8 OPR CONTROL

MELSEC-Q

(3) If the "

Pr.49

OPR dwell time" elapses before the stop at the stopper, the workpiece

will stop at that position, and that position will be regarded as the OP. At this time, an error will not occur.

 

 

 

V

Pr. 46 OPR speed

 

 

 

 

 

 

 

 

 

 

 

Pr. 47 Creep speed

 

 

 

 

 

Stops at stopper

 

 

 

 

 

t

 

 

 

 

Valid torque limit range

 

 

 

 

Torque limit

 

 

 

 

 

ON

 

 

 

 

 

Near-point dog OFF

 

 

 

 

 

 

Time out of dwell time

 

 

 

 

Dwell time measurement

 

 

 

 

ON

 

Machine OPR start

OFF

 

 

 

(Positioning start signal)

 

 

 

 

 

 

 

 

ON

 

OPR request flag

OFF

 

 

 

[

Status : b3]

 

 

 

 

 

 

 

 

 

ON

OPR complete flag

OFF

 

 

 

[ Md.31 Status : b4]

 

 

 

 

Deviation counter clear output

 

 

 

Pr.55 Deviation counter clear signal

 

 

 

 

 

 

 

 

 

 

output time

Md.26 Axis operation status

Standing by

 

In OPR

Standing by

Md.34 Movement amount

Inconsistent

 

0

 

after near-point dog ON

 

 

 

 

Md.20 Current feed value

Inconsistent

 

Value the machine moved is stored

OP address

Md.21 Machine feed value

 

 

 

 

 

Fig. 8.6 Operation when the dwell time elapses before the stop at the stopper

(4) Machine OPR started while the near-point dog is ON will start at the "

Pr.47

Creep

speed".

(5)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.

8 - 10

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Mitsubishi Electronics QD75P, QD75D user manual Md.31 Status b4