9 MAJOR POSITIONING CONTROL

MELSEC-Q

Operation chart

The following chart shows the operation timing for position-speed switching control.

The "in speed control" flag ( Md.31 Status: b0) is turned ON during speed control of position-speed switching control.

V

Da. 8 Command speed

 

Position

Speed control

 

control

 

 

 

ON

 

Positioning start signal

OFF

 

 

 

[Y10,Y11,Y12,Y13]

 

 

 

ON

 

BUSY signal

OFF

 

 

 

[XC,XD,XE,XF]

 

 

Positioning complete signal

OFF

 

 

 

[X14,X15,X16,X17]

 

 

 

 

ON

Position-speed

OFF

 

 

 

switching signal

 

 

 

ON

 

t

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

Cd.26 Position-speed switching OFF

enable flag

ON

 

Stop command

OFF

 

In speed control flag

ON

OFF

Md.31 Status: b0

 

Fig. 9.18 Position-speed switching control operation timing

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Mitsubishi Electronics QD75D, QD75P user manual Position-speed switching control operation timing