Chapter 9 Major Positioning Control; Outline Of Major Positioning Controls - Mitsubishi Electric MELSEC-L LD75P User Manual

CHAPTER 9
9.1

Outline of Major Positioning Controls

"Major positioning controls" are carried out using the "positioning data" stored in the LD75.
The basic controls such as position control and speed control are executed by setting the required items in this
"positioning data", and then starting that positioning data.
The control system for the "major positioning controls" is set in setting item "[Da.2] Control system" of the positioning
data.
Control defined as a "major positioning control" carries out the following types of control according to the "[Da.2]
Control system" setting.
MAJOR POSITIONING CONTROL
Linear control
Position
Fixed-feed control
*1
control
2-axis circular
interpolation control
3-axis helical
interpolation control
MAJOR POSITIONING CONTROL
[Da.2] Control
ABS linear 1
1-axis linear control
INC linear 1
2-axis linear
ABS linear 2
*1
INC linear 2
interpolation control
3-axis linear
ABS linear 3
*1
INC linear 3
interpolation control
4-axis linear
ABS linear 4
*1
INC linear 4
interpolation control
1-axis fixed-feed
Fixed-feed 1
control
2-axis fixed-feed
Fixed-feed 2
*1
control
3-axis fixed-feed
Fixed-feed 3
*1
control
4-axis fixed-feed
Fixed-feed 4
*1
control
ABS circular sub
Sub point designation
INC circular sub
ABS circular right
*1
Center point ABS circular left
designation INC circular right
INC circular left
ABS helical sub
Sub point designation
INC helical sub
ABS helical right
*1
Center point ABS helical left
designation INC helical right
INC helical left

CHAPTER 9 MAJOR POSITIONING CONTROL

system
Positioning of a designated 1 axis is carried out from the start
address (current stop position) to the designated position.
Using a designated 2 axes, linear interpolation control is carried out
from the start address (current stop position) to the designated
position.
Using a designated 3 axes, linear interpolation control is carried out
from the start address (current stop position) to the designated
position.
Using a designated 4 axes, linear interpolation control is carried out
from the start address (current stop position) to the designated
position.
Positioning of a designated 1 axis is carried out from the start
address (current stop position).
(The "[Md.20] Current feed value" is set to "0" at the start.)
Using a designated 2 axes, linear interpolation control is carried out
from the start address (current stop position).
(The "[Md.20] Current feed value" is set to "0" at the start.)
Using a designated 3 axes, linear interpolation control is carried out
from the start address (current stop position).
(The "[Md.20] Current feed value" is set to "0" at the start.)
Using a designated 4 axes, linear interpolation control is carried out
from the start address (current stop position).
(The "[Md.20] Current feed value" is set to "0" at the start.)
Positioning is carried out in an arc path to a position designated
from the start point address (current stop position), using the
designated 2 axes.
Circular interpolation control is carried out with two of the three
axes. The other axis tracks the movement of the circular
interpolation control to carry out the positioning in helical or
tangential/normal control.
Description
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