![background image](http://html1.mh-extra.com/html/omron/sysmac-cj1w-scu21-v1/sysmac-cj1w-scu21-v1_operation-manual_743586348.webp)
319
Troubleshooting
Section 11-3
The Board/
Unit cannot
convert the
received (via
CPU bus)
FINS com-
mand into
either of the
protocols.
The serial com-
munications
mode is set to
Serial Gateway
or protocol
macro mode.
The SD
@
/
RD
@
and
COM
@
indi-
cators do not
flash at all.
(Communica-
tions have
not been
electrically
established.)
0205 hex
(response
timeout), etc.
---
A hardware
error has
occurred.
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.
The SD
@
and
COM
@
indi-
cators do not
flash.
0202 hex (no
Unit)
or
0401 hex
(undefined
command)
---
The FINS
destination
address is
not specified
correctly.
Correct the FINS desti-
nation address specifica-
tion, and then resend the
FINS message. (Refer
particularly to
The serial com-
munications
mode is set to
Serial Gateway
or protocol
macro mode
The SD
@
and
COM
@
indi-
cators do not
flash at all.
2605 hex
(service exe-
cuting)
---
The serial
port received
a sixth FINS
command
when five
FINS com-
mands are
already wait-
ing.
Include retry processing
at the FINS command
transmission source for
when the FINS response
code 2605 hex is
received.
Error conditions
Cause
Remedy
Board/Unit
status
Serial commu-
nications mode
Indicator
display
FINS end
code sent to
FINS trans-
mission
source
Words allo-
cated in CIO
Area
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...