Mitsubishi MELSEC-Q QD77MS, User Manual

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Chapter 16 Troubleshooting
Classification
of errors
Error
code
Error name Error Operation status at error occurrence
803 PLC CPU error The CPU resulted in an error.
At start : The system does not
operate.
During operation : The system stops with the
setting (deceleration
stop/sudden stop) of the
detailed parameter 2
sudden stop selection
(stop group 2).
(Note that the deceleration
stop only occurs during the
manual pulse generator
operation.)
804
Dedicated instruction
error
• The ZP.PSTRT instruction is executed
with the start No. set to other than 1 to
600, 7000 to 7004 and 9001 to 9004.
• The ZP.TEACH instruction is executed
with the teaching data selection set to
other than 0 and 1.
• The ZP.TEACH instruction is executed
with the positioning data No. set to other
than 1 to 600.
• The instruction of a non-existent axis is
specified by the ZP.PSTRT or
ZP.TEACH instruction.
The function for each instruction is not
executed.
805
Flash ROM write
number error
Data is written to the flash ROM
continuously 25 times or more from the
program.
806
Dedicated instruction
I/F error Mismatching occurs between the CPU
module and QD77MS.
At start: The system does not operate.
808
Error when switching
from normal operation
mode to amplifier-less
operation mode Input signals other than synchronization
flag [X1] are ON when switching from the
normal operation mode to the amplifier-less
operation mode.
I/F
errors
809
Error when switching
from amplifier-less
operation mode to
normal operation mode Input signals other than synchronization
flag [X1] are ON when switching from the
amplifier-less operation mode to the normal
operation mode.
The operation mode is not changed.
900
Outside unit setting
range The set value of the basic parameter 1
"Unit setting" is outside the setting range.
901
Outside pulse number
per rotation range
The set value of the basic parameter 1
"Number of pulses per rotation" is outside
the setting range.
902
Outside movement
amount per rotation
range The set value of the basic parameter 1
"Movement amount per rotation" is outside
the setting range.
Parameter
setting range
errors
903
Outside unit
magnification range
• The set value of the basic parameter 1
"Unit magnification" is outside the setting
range.
• "Movement amount per rotation (AL)" ×
"Unit magnification (AM)" exceeds
2147483648.
The QD77 READY signal [X0] is not turned
ON.