12 CONTROL SUB FUNCTIONS

MELSEC-Q

(2)Block start

At a block start, this function is valid for only the position control whose operation pattern is "Positioning complete" at the point whose shape has been set to "End". (Refer to Fig. 12.52.)

The following table indicates the operation of the deceleration start flag in the case of the following block start data and positioning data.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Da.13

Block start

 

Da.11

 

 

 

 

Da.12

 

 

 

 

 

 

 

Special start

data

 

Shape

 

 

 

Start data No.

 

 

 

 

 

instruction

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1st point

1: Continue

 

 

 

1

 

 

0: Block start

2nd point

1: Continue

 

 

 

3

 

 

0: Block start

3rd point

0: End

 

 

 

4

 

 

0: Block start

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Positioning

 

 

 

Da.1

 

 

 

Data No.

 

Operation pattern

 

 

 

 

 

 

 

 

101: Continuous positioning control

200: Positioning complete

300: Positioning complete

411: Continuous path control

500: Positioning complete

 

 

 

 

 

 

 

 

 

 

 

 

 

V

1st point: Continue (1)

2nd point: Continue (1)

3rd point: End (0)

 

 

 

 

Operation

 

 

 

 

 

 

pattern

Positioning complete (00)

 

 

 

 

 

 

 

Positioning complete (00)

 

 

Continuous

 

 

 

 

 

Positioning complete (00)

Continuous path

 

 

 

positioning

 

 

 

 

 

 

control (11)

 

 

 

control (01)

 

 

 

 

 

 

 

 

 

 

 

Positioning

Positioning

Positioning

Positioning

Positioning

 

 

data No. 1

data No. 2

data No. 3

data No. 4

data No. 5

 

 

 

 

 

 

t

Md.48

Deceleration start flag

0

 

 

 

1

Fig. 12.52 Operation of deceleration start flag at block start

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Image 569
Mitsubishi Electronics QD75D, QD75P user manual Block start Da.11 Da.12, Data Shape, Start data No