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MELSEC-Q
15 TROUBLESHOOTING
Classification
of errors
Error
code
Error name Error
Operation status at error
occurrence
The calculation result of the following
equation is smaller than 0 or larger than
65536.
Pr.11 Pr.2
920
Backlash
compensation
amount error
0
≤
Pr.3
≤
65535
The QD75 READY signal (X0) is
not turned ON.
921
Software stroke limit
upper limit
• In the unit of degree, the set value of
the detailed parameter 1 "Software
stroke limit upper limit value" is
outside the setting range.
• In a unit other than degree, the
software stroke limit upper limit value
is smaller than the software stroke
limit lower limit value.
922
Software stroke limit
under lower limit
• In case unit is "degree", the set range
of the detailed parameter 1 "Software
stroke limit lower limit value" is outside
the setting range.
• In case unit is different than "degree",
the software stroke limit upper limit
value is smaller than the software
stroke limit lower limit value.
923
Software stroke limit
selection error
The set range of the detailed parameter
1 "Software stroke limit selection" is
outside the setting range.
924
Software stroke limit
valid/invalid setting
error
The set range of the detailed parameter
1 "Software stroke limit valid/invalid
setting" is outside the setting range.
925
Command
in-position width
error
The set range of the detailed parameter
1 "Command in-position width" is
outside the setting range.
926
Illegal torque limit
setting value error
The set range of the detailed parameter
1 "Torque limit setting value" is outside
the setting range.
927
M code ON timing
error
The set range of the detailed parameter 1
"M code ON signal output timing" is
outside the setting range.
928
Speed switching
mode error
The set range of the detailed parameter
1 "Speed switching mode" is outside
the setting range.
929
Interpolation speed
designation method
error
The set range of the detailed parameter
1 "Interpolation speed designation
method" is outside the setting range.
930
Current value update
request error
The set range of the detailed parameter
1 "Current feed value during speed
control" is outside the setting range.
Parameter
setting range
errors
932
Manual pulse
generator input
mode error
The set range of the detailed parameter
1 "Manual pulse generator input
selection" is outside the setting range.
The QD75 READY signal (X0) is
not turned ON.