Troubleshooting With Fins Response Codes; Message Timeout Problems - Omron SYSMAC CJ1W-EIP21 Operation Manual

Troubleshooting with FINS Response Codes

14-5-5 Message Timeout Problems

14-6 Troubleshooting with FINS Response Codes

Main response Sub response code
code
Value and Value and meaning
meaning
00 Normal 00 ---
completion
Timeout errors • When there is a high load in the tag data link, and the CPU
occur frequently in Unit's cycle time is relatively long or there are messages
message services coming in from many nodes, the message service response
time may be delayed and messages may be discarded occa-
(CIP UCMM, CIP
Class 3, or FINS). sionally.
• In this case, the communications load must be reduced by
increasing (slowing) the tag data link's RPI, reducing the
message load, or increasing the timeout value.
• The tag data link's bandwidth usage can be checked on the
Monitor Device Window's Ethernet Information Tab Page.
Refer to 14-1 Checking Status with the Network Configurator
for details.
• The error log error codes that indicate discarded messages
(insufficient memory) due to heavy communications loads
are 0117, 0119, 0123, 0125, 03C2 (detail code @@08,
@@09, or @@0A), 03C3, and 03D2. Refer to 14-1 Checking
Status with the Network Configurator for details on reading
the error codes on the Error History Tab Page.
• For information on preventing high loads in FINS communi-
cations, refer to 8-7 Precautions on High Traffic in FINS
Communications.
The cause of errors that occur when using the SEND(090), RECV(098), or
CMND(490) instructions can be identified from the response codes. (Refer to
the description of Communications Port Completion Codes in 8-6-4 Writing
Programs for the storage locations of response codes generated by the
SEND(090), RECV(098), or CMND(490) instructions.)
This section describes the completion codes produced by EtherNet/IP Units.
For details on completion codes produced by CPU Units, other CPU Bus
Units, or computers equipped with FINS services, refer to the device's opera-
tion manual.
th th th
The 6 , 7 , and 15 bits of the response codes have specific functions. The
th
6 bit will be ON when a non-fatal error has occurred in the PLC at the remote
th
node; the 7 bit will be ON when a fatal error has occurred in the PLC at the
remote node; and the 15
occurred. The following table explains the meaning of the completion codes.
First byte
Bit 7 6 5 4 3 2 1 0
Main response code (RES)
PLC Fatal Error Flag
Relay Error Flag
Item to check
---
th
bit will be ON when a network relay error has
Second byte
7 6 5 4 3 2 1 0
Sub response code (SRES)
PLC Non-fatal Error Flag
Likely cause
---
Section 14-6
Corrective action
---
371