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8 OPR CONTROL
Machine OPR start
(Positioning start signal)
OPR request flag
[ Md.31 Status : b3]
OPR complete flag
[Md.31 Status : b4]
Md.26 Axis operation status
Md.34 Movement amount
after near-point dog ON
Md.20 Current feed value
Md.21 Machine feed value
Fig. 8.8 Operation when a zero signal is input before the creep speed is reached
Restrictions
(1) Always limit the servomotor torque after the "
torque is not limited, the servomotor may fail when the machine presses against the
stopper. (Refer to Section 12.4.2 "Torque limit function".)
(2) Use an external input signal as the zero signal.
(3) In the "stopper method 2)", the OPR retry function is unusable.
Precautions during operation
(1) Input a zero signal from an external source after the machine presses against the
stopper.
The workpiece will continue decelerating and stop if a zero signal is input before
deceleration to the "
code: 204)" will occur after the machine stops.
(2) The near-point dog must be turned ON until it presses against the stopper.
OFF
OFF
OFF
Standing by
Inconsistent
Inconsistent
Pr.47
Creep speed". An error "OP detection timing fault (error
V
Pr. 46 OPR speed
Zero signal
Near-point dog
OFF
ON
ON
In OPR
0
Value the machine moved is stored
8 - 12
MELSEC-Q
Pr.47
Creep speed" is reached. If the
Pr. 47 Creep speed
Stops at stopper
t
ON
In error
Address at stop
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Troubleshooting
