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15 TROUBLESHOOTING
Classification
Error
of errors
code
Illegal setting of ABS
Positioning
546
direction in unit of
operation
degree
800
Hold error
Flash ROM write
801
error
Flash ROM sum
802
check error
803
PLC CPU error
I/F
Dedicated instruction
804
error
Flash ROM write
805
number error
Dedicated instruction
806
I/F error
Error name
The setting value of ABS direction in
the unit of degree is as follows.
• Set outside the setting range.
• A figure other than "0" is set when
the software stroke limit is valid.
In the PLC CPU unit parameter
"Output at error stop", the setting for
QD75 is "Hold".
Data is not written to the flash ROM.
While data is written to the flash
ROM, the power is turned OFF.
The PLC CPU resulted in an error.
• The ABRST
executed with the status set to
other than 0.
• The PSTRT
executed with the start No. set to
other than 10 to 600, 7000 to 7004
and 9001 to 9004.
• The TEACH
executed with the teaching data
selection set to other than 0 and 1.
• The TEACH
executed with the positioning data
No. set to other than 1 to 600.
• The instruction of a non-existent
axis is specified by the ABRST ,
PSTRT
Data is written to the flash ROM
continuously 25 times or more from
the sequence program.
Mismatching occurs between the
PLC CPU and QD75.
Error
At start: The system will not operate.
During operation:
(Note that, in the continuous
positioning control and continuous
path control, the system continues
operating with the setting set at the
time of start even if the setting is
changed during the operation.)
At start: The system will not operate.
During operation:
(Note that the deceleration stop only
occurs during the manual pulse
generator operation.)
At start: The system will not operate.
instruction is
At start: The system will not operate.
During operation:
instruction is
instruction is
instruction is
(Note that the deceleration stop only
occurs during the manual pulse
generator operation.)
or TEACH
instruction.
At start: The system will not operate.
15 - 22
MELSEC-Q
Operation status at error occurrence
The system decelerates to a
stop.
The system stops with the
setting (deceleration
stop/sudden stop) of the
detailed parameter 2 sudden
stop selection
(stop group 3).
The system stops with the
setting (deceleration
stop/sudden stop) of the
detailed parameter 2 sudden
stop selection
(stop group 3).
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Troubleshooting
