Troubleshooting With Response Codes - Omron CS Series Operation Manual

Troubleshooting Procedures
8-4-7

Troubleshooting with Response Codes

Main code Sub-code
00: Normal 00
completion
01: Local 03: Local node
node error send error
05: Node address
setting error
07: Local node
busy, cannot
send
02: Remote 01: Remote node
node error not in network
02: No such Unit
05: Response
timeout
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 143 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.
Bit 7 6 5
Main response code (MRES)
1: PLC fatal error flag
1: Relay error flag
Check point
--- ---
--- Send error in local node was
caused by lack of available
space in internal buffers.
Local IP address The network cannot be
accessed because the IP
address setting is not correct.
System load The internal buffers are full
because there is too much traf-
fic at the local node, preventing
data from being sent.
IP address table, IP address of remote node not
IP router table set correctly in IP address table
or IP router table.
Control data in No node with the specified unit
instruction address.
Response to Message packet was corrupted
CONTROLLER by transmission error.
STATUS READ
and PROTOCOL
STATUS READ
FINS command
Control data in Response time-out, response
instruction watchdog timer interval too
short.
Read error log The transmission frame may
be corrupted or the internal
reception buffer full.
First byte Second byte
4 3 2 1 0 7 6 5 4
Sub-response code (SRES)
1: PLC non-fatal error flag
Probable cause
---
Reduce the load (traffic) on the
Ethernet Unit. Check your user
applications.
Correct the local IP address.
Correct the user application to
reduce traffic at the Ethernet
Unit.
Set IP address of remote node
into IP address table and, if inter-
network transmission is required,
into the IP router table.
Check the remote node's unit
address and make sure the cor-
rect one is being used in the con-
trol data.
Check the protocol and controller
status by reading them with FINS
commands. Increase the num-
ber of transmit retry attempts.
Increase the value for the
response monitor time in the
control data.
Read out the error log and cor-
rect as required.
Section 8-4
3 2 1 0
Remedy
227