Mitsubishi Electric MELSEC-LD77MS2 User Manual page 40

(b) 2-axis linear interpolation control
This controls interpolation along a linear locus from the start point address
(current stop position) defined by two axes.
[Control using the absolute system]
1) This performs linear interpolation using two axes from the start point
address to the specified address.
2) The start point address and the specified address determine the
direction of travel.
[Example]
The operation when the start point address is 800 for axis 1 and 2000
for axis 2 and the positioning address specified to 2000 for axis 1 and
8000 for axis 2, is shown below.
Axis 1
2000
Start point address
(2000, 800)
800
0
[Control using the increment system]
1) This performs positioning to the composite position of the travel
direction and the travel increment specified by each axis from the start
point address.
2) The sign of the travel increment determines the direction of travel.
• For positive travel increment......Positioning in the positive direction
• For negative travel increment......Positioning in the negative direction
[Example]
The operation when the start point address is 800 for axis 1 and 2000
for axis 2 and the positioning address specified to 1200 for axis 1 and
6000 for axis 2, is shown below.
Axis 1
2000
Start point address
(2000, 800)
800
0 2000
REMARK
(Note-1): The interpolation speed during linear interpolation control can be selected
from "composite speed" and "reference axis speed" using the interpolation
speed designation method of detailed parameter 1. (Refer to Section 5.2.3
information about setting "
detailed parameter 1.)
(Note-1)
2000
(direction of address increase)
(direction of address decrease)
8000
Interpolation speed designation method
Pr.20
1 - 10
Chapter 1 Product Outline
Specified address
(8000, 2000)
Positioning operation
Axis 2
8000
End position when the travel increment
is 1200 for axis 1 and 6000 for axis 2.
Positioning operation
Axis 2
" of the