Mitsubishi QJ71LP21 Reference Manual page 259

8 TROUBLESHOOTING
Error
Code Error Contents and Cause
*1
(SD0)
The operation circuit for indexing in the
1200 CPU module does not operate
normally.
The hardware (logic) in the CPU
1201
module does not operate normally.
The operation circuit for sequence
1202 processing in the CPU module does
not operate normally.
The operation circuit for indexing in the
1203 CPU module does not operate
normally.
The hardware (logic) in the CPU
1204
module does not operate normally.
The operation circuit for sequence
1205 processing in the CPU module does
not operate normally.
The DSP operation circuit in the CPU
1206
module does not operate normally.
There is an output module with a
blown fuse.
1300
There is an output module with a
blown fuse.
*1 Characters in parentheses ( ) indicate the special register numbers where individual information is being
:
stored.
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Corrective Action
This suggests a CPU module
hardware fault. (Contact your local
Mitsubishi representative.)
• Check FUSE. LED of the output
modules and replace the module
whose LED is lit.
(The module with a blown fuse can
also be identified using GX
Developer.
Check the special registers SD1300
to SD1331 to see if the bit
corresponding to the module is "1".)
• When a GOT is bus-connected to
the main base unit or extension
base unit, check the connection
status of the extension cable and the
earth status of the GOT.
Check ERR. LED of the output
modules and replace the module
whose LED is lit.
(The module with a blown fuse can
also be identified using GX Developer.
Check the special registers SD130 to
SD137 to see if the bit corresponding
to the module is "1".)
MELSEC-Q
Corresponding
CPU
Q4AR
QnPRH
Q4AR
Qn(H)
QnPH
QnPRH
Rem
Q00J/Q00/Q01
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