8 TROUBLESHOOTING
MELSEC-Q
8 - 48 8 - 48
*1
: Characters in parentheses ( ) indicate the special register numbers where individual information is being
stored.
Error
Code
(SD0)
*1
Error Contents and Cause Corrective Action
Corresponding
CPU
1200
The operation circuit for indexing in the
CPU module does not operate
normally.
This suggests a CPU module
hardware fault. (Contact your local
Mitsubishi representative.)
1201
The hardware (logic) in the CPU
module does not operate normally.
1202
The operation circuit for sequence
processing in the CPU module does
not operate normally.
1203
The operation circuit for indexing in the
CPU module does not operate
normally.
Q4AR
QnPRH
1204
The hardware (logic) in the CPU
module does not operate normally.
1205
The operation circuit for sequence
processing in the CPU module does
not operate normally.
1206
The DSP operation circuit in the CPU
module does not operate normally.
Q4AR
1300
There is an output module with a
blown fuse.
• 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.
Qn(H)
QnPH
QnPRH
Rem
There is an output module with a
blown fuse.
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".)
Q00J/Q00/Q01
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