Omron SYSMAC CJ1W-SCU21-V1, Operation Manual

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323
Troubleshooting Section 11-3
Response Received from Remote Device but Error Remains
Error conditions Cause Remedy
Board/Unit
status
Serial com-
munica-
tions mode
Indicator
display
FINS end
code sent
to FINS
transmis-
sion source
Words allo-
cated in
CIO Area
A normal
FINS end
code is
returned
from the
remote
device, but
there is no
response
data after
the end
code. The serial
communica-
tions mode
is set to
Serial Gate-
way or pro-
tocol macro
mode. The RD @/
SD @ and
COM @ indi-
cators all
flash.
0000 hex --- The FINS command
requires a
response, but the
command after con-
version does not
require a response
(e.g., broadcasting) Check the specifications of
the command to be con-
verted.
A response
was
received
from the
remote
device after
a response
timeout error
was
received for
a converted
command
that was
sent to the
remote
device. 0205 hex
(response
timeout),
etc. Bit 05 of CIO
word n+8/
n+18 (Serial
Gateway
send start
timeout or
Serial Gate-
way
response
timeout) is
ON. A Serial Gateway
response timeout
occurred, but the
response data was
received normally
after the timeout.
This is a result of
the Serial Gateway
response timeout
monitoring time set-
ting in DM Area
word m+7/m+17
being too short. Set a longer time for the
Serial Gateway response
timeout monitoring time in
DM Area word m+7/m+17.
A FINS error
end code
was
returned to
the FINS
transmis-
sion source. 0206 hex
(transmis-
sion error) CIO word
n+8/n+18 bit
07 (FCS
check error)
or bit 02
(parity error)
is ON. Either of the follow-
ing errors occurred
in the protocol after
conversion.
Conversion to Com-
poWay/F com-
mand: BCC error or
parity error
Conversion to Mod-
bus-RTU command:
CRC error or parity
error
Conversion to Mod-
bus-ASCII com-
mand: CRC error or
checksum error
Conversion to Host
Link FINS com-
mand: FCS error or
parity error
Use shielded twisted-pair
cables.
Lay power lines separately
using ducts.
Increase the number of
resends at the FINS trans-
mission source.
Perform communications
retry as required.
Other FINS
error end
code --- The Serial Gate-
way was executed,
but the FINS error
completion
occurred. Perform error processing
based on the following
table of FINS end codes.