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330
Troubleshooting
Section 11-3
The serial com-
munications
mode is set to no-
protocol mode.
---
---
The Reception Completed
Flag is OFF.
Board: Auxiliary Area bit
A35606/A35614 is OFF.
Unit: CIO Area word n+9/
n+19 bit 06 is OFF.
Reception does
not complete due
to the following fac-
tors.
---
The start code/
end code setting
is incorrect.
Revise the set-
tings for the start
code/end code in
DM Area word
m+5/m+15.
No data has
been received.
The specified
number of data
bytes has not
been received.
Revise the speci-
fied number of
receive data bytes
in allocation DM
Area word m+5/
m+15.
Data of 260
bytes or more
was received in
the reception
buffer before the
RXD(235)/
RXDU(255)
instruction was
executed.
Cycle the power or
restart the Board
and clear the
reception buffer.
Note: If an overrun
error occurs, the
Overrun Error Flag
can be turned OFF
by cycling the
power or restarting
the Unit/Board or
restarting the port.
---
---
A hardware error
has occurred in the
reception circuit of
the Board/Unit.
Conduct a loop-
back test in serial
communications
mode to check the
transmission lines.
If an error occurs
during the test,
replace the Board
or Unit.
Error conditions
Words allocated in CIO
Area
Cause
Remedy
Serial communi-
cations mode
Indicator
display
Status and
other condi-
tions
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...