Troubleshooting According To Response Codes - Omron CS1W-FLN22 Operation Manual

Troubleshooting Procedures

10-4-7 Troubleshooting According to Response Codes

Main response Sub-response code
code
Value Meaning Value
00 Normal 00
completion
01 Local node 01
error
04
07
158
No.
12 The regular communications of the entire system are affected by the pro-
cessing capacity of connected devices. Perform communications using the
communications processing speed for all devices connected to the network
that matches the communications processing capacity (minimum allowable
frame interval) of the slowest device. Therefore, the realtime performance
for the entire system may be greatly reduced by adding devices to the net-
work.
13 The header section of message data is big endian, but the data is little
endian. The system parameters in the data of transparent messages and
profile read data, however, is big endian. (Big endian data indicates a trans-
mission method that sends the MSB first).
You can troubleshoot the errors in FL-net communications from the response
codes when the SEND(090), RECV(098), or CMND(490) instructions have
been used. For the storage areas of response codes for SEND(090),
RECV(098), and CMND(490) instructions, refer to Communications Port
Completion Codes on page 101 in 7-2 Sending Commands from a PLC.
The table below lists response codes (main and sub-codes) returned for the
FL-net Unit. Refer to the relevant operation manuals for information on
response codes for the CPU Unit, other CPU Bus Units, or FA computers
using FINS communications.
The 6th, 7th, and 15th bits of the response codes have specific functions. The
15th bit will be ON when a network relay error has occurred. Refer to informa-
tion given after the following table for more information on relay errors. The 6th
bit or 7th bit will be ON when an error has occurred in the destination CPU
Unit. Remove the cause of the error at the destination CPU Unit, referring to
the operation manual for the CPU Unit. The meaning of the response codes
are shown below.
First byte
Bit
Main response code (MRES)
1: PLC Fatal Error Flag
1: Network Relay Error Flag
Check point
Meaning
--- ---
Local node Local IP
not in net- address, node
work number
Reception System load
buffer over-
flow
(receiving
node)
Local node System load
busy, can-
not send
Details
Second byte
Sub-response code (SRES)
1: PLC Non-fatal Error Flag
Probable cause
---
Message cannot be sent
because the node is not
participating in the net-
work.
No available space n
internal buffer of receiv-
ing node.
The internal buffers are
full because there is too
much traffic at the local
node, preventing data
from being sent.
Section 10-4
Remedy
---
Correct the local IP address
and node number.
Correct the user application to
reduce the load (traffic) at the
FL-net Unit.
Correct the user application to
reduce the load (traffic) at the
FL-net Unit.