328
Troubleshooting
Section 11-3
The serial com-
munications
mode is set to no-
protocol mode.
---
With Serial
Communica-
tions Units:
The
RXDU(255)
instruction
was sent, but
reception is
not being
executed.
The ER Flag (type of condi-
tion flag) is ON.
The setting con-
tents indicated by
the operand in the
RXDU(255)
instruction is incor-
rect.
Review the con-
tents of the oper-
and for the
RXDU(255)
instruction.
The TXDU(256)/
RXDU(255)
instruction, or
SEND(090),
RECV(098),
CMND(490), or
PMCR(260)
instruction is being
executed using the
same communica-
tions port No.
Either use a com-
munications port
other than that exe-
cuting the
TXDU(256),
RXDU(255),
SEND(090),
RECV(098),
CMND(490), or
PMCR(260)
instruction, or wait
until the required
port can be used
and execute the
instruction.
The Communications Port
Error Flags A21900 to
A21907 are ON.
FINS end code:
2201 hex (not pos-
sible during execu-
tion) was returned.
If the RXDU(255)
instruction was
executed, the oper-
ation is disabled
due to the port
being busy while
receiving.
Insert an AND in
the input condition
for a NO condition
of the Communica-
tions Port Enabled
Flag.
FINS end code:
2202 hex (not pos-
sible while
stopped) was
returned. Execu-
tion is not possible
while the protocol
is being switched
using the
STUP(237)
instruction.
Insert an AND in
the input condition
for a NC condition
of the Serial Com-
munications Unit’s
Port Settings
Change Bit
(A62001 to
A63504).
The Communications Port
Enabled Flags (A20200 to
A20207) are OFF (execution
disabled).
The TXDU(256)/
RXDU(255)
instruction, or
SEND(090),
RECV(098),
CMND(490), or
PMCR(260)
instruction is being
executed using the
same communica-
tions port No.
Either use a com-
munications port
other than that exe-
cuting the
TXDU(256),
RXDU(255),
SEND(090),
RECV(098),
CMND(490), or
PMCR(260)
instruction (Bits 12
to 15 of C1), or wait
until the required
port can be used
and then execute
the RXDU(255)
instruction.
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...