9 -
6
9.
MAINTENANCE FUNCTION
*1
Can be changed to operation continues by GPP function parameter setting.
*2
GPP function parameters can be set so that no check is performed, or so that no check is
performed when SM251 is ON.
*3
GPP function parameters can be set so that no check is performed.
Self-diagnostics list
Diagnosis Item
Diagnosis Timing
CPU Module
Status
LED Status
LED Indicator Message
(Q3A/Q4ACPU Only)
RUN
ERROR
H
ard
w
are
er
ro
r
CPU module error
Always
Stop
OFF
Flickers
MAIN CPU DOWN
END instruction not executed
When executing END instruction
Stop
OFF
Flickers
END NOT EXECUTE
RAM check
At power-ON or RESET
Stop
OFF
Flickers
RAM ERROR
Operation circuit check
At power-ON or RESET
Stop
OFF
Flickers
OPE.CIRCUIT ERR.
Fuse blown
(Default
stop)
*1
When executing END instruction
(Default
check
executed)
*2
Stop/
Continue
OFF/ON
Flickering/
ON
FUSE BREAK OFF
I/O interrupt error
When interruption occurs
Stop
OFF
Flickers
I/O INT.ERROR
Special function module error
• At power-ON or RESET
• When executing FROM/TO instruction
Stop
OFF
Flickers
SP.UNIT DOWN
Control bus error
• At power-ON or RESET
• When executing FROM/TO instruction
Stop
OFF
Flickers
CONTROL-BUS ERR.
Occurrence of momentary
power interruption
Always
Continue
ON
OFF
AC DOWN
Low battery
Always (Default
check executed)
*3
Continue
ON
OFF
BATTERY ERROR
H
and
ling e
rr
or
I/O module verification
(Default
stop)
*1
When executing END instruction
(Default
check
executed)
*2
Stop/
Continue
OFF/ON
Flickering/
ON
UNIT VERIFY ERR.
Special function module
allocation error
• When power is ON or RESET
• When switching from STOP to RUN
Stop
OFF
Flickers
SP.UNIT LAY.ERR.
Special function module
access error
(Default
stop)
*1
When executing FROM/TO instruction
Stop/
Continue
OFF/ON
Flickering/
ON
SP.UNIT ERROR
No parameters
When power is ON or RESET
Stop
OFF
Flickers
MISSING PARA.
Boot error
When power is ON or RESET
Stop
OFF
Flickers
BOOT ERROR
Memory card operation error
(Default
stop)
*1
When memory card is inserted/removed
Stop/
Continue
OFF/ON
Flickering/
ON
ICM.OPE ERROR
File setting error
When power is ON or RESET
Stop
OFF
Flickers
FILE SET ERROR
File access error
(Default
stop)
*1
When executing each instruction
Stop/
Continue
OFF/ON
Flickering/
ON
FILE OPE.ERROR
Unable to execute instruction
When power is ON or RESET
Stop
OFF
Flickers
CAN'T EXE .PRG.
P
a
ram
ete
r e
rr
ors
Parameter setting check
• When power is ON or RESET
• When switching from STOP to RUN
Stop
OFF
Flickers
PARAMETER ERROR
Link parameter error
• When power is ON or RESET
• When switching from STOP to RUN
Stop
OFF
Flickers
LINK PARA.ERROR
SFC parameter error
When switching from STOP to RUN
Stop
OFF
Flickers
SFC PARA.ERROR
Summary of Contents for Q2ACPU
Page 1: ......
Page 2: ......
Page 221: ...12 12 12 OVERVIEW OF PROCESSING PERFORMED BY THE QnACPU ...
Page 222: ...12 13 12 OVERVIEW OF PROCESSING PERFORMED BY THE QnACPU ...
Page 237: ...12 28 12 OVERVIEW OF PROCESSING PERFORMED BY THE QnACPU MEMO ...
Page 271: ...16 13 16 POWER SUPPLY MODULE 4 Names and description of parts of the A66P ...
Page 343: ...21 21 13 MAINTENANCE AND INSPECTION 21 4 2 Replacement of the fuse for an output module ...
Page 357: ...22 12 22 TROUBLESHOOTING ...
Page 359: ...22 14 22 TROUBLESHOOTING MEMO ...
Page 429: ...App 32 APPENDICES Trigonometric function Classification Symbol Description ...
Page 537: ...App 140 APPENDICES REMARK 1 Message 1 An error code is displayed in 2 Alert 1 3 Alert 2 ...
Page 539: ...App 142 APPENDICES 2 Q2ACPU Q2ACPU S1 modules Unit mm inch ...
Page 541: ...App 144 APPENDICES 2 A66P power supply module Unit mm inch ...
Page 543: ...App 146 APPENDICES 3 A35B base unit 4 A38B A38HB A38HBEU base unit Unit mm inch Unit mm inch ...
Page 567: ...MEMO ...
Page 569: ......
Page 570: ......