352
5 POSITIONING CONTROL
5.17 Continuous Trajectory Control
Processing details
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Start and end for 2 to 4 axes continuous trajectory control
2 to 4 axes continuous trajectory control is started and ended using the following instructions:
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Positioning control method to the pass point
Positioning control to change control is specified using the following instructions:
Precautions
For circular interpolation control at the pass points for continuous trajectory control of 2 to 4 axes, specify any 2 axes among
the controlled axes. When axes other than the axes specified for circular interpolation control are detected, an error occurs,
resulting in a deceleration stop.
Program example
This program example is explained in the "Q series Motion compatible device assignment" device assignment method.
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Program example 1
The program for repeating 2 axis continuous trajectory control of Axis 2 and Axis 3 is explained as an example.
• Positioning conditions
Instruction
Description
CPSTART2
Starts the 2 axes continuous trajectory control. Sets the axis No. and command speed.
CPSTART3
Starts the 3 axes continuous trajectory control. Sets the axis No. and command speed.
CPSTART4
Starts the 4 axes continuous trajectory control. Sets the axis No. and command speed.
CPEND
Ends the 2, 3, or 4 axes continuous trajectory control for CPSTART2, CPSTART3, or CPSTART4.
Instruction
Description
ABS-2, INC-2
Sets 2 axes linear interpolation control.
Control details are identical to 2 axes linear interpolation control. (
Page 273 2 Axes Linear Interpolation Control)
ABS-3, INC-3
Sets 3 axes linear interpolation control.
Control details are identical to 3 axes linear interpolation control. (
Page 276 3 Axes Linear Interpolation Control)
ABS-4, INC-4
Sets 4 axes linear interpolation control.
Control details are identical to 4 axes linear interpolation control. (
Page 280 4 Axes Linear Interpolation Control)
ABS/INC Sets
circular
interpolation
control using auxiliary point specification.
Control details are identical to auxiliary point-specified circular interpolation control. (
Specified Circular Interpolation Control)
ABS/INC ,
ABS/INC ,
ABS/INC ,
ABS/INC
Sets circular interpolation control using radius specification.
Control details are identical to radius-specified circular interpolation control. (
Page 287 Radius-Specified Circular
ABS/INC
, ABS/INC
Sets circular interpolation control using center point specification.
Control details are identical to central point-specified circular interpolation control. (
Specified Circular Interpolation Control)
• Continuous trajectory control conditions are shown below.
Item
Setting
Servo program No.
505
Positioning speed
10000
Positioning method
2 axes linear interpolation
Radius-specified circular interpolation
2 axes linear interpolation
Pass point
Axis 2
30000
50000
90000
Axis 3
30000
50000
100000
• Continuous trajectory control start command: X0 Leading edge (OFF
ON)
Summary of Contents for MELSEC iQ-R16MTCPU
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