9 MAJOR POSITIONING CONTROL

MELSEC-Q

 

 

Positioning continue (11)

 

Positioning continue (11)

Positioning

 

 

Address (+) direction

 

complete (00)

 

Address (-) direction

 

Positioning start signal

ON

OFF

 

[Y10, Y11, Y12, Y13]

 

Start complete signal

ON

OFF

 

[X10, X11, X12, X13]

 

 

 

ON

BUSY signal

[XC, XD, XE, XF]

OFF

 

 

ON

Positioning complete signal

OFF

 

[X14, X15, X16, X17]

 

Dwell time

Time

Fig. 9.3 Operation during continuous path control (Standard speed switching mode)

POINT

In the continuous path control, a speed variation will not occur using the near-pass function when the positioning data No. is switched (Refer to Section 12.3.3 "Near- pass function").

(2) Deceleration stop conditions during continuous path control

Deceleration stops are basically not carried out in continuous path control, but the machine will carry out a deceleration stop to speed "0" in the following cases (a) to (d).

(a)When the operation pattern of the positioning data currently being executed is "continuous path control: 11", and the movement direction of the positioning data currently being executed differs from that of the next positioning data. (Only for 1-axis positioning control (Refer to the "Point" in the next page.))

V

Positioning data No.1

Operation pattern : 11

Speed becomes 0

Positioning data No.2

Operation pattern : 00

9 - 9

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Image 309
Mitsubishi Electronics QD75D, QD75P user manual Deceleration stop conditions during continuous path control