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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", "2-axis circular interpolation control", and "3-axis helical
interpolation control", control is carried out so that a specified path is 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 system"
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
3-axis linear interpolation control, "3-axis fixed-feed
control, 3-axis speed control
Axis 1
Axis 2, Axis 3
Axis 2
Axis 3, Axis 4
Axis 3
Axis 4, Axis 1
Axis 4
Axis 1, Axis 2
4-axis linear interpolation control, "4-axis fixed-feed
control, 4-axis speed control
Axis 1
Axis 2, Axis 3, Axis 4
Axis 2
Axis 3, Axis 4, Axis 1
Axis 3
Axis 4, Axis 1, Axis 2
Axis 4
Axis 1, Axis 2, Axis 3
The available axis combinations in the 3-axis helical interpolation control are the
same as the ones in the "3-axis linear interpolation control", "3-axis fixed-feed
control", and "3-axis speed control". However, the circular interpolation axis can be
specified with " Da.5 Axis to be interpolated" of the reference axis.
The following table lists the combinations of the reference axis, circular
interpolation axis, and linear interpolation axis for the 3-axis helical interpolation
control.
Axis definition
Axis set to interpolation
control in " Da.2 Control system"
Reference
axis
Circular interpolation
axis 1
Linear interpolation
axis 2
3-axis helical interpolation control
Axis 1
Axis 2
Axis 3
Axis 3
Axis 2
Axis 2
Axis 3
Axis 4
Axis 4
Axis 3
Axis 3
Axis 4
Axis 1
Axis 1
Axis 4
Axis 4
Axis 1
Axis 2
Axis 2
Axis 1
1: Specify with " Da.5 Axis to be interpolated" of the reference axis.
2: An axis which is not specified with " Da.5 Axis to be interpolated" of the reference axis is
automatically assigned.
Summary of Contents for D75D4
Page 2: ......
Page 22: ...A 20 MEMO ...
Page 24: ...MEMO ...
Page 41: ...1 17 MELSEC Q 1 PRODUCT OUTLINE MEMO ...
Page 48: ...1 24 MELSEC Q 1 PRODUCT OUTLINE MEMO ...
Page 58: ...2 10 MELSEC Q 2 SYSTEM CONFIGURATION MEMO ...
Page 65: ...3 7 MELSEC Q 3 SPECIFICATIONS AND FUNCTIONS ...
Page 139: ...5 35 MELSEC Q 5 DATA USED FOR POSITIONING CONTROL MEMO ...
Page 238: ...5 134 MELSEC Q 5 DATA USED FOR POSITIONING CONTROL MEMO ...
Page 251: ...6 13 MELSEC Q 6 SEQUENCE PROGRAM USED FOR POSITIONING CONTROL ...
Page 254: ...6 16 MELSEC Q 6 SEQUENCE PROGRAM USED FOR POSITIONING CONTROL ...
Page 255: ...6 17 MELSEC Q 6 SEQUENCE PROGRAM USED FOR POSITIONING CONTROL ...
Page 256: ...6 18 MELSEC Q 6 SEQUENCE PROGRAM USED FOR POSITIONING CONTROL ...
Page 259: ...6 21 MELSEC Q 6 SEQUENCE PROGRAM USED FOR POSITIONING CONTROL ...
Page 260: ...6 22 MELSEC Q 6 SEQUENCE PROGRAM USED FOR POSITIONING CONTROL ...
Page 292: ...7 8 MELSEC Q 7 MEMORY CONFIGURATION AND DATA PROCESS ...
Page 294: ...7 10 MELSEC Q 7 MEMORY CONFIGURATION AND DATA PROCESS ...
Page 298: ...MEMO ...
Page 462: ...9 140 MELSEC Q 9 MAJOR POSITIONING CONTROL MEMO ...
Page 490: ...10 28 MELSEC Q 10 HIGH LEVEL POSITIONING CONTROL MEMO ...
Page 524: ...11 34 MELSEC Q 11 MANUAL CONTROL Creating the program ...
Page 666: ...14 24 MELSEC Q 14 DEDICATED INSTRUCTIONS MEMO ...
Page 675: ...15 9 MELSEC Q 15 TROUBLESHOOTING MEMO ...
Page 716: ...15 50 MELSEC Q 15 TROUBLESHOOTING MEMO ...
Page 725: ...Appendix 9 MELSEC Q APPENDICES MEMO ...
Page 878: ...Appendix 162 MELSEC Q APPENDICES 6 QD75D4N 90 23 27 4 12 98 4 46 Unit mm ...
Page 879: ...Appendix 163 MELSEC Q APPENDICES 7 QD75P1 QD75P2 QD75P4 27 4 23 98 90 4 46 unit mm ...
Page 880: ...Appendix 164 MELSEC Q APPENDICES 8 QD75D1 QD75D2 QD75D4 27 4 23 90 12 98 4 46 unit mm ...
Page 893: ...WARRANTY ...
Page 895: ......