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MELSEC-Q
9 MAJOR POSITIONING CONTROL
9.1.6 Interpolation control
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 system is set is defined as the
"reference axis", and the other axis is defined as the "interpolation axis".
The QD75 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.
Axis definition
Axis set to interpolation
control in "
Da.2 Control method"
Reference axis
Interpolation axis
2-axis linear interpolation control, 2-axis fixed-feed
control, 2-axis circular interpolation control, 2-axis
speed control
Any of axes 1, 2,
3, and 4
"Axes to be
interpolated" set in
reference axis
Axis 1
Axis 2, Axis 3
Axis 2
Axis 3, Axis 4
Axis 3
Axis 4, Axis 1
3-axis linear interpolation control, 3-axis fixed-feed
control, 3-axis speed control
Axis 4
Axis 1, Axis 2
Axis 1
Axis 2, Axis 3, Axis 4
Axis 2
Axis 3, Axis 4, Axis 1
Axis 3
Axis 4, Axis 1, Axis 2
4-axis linear interpolation control, 4-axis fixed-feed
control, 4-axis speed control
Axis 4
Axis 1, Axis 2, Axis 3
Summary of Contents for QD75M1
Page 17: ...MEMO...
Page 71: ...3 20 MELSEC Q 3 SPECIFICATIONS AND FUNCTIONS MEMO...
Page 87: ...4 16 MELSEC Q 4 INSTALLATION WIRING AND MAINTENANCE OF THE PRODUCT MEMO...
Page 98: ...5 11 MELSEC Q 5 DATA USED FOR POSITIONING CONTROL MEMO...
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Page 328: ...7 7 MELSEC Q 7 MEMORY CONFIGURATION AND DATA PROCESS MEMO...
Page 332: ...7 11 MELSEC Q 7 MEMORY CONFIGURATION AND DATA PROCESS MEMO...
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Page 529: ...11 36 MELSEC Q 11 MANUAL CONTROL MEMO...
Page 621: ...12 92 MELSEC Q 12 CONTROL SUB FUNCTIONS MEMO...
Page 647: ...14 18 MELSEC Q 14 DEDICATED INSTRUCTIONS MEMO...
Page 755: ...Appendix 2 MELSEC Q APPENDICES MEMO...
Page 758: ...Appendix 5 MELSEC Q APPENDICES Axis address mm inch degree PLS Axis address mm inch degree PLS...
Page 879: ...Index 14 MEMO...