6 POSITIONING CONTROL

[Program]

Program for speed/position switching control is shown as the following conditions.

(1) System configuration

Speed/position switching control of Axis 4.

Motion CPU control module

Q61P Q02H Q172H Q172 QX41

CPU CPU LX

Start command (PX000)

AMP AMP AMP AMP

Axis

Axis

Axis

Axis

1 M

2 M

3 M

4 M

(2)Positioning conditions

(a)Positioning conditions are shown below.

Item

Positioning conditions

Servo program No.

101

Control axis

Axis 4

Travel value for

40000

positioning control

 

Command speed

1000

(b)Positioning start command .................................. Turning PX000 off to on

(c)Speed/position switching enable command ........ M3265

(3)Operation timing

Operation timing for speed/position switching control is shown below.

V

PLC ready flag (M2000)

All axes servo ON command (M2042)

All axes servo ON accept flag (M2049)

Axis 4 servo ready (M2475)

Start command (PX000)

Servo program start

Axis 4 start accept flag (M2004)

Speed/position switching enable command (M3265)

CHANGE signal input of the Q172LX

Speed/position switching latch (M2465)

Axis 4 positioning completion (M2461)

Servo program No.101

 

 

Speed control

 

 

 

 

 

 

 

Position control

 

 

 

 

 

 

 

t

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1second

 

1second

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