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MELSEC-Q
15 TROUBLESHOOTING
Classification
of errors
Error
code
Error name Error Operation status at error occurrence
507
Software stroke
limit+
• Positioning is carried out at a
position beyond the software stroke
limit upper limit.
• The positioning address and new
current value exceed the software
stroke limit upper limit.
• In the circular interpolation by the
designation of the sub points, the
sub points exceed the software
stroke limit upper limit.
508
Software stroke
limit–
• Positioning is carried out at a
position beyond the software stroke
limit lower limit.
• The positioning address and new
current value exceed the software
stroke limit lower limit.
• In the circular interpolation by the
designation of the sub points, the
sub points exceed the software
stroke limit lower limit.
At start: The system will not operate.
In the analysis of new current value:
Current value is not
changed.
During operation:
• The system stops
immediately when the
positioning address during
position control (including
position control in speed-
position switching control or
position-speed switching
control) is switched to the
data outside the software
stroke limit range.
• The system makes a stop at
the setting (normal
deceleration stop only) of
sudden stop selection (stop
group 3) in the detailed
parameter 2 when the
current feed value or
machine feed value during
speed control (including
speed control in speed-
position switching control or
position-speed switching
control) or during manual
control falls outside the
software stroke limit range.
514
Outside new current
value range
The new current address is outside
the ranges of 0 to 359.99999, where
the control unit is set to "degree".
515
New current value
not possible
• The control system sets an
operation pattern (continuous path
control) using new current
positioning data.
• The operation pattern sets a "new
current value" in the control system
using the data following the
"continuous path control"
positioning data.
The current value is not changed.
Positioning
operation
516
Continuous path
control not possible
• The continuous path control is
designated using a control system
which is not allowed to use for
continuous path control such as
speed control, speed-position
switching control, position-speed
switching control, and fixed-feed.
• The previous data such as those
on speed control, speed-position
switching control, position-speed
switching control, and fixed-feed
shows a continuous path control.
• The continuous positioning control
is designated for speed control or
position-speed switching control.
At start, the system will not operate.