Omron CJ1W-EIP21 用户手册

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.

The 6

th

, 7

th

, and 15

th

 bits of the response codes have specific functions. The

6

th

 bit will be ON when a non-fatal error has occurred in the PLC at the remote

node; the 7

th

 bit will be ON when a fatal error has occurred in the PLC at the

remote node; and the 15

th

 bit will be ON when a network relay error has

occurred. The following table explains the meaning of the completion codes.

• When there is a high load in the tag data link, and the CPU 

Unit’s cycle time is relatively long or there are messages 
coming in from many nodes, the message service response 
time may be delayed and messages may be discarded occa-
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.

7

6

5

4

3

2

1

0

7

6

5

4

3

2

1

0

First byte

Second byte

Bit

PLC Fatal Error Flag

PLC Non-fatal Error Flag

Relay Error Flag

Main response code (RES)

Sub response code (SRES)

00

Normal 
completion

00

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