Omron SYSMAC CS1W-SCB41-V1 Operation Manual page 348

Troubleshooting
Board/Unit Serial commu-
status nications mode
The Board/ The serial com-
Unit cannot munications
convert the mode is set to
received (via Serial Gateway
CPU bus) or protocol
FINS com- macro mode.
mand into
either of the
protocols.
The serial com-
munications
mode is set to
Serial Gateway
or protocol
macro mode
Error conditions
Indicator FINS end
display code sent to
FINS trans-
mission
source
The SD@/ 0205 hex
RD@ and (response
COM@ indi- timeout), etc.
cators do not
flash at all.
(Communica-
tions have
not been
electrically
established.)
The SD@ and 0202 hex (no
COM@ indi- Unit)
cators do not
or
flash.
0401 hex
(undefined
command)
The SD@ and 2605 hex
COM@ indi- (service exe-
cators do not cuting)
flash at all.
Cause
Words allo-
cated in CIO
Area
--- A hardware
error has
occurred.
--- The FINS
destination
address is
not specified
correctly.
--- The serial
port received
a sixth FINS
command
when five
FINS com-
mands are
already wait-
ing.
Section 11-3
Remedy
Conduct a loopback test
in serial communications
mode to check the trans-
mission lines. If an error
occurs during the test,
replace the Board or
Unit.
Correct the FINS desti-
nation address specifica-
tion, and then resend the
FINS message. (Refer
particularly to 6-7 Condi-
tions Requiring Routing
Tables.)
Include retry processing
at the FINS command
transmission source for
when the FINS response
code 2605 hex is
received.
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