9 MAJOR POSITIONING CONTROL

MELSEC-Q

Axis 1 Positioning data No. 1

Positioning data setting examples

The following table shows setting examples when "position-speed switching control (forward run: position/speed)" is set in positioning data No. 1 of axis 1.

 

Setting item

Setting example

 

Setting details

Da.1

 

Positioning

Set "Positioning complete" assuming the next positioning data will not

Operation pattern

be executed. ("Continuous positioning control" and "Continuous path

complete

 

 

control" cannot be set in "position/speed changeover control".)

 

 

 

 

 

 

 

 

 

 

 

Da.2

Control system

Forward run:

Set position-speed switching control.

 

 

position/speed

 

 

 

 

 

 

 

 

Designate the value set in "

 

Acceleration time 1" as the

 

Acceleration time No.

1

Pr.25

 

acceleration time at start.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Designate the value set in "

 

Deceleration time 0" as the

Da.4

Deceleration time No.

0

Pr.10

deceleration time at deceleration.

 

 

 

 

 

 

 

 

 

Da.5

Axis to be

Setting not required. (Setting value is ignored.)

 

interpolated

 

 

 

 

 

 

 

Positioning address/

 

Set the movement amount at the time of position control before the

 

10000.0m

switching to speed control. (Assuming that the "

 

Unit setting" is

 

Pr.1

 

movement amount

 

 

set to "mm".)

 

 

 

 

 

 

 

 

 

 

 

 

Arc address

Setting not required. (Setting value is ignored.)

 

 

 

 

 

 

 

Da.8

Command speed

6000.00mm/min

Set the speed to be controlled.

 

 

 

 

 

 

 

 

 

 

Set the time the machine dwells after the positioning stop (pulse

Da.9

Dwell time

500ms

output stop) by position control to the output of the positioning

complete signal. If the machine is stopped by speed control, the

 

 

 

 

 

 

setting value will be ignored.

 

 

 

 

 

 

 

Da.10

M code

10

Set this when other sub operation commands are issued in

combination with the No. 1 positioning data.

 

 

 

 

 

 

 

 

 

 

 

Refer to Section 5.3 "List of positioning data" for information on the setting details.

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Mitsubishi Electronics QD75P Da.1 Positioning, Control cannot be set in position/speed changeover control, Unit setting is