9 MAJOR POSITIONING CONTROL

MELSEC-Q

Operation chart

The following chart shows the operation timing for 4-axis speed control with axis 1 as the reference axis.

The "in speed control" flag (

Md.31

Status: b0) is turned ON during speed control.

The "positioning complete signal" is not turned ON.

V

Da. 8 Command speed

Interpolation axis (axis 4)

t

V

Da. 8 Command speed

V

Da. 8 Command speed

Interpolation axis (axis 3)

Interpolation axis (axis 2)

t

t

V

Da. 8 Command speed

ON

Positioning start signal

OFF

 

[Y10]

 

 

ON

BUSY signal

OFF

 

[XC,XD,XE,XF]

 

Positioning complete signal

OFF

 

[X14,X15,X16,X17]

 

Referense axis (axis 1)

ON

t

Does not turn ON even when control is stopped by stop command.

Axis stop signal (stop command) (Either Y4,Y5,Y6 or Y7)

In speed control flag

Md.31 Status: b0

OFF

ON

OFF

Fig. 9.12 4-axis speed control operation timing

9 - 78

Page 378
Image 378
Mitsubishi Electronics QD75P, QD75D user manual 12 4-axis speed control operation timing