(5) It then becomes possible to send
and receive FINS messages.
The procedure for setting FINS/TCP connections involves the items described
below. The settings are made individually for each connection (numbers 1 to
16) under FINS/TCP settings in the Unit Setup.
Local Device Is Server
1. Set the server.
2. Set IP addresses for connected devices.
If the option for protection by IP addresses is checked, set the IP address-
es for clients where connections are permitted. (This can be omitted.)
3. Automatic FINS node address allocation:
If the client (generally a personal computer) supports FINS/TCP, and if it is
to be used without setting a FINS node address, the value set here (from
239 to 254) can be allocated to the client.
Functions related to these settings are explained in detail in the Operation
Manual Construction of Applications, SECTION 7 Using FINS Communi-
cations to Create Host Applications. The default settings should normally
be used.
Local Device Is a Client
1. Set the client.
2. Set the IP addresses for the connection destination.
Set the IP address for the remote Ethernet Unit (i.e., the server) connected
by FINS/TCP.
This setting must be made if this Ethernet Unit is to be used as a FINS/
TCP client.
Ethernet Unit (server) CPU Unit
Local FINS node number B
Local IP address S
Ethernet
Section 5-2