Omron CS1W-ETN21 - Manual (Page 248)

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Troubleshooting with Response Codes Section 8-5
8-5 Troubleshooting with Response Codes
You can troubleshoot the errors in FINS communications from the response
codes when the SEND(090), RECV(098), or CMND(490) instructions have
been used. For the storage areas of the response codes refer to information
on page 141 under 6-6-4 Writing Programs.
The table below lists response codes (main and sub-codes) returned after
execution of FINS commands, the probable cause of errors, and recom-
mended remedies. The response codes provided here are for the Ethernet
Unit. Refer to the FINS Command Reference Manual (W227) or the operation
manuals for the relevant Unit for further information on response codes.
The 6th, 7th, and 15th bits of the response codes have specific functions. The
6th bit will be ON when a non-fatal error has occurred in the PC at the remote
node; the 7th bit will be ON when a fatal error has occurred in the PC at the
remote node; and the 15th bit will be ON when a network relay error has
occurred. Refer to information given after the following table for more informa-
tion on relay errors.
7 Bit 6 5 4 3 2 1 0
1: PLC non-fatal error flag 1: PLC fatal error flag
1: Relay error flag
First byte
7 6 5 4 3 2 1 0
Second byte
Main response code (MRES) Sub-response code (SRES)
Main code Sub-code Check point Probable cause Remedy
00: Normal
completion 00 --- --- ---
01: Local
node error 03: Local node
send error --- Send error in local node was
caused by lack of available
space in internal buffers. Reduce the load (traffic) on the
Ethernet Unit. Check your user
applications.
05: Node address
setting error Local IP address The network cannot be
accessed because the IP
address setting is not correct. Correct the local IP address.
07: Local node
busy, cannot
send System load The internal buffers are full
because there is too much traf-
fic at the local node, preventing
data from being sent. Correct the user application to
reduce traffic at the Ethernet
Unit.
02: Remote
node error 01: Remote node
not in network IP address table,
IP router table IP address of remote node not
set correctly in IP address table
or IP router table. Set IP address of remote node
into IP address table and, if inter-
network transmission is required,
into the IP router table.
02: No such Unit Control data in
instruction No node with the specified unit
address. Check the remote node’s unit
address and make sure the cor-
rect one is being used in the con-
trol data.
05: Response
timeout Response to
CONTROLLER
STATUS READ
and PROTOCOL
STATUS READ
FINS command Message packet was corrupted
by transmission error. Check the protocol and controller
status by reading them with FINS
commands. Increase the num-
ber of transmit retry attempts.
Control data in
instruction Response time-out, response
watchdog timer interval too
short. Increase the value for the
response monitor time in the
control data.
Read error log The transmission frame may
be corrupted or the internal
reception buffer full. Read out the error log and cor-
rect as required.