Omron CS1W-ETN21 - Manual (Page 235)

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Troubleshooting Procedures Section 8-4
8-4-2 FINS Communications Problems (SEND(090)/RECV(098)/
CMND(490))
Go to Network
Connection Problems
N
Y
Y
N
N
Y
N
Y
Set both nodes to the same FINS network address.
N
N
N
Y
Y
Y N
Y
Y
FINS Communications Problems occurred.
Is the control data
for the instruction set
incorrectly?
Make sure that the FINS network address is not set to 0
for the Ethernet Unit and check the network address,
node number and unit address.
Is a CMND(194)
instruction being addressed
to the local node, e.g. for
socket services?
Are different UDP port
numbers set for FINS
communications for both
the local node and the
remote node?
Are the local and remote
nodes both on the same
network, i.e. do they have the
same network number in their
IP addresses?
Set the same port number for both nodes.
Is the IP address
of the remote node missing from
the IP address table?
IP routing must be used if the net ID of the IP address of the
local node and remote node. Set the IP address of the remote
node in the local IP address table. (Note: Use of the IP address
table must be set in the mode settings for the IP address table to
be effective.)
Set the IP address of the remote
node in the IP address table or use
automatic address conversion. Is the IP address
of the remote node
missing from the IP
router table?
Set the network number of the remote node in the IP
router table.
Are the FINS network
addresses of the local and
remote nodes different?
Are you attempting
a broadcast transmission?
Do not attempt to broadcast to a node with a different
network number. You can broadcast only to nodes on the
same IP network.
Are you attempting to
communicate with a PLC on
another network?
Are the routing
tables set improperly?
Y Set routing tables at the local node, target node, and any
relay nodes.
(Note: The automatic generation setting cannot be used alone.)
E N D
Refer to 8-5 Troubleshooting
with Response Codes and
remove any causes of the
problem discovered there
before proceeding with this
procedure.