Mitsubishi Electric MELSEC-L LD75D, User Manual

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CHAPTER 9 MAJOR POSITIONING CONTROL
9
9.
2 Set
ting t
he Pos
itioning
D
at
a
(2) 1-axis linear control (INC linear 1)
(a) Operation chart
In incremental system 1-axis linear control, positioning of movement amount set in "[Da.6] Positioning
address/movement amount" is carried out from the current stop position (start point address). The movement
direction is determined by the sign of the movement amount.
Ex.
When the start point address is 5000, and the movement amount is -7000, positioning is carried out to the
-2000 position.
(b) Positioning data setting example
The following table shows setting examples when "1-axis linear control (INC linear 1)" is set in positioning data
No. 1 of axis 1.
Refer to

Page 152, Section 5.3 for information on the setting details.
Setting item Setting example Setting details
Axis 1 positioning
data No. 1
[Da.1] Operation pattern Positioning complete
Set "Positioning complete" assuming that the next positioning data will not
be executed.
[Da.2] Control system INC linear 1 Set incremental system 1-axis linear control.
[Da.3] Acceleration time No. 1
Designate the value set in "[Pr.25] Acceleration time 1" as the acceleration
time at start.
[Da.4] Deceleration time No. 0
Designate the value set in "[Pr.10] Deceleration time 0" as the deceleration
time at deceleration.
[Da.5] Axis to be interpolated  Setting not required. (Setting value will be ignored.)
[Da.6]
Positioning
address/movement
amount
-7000.0

m Set the movement amount. (Assuming "mm" is set in "[Pr.1] Unit setting".)
[Da.7] Arc address

Setting not required. (Setting value will be ignored.)
[Da.8] Command speed 6000.00mm/min Set the speed during movement.
[Da.9] Dwell time 500ms
Set the time the machine dwells after the positioning stop (pulse output
stop) to the output of the positioning complete signal.
[Da.10] M code 10
Set this when other sub operation commands are issued in combination
with the No. 1 positioning data.
Reverese direction
Forward direction
Start point address
(current stop position)
Movement direction for
a negative movement amount
Movement direction for
a positive movement amount
5000 -2000 -3000 -1000 1000 2000 3000 4000 6000 0
Positioning control in the reverse direction
(movement amount -7000)
Address after positioning control Start point address
(current stop position)