Interpolation Control; Meaning Of Interpolation Control - Mitsubishi Electric QD77MS User Manual

9.1.6 Interpolation control

Axis definition
Interpolation of
"[Da.2] Control method"
2-axis linear interpolation control
2-axis fixed-feed control
2-axis circular interpolation control
2-axis speed control
3-axis linear interpolation control
3-axis fixed-feed control
3-axis speed control
4-axis linear interpolation control
4-axis fixed-feed control
4-axis speed control
– : Setting not required (Use the initial value or a value within the setting range.)

Meaning of interpolation control

In "2-axis linear interpolation control", "3-axis linear interpolation control", "4-axis
linear interpolation control", "2-axis fixed-feed control", "3-axis fixed-feed control",
"4-axis fixed-feed control", "2-axis speed control", "3-axis speed control", "4-axis
speed control", and "2-axis circular interpolation control", control is carried out so
that linear and arc paths are drawn using a motor set in two to four axis directions.
This kind of control is called "interpolation control".
In interpolation control, the axis in which the control method is set is defined as the
"reference axis", and the other axis is defined as the "interpolation axis".
The Simple Motion module controls the "reference axis" following the positioning
data set in the "reference axis", and controls the "interpolation axis" corresponding
to the reference axis control so that a linear or arc path is drawn.
The following table shows the reference axis and interpolation axis combinations.
QD77MS2
Reference Interpolation
axis
Any of "Axis to be
axes interpolated" set
1 to 2 in reference axis
–
–
–
–
–
–
–
–
QD77MS4
Reference
axis axis
Any of "Axis to be
axes interpolated" set
1 to 4 in reference axis
Axis 1
Axis 2
Axis 3
Axis 4
Axis 2, Axis 3,
Axis 1
Axis 3, Axis 4,
Axis 2
Axis 4, Axis 1,
Axis 3
Axis 1, Axis 2,
Axis 4
9 - 21
Chapter 9 Major Positioning Control
Interpolation Reference
axis axis
Axis 2, Axis 3
Axis 3, Axis 4
Axis 4, Axis 1
Any of
Axis 1, Axis 2
axes
1 to 16
Axis 4
Axis 1
Axis 2
Axis 3
QD77MS16
Interpolation
axis
"Axis to be
interpolated
No.1" set in
reference axis
"Axis to be
interpolated
No.1" and "Axis
to be
interpolated
No.2" set in
reference axis
"Axis to be
interpolated
No.1", "Axis to
be interpolated
No.2" and "Axis
to be
interpolated
No.3" set in
reference axis