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8 OPR CONTROL
Zero signal
Torque limit
Machine OPR start
(Positioning start signal)
OPR request flag
[ Md.31 Status : b3]
OPR complete flag
[ Md.31 Status : b4]
Deviation counter clear output
Md.26 Axis operation status
Md.34 Movement amount
after near-point dog ON
Md.20 Current feed value
Md.21 Machine feed value
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) The OPR retry function cannot be used in "stopper stop method 3)".
Precautions during operation
(1) If the zero signal is input before the workpiece stops at the stopper, the workpiece
will stop at that position, and that position will become the OP.
At this time an error will not occur.
V
Valid torque limit range
ON
OFF
ON
OFF
OFF
In OPR
Standing by
Inconsistent
0
Inconsistent
Value the machine moved is stored
Fig. 8.11 When the zero signal is input before the stop at the stopper
(2) When a machine OPR is stopped with the stop signal, perform a machine OPR again.
If the restart command is turned ON after a stop with the stop signal, an error "OPR
restart not possible" (error code: 209) occurs.
Pr.47
Pr. 47 Creep speed
Pr.55 Deviation counter clear signal
Standing by
OP address
8 - 15
MELSEC-Q
Creep speed" is reached. If the
Stops at stopper
t
ON
output time
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Troubleshooting
