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5 POSITIONING CONTROL
5.1 Basics of Positioning Control
■
Reference-axis speed specification
The Motion CPU calculates the positioning speed of other axes (V
1
to V
3
) based on the positioning speed (reference-axis
speed: V) of the setting reference-axis using each axis travel value (D
1
to D
4
).
Set the reference-axis No., reference-axis speed and each axis travel value using the servo program.
Ex.
4 axes linear interpolation control
[Program example]
In this example, since the reference-axis is axis 4, it is controlled with the positioning speed specified with axis 4.
The Motion CPU calculates the positioning speed of other axes using the following calculation formulas:
Setting item
Setting value
Axis 1 travel value (D
1
)
10000 [pulse]
Axis 2 travel value (D
2
)
15000 [pulse]
Axis 3 travel value (D
3
)
5000 [pulse]
Axis 4 travel value (D
4
)
20000 [pulse]
Reference axis speed (V)
7000 [pulse/s]
Reference axis
Axis 4
Axis
Calculation expression
Axis 1 positioning speed
V
1
= D
1
/ D
4
V
Axis 2 positioning speed
V
2
= D
2
/ D
4
V
Axis 3 positioning speed
V
3
= D
3
/ D
4
V
[pulse]
[pulse]
[pulse]
[pulse]
[pulse/s]
<K 52>
1,
2,
3,
4,
10000
15000
5000
20000
7000
4
ABS-4
Axis
Axis
Axis
Axis
Reference-axis speed
Reference-axis
Summary of Contents for MELSEC iQ-R16MTCPU
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