Omron SYSMAC CS1W-SCB41-V1 Operation Manual page 368

Troubleshooting
Serial Indicator
communi- display
cations
mode
Serial com- The SD@/
munica- RD@ and
tions mode COM@ indi-
is set to cators do
protocol not flash at
macro. all. (Com-
munica-
tions has
not been
electrically
estab-
lished.)
The SD@/
RD@ and
COM@ indi-
cators are
flashing, but
the Unit or
Board can-
not perform
communi-
cations.
Status Words allocated in
information, the CIO Area
etc.
Bit 15 (Protocol Bits 03 and 11 (Abort
Macro Execut- Switch) of the words
ing Flag) of the allocated in the CIO
words allocated Area n are force-set.
in the CIO Area
n+9/n+19
momentarily
turns ON when
the PMCR(260)
instruction is
executed, but it
cannot remain
ON.
Send data has ---
already been
transmitted, but
there is no
response from
the remote
node.
Bit 10 The sequence is
(Sequence aborted (the step is
Abort End Flag) interrupted).
of the Protocol
words allocated
in the CIO Area
n+9/n+19 is set
to ON.
Bit 15 (Protocol The sequence is run-
Macro Execut- ning and does not
ing Flag) of the end (the words allo-
words allocated cated in the CIO
in the CIO Area Area is in receive
n+9/n+19 status).
remains ON
when the
PMCR(260)
instruction is
executed with-
out setting the
monitoring time
in sequence
units.
Cause
Abort Switch is force-set. Release the forced or
This is a hardware error.
Protocol macro data is
not set correctly.
The Setup Area settings
such as the baud rate
and frame format differ
from those of the remote
node.
Section 11-3
Remedy
Abort Switch.
Set bits 11 to 08 (Serial
Communications Mode)
of the Allocation DM Area
to F Hex (Loopback Test
Serial Communications
Mode), connect the con-
nector wired for a loop-
back test, then conduct a
loopback test by turning
ON bit 14 of word n. The
test data is reflected in
the Allocation DM Area
n+9/n+19. If an error
occurs during the test,
replace the Board or Unit.
Use CX-Protocol trans-
mission line trace to
check whether the proto-
col data and Setup Area
settings are correct.
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