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Motion control concepts
Section 1-3
5
1-3-1-1 Relative and absolute moves
To move a single axis either the command
MOVE
for a relative move or the
command
MOVEABS
for an absolute move is used. Each axis has its own
move characteristics, which are defined by the axis parameters.
Suppose a control program is executed to move from the origin to an axis no.
0 (A) coordinate of 100 and axis no. 1 (B) coordinate of 50. If the speed
parameter is set to be the same for both axes and the acceleration and
deceleration rate are set sufficiently high, the movements for axis 0 and axis 1
will be as shown in the figure.
At start, both the axis 0 and axis 1 moves to a coordinate of 50 over the same
duration of time. At this point, axis 1 stops and axis 0 continues to move to a
coordinate of 100.
The move of a certain axis is determined by the axis parameters. Some
relevant parameters are:
/i
Defining moves
Parameter
Description
UNITS
Unit conversion factor
ACCEL
Acceleration rate of an axis in units/s
2
DECEL
Deceleration rate of an axis in units/s
2
SPEED
Demand speed of an axis in units/s
0
50
50
100
A
B
MOVEABS(100) AXIS(0)
MOVEABS(50) AXIS(1)
0
10
1
2
3
4
5
6
A
B
ACCEL=10
DECEL=10
SPEED=10
MOVE(40)
Содержание SYSMAC CJ Series
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Страница 84: ...FINS commands Section 3 4 72...
Страница 148: ...All BASIC commands Section 4 2 136 AXIS 1 AXIS 0...
Страница 277: ...Section 265 SECTION 5 Examples This chapter gives 2 categories of examples and tips How to s Practical examples...
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