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339
Troubleshooting
Section 11-3
Serial com-
munica-
tions mode
is set to
protocol
macro.
The SD
@
/
RD
@
and
COM
@
indi-
cators do
not flash at
all. (Com-
munica-
tions has
not been
electrically
estab-
lished.)
Bit 15 (Protocol
Macro Execut-
ing Flag) of the
words allocated
in the CIO Area
n+9/n+19
momentarily
turns ON when
the PMCR(260)
instruction is
executed, but it
cannot remain
ON.
Bits 03 and 11 (Abort
Switch) of the words
allocated in the CIO
Area n are force-set.
Abort Switch is force-set.
Release the forced or
Abort Switch.
Send data has
already been
transmitted, but
there is no
response from
the remote
node.
---
This is a hardware error.
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.
The SD
@
/
RD
@
and
COM
@
indi-
cators are
flashing, but
the Unit or
Board can-
not perform
communi-
cations.
Bit 10
(Sequence
Abort End Flag)
of the Protocol
words allocated
in the CIO Area
n+9/n+19 is set
to ON.
The sequence is
aborted (the step is
interrupted).
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.
Use CX-Protocol trans-
mission line trace to
check whether the proto-
col data and Setup Area
settings are correct.
Bit 15 (Protocol
Macro Execut-
ing Flag) of the
words allocated
in the CIO Area
n+9/n+19
remains ON
when the
PMCR(260)
instruction is
executed with-
out setting the
monitoring time
in sequence
units.
The sequence is run-
ning and does not
end (the words allo-
cated in the CIO
Area is in receive
status).
Serial
communi-
cations
mode
Indicator
display
Status
information,
etc.
Words allocated in
the CIO Area
Cause
Remedy
Summary of Contents for SYSMAC CJ1W-SCU21-V1
Page 3: ...iv...
Page 5: ...vi...
Page 9: ...x...
Page 15: ...xvi...
Page 89: ...60 Basic Operating Procedure Section 1 9...
Page 151: ...122 RS 232C and RS 422A 485 Wiring Section 3 4...
Page 173: ...144 Host Link Function for Replacing Existing PLCs Section 4 6...
Page 223: ...194 Enhanced Protocol Macro Functions Section 5 6...
Page 277: ...248 Communications Frames Section 6 8...
Page 291: ...262 Basic Operating Procedure in No protocol Mode Section 7 4...
Page 301: ...272 Auxiliary Area and CIO Area Allocations Section 8 3...
Page 391: ...362 Introduction Appendix A...
Page 421: ...392 CompoWay F Master Protocol Appendix B...
Page 513: ...484 E5 K Digital Controller Read Protocol Appendix F...
Page 571: ...542 E5ZE Temperature Controller Write Protocol Appendix I...
Page 587: ...558 E5 J Temperature Controller Protocol Appendix J...
Page 627: ...598 ES100 Digital Controller Protocol Appendix K...
Page 661: ...632 V500 V520 Bar Code Reader Protocol Appendix M...
Page 697: ...668 3Z4L Laser Micrometer Protocol Appendix N...
Page 717: ...688 Visual Inspection System Protocol Appendix O...
Page 755: ...726 V600 V620 ID Controller Protocol Appendix P...
Page 763: ...734 Hayes Modem AT Command Protocol Appendix Q...
Page 767: ...738 Changing Communications Port Settings Using STUP 237 Appendix R...
Page 781: ...752 Revision History...