Table of Contents
Advertisement
8.1 One Axis Positioning
8.1.1 Machine Configuration
8.1
One Axis Positioning
This section provides an example of positioning for a machine with a table mounted on a ball
screw that is directly coupled to a motor.
Important
8.1.1
Machine Configuration
The following figure shows the machine configuration used in this example, which moves a
table horizontally with a ball screw that is directly driven by the Servomotor. The ball screw lead
(i.e., the travel distance for one rotation) is 6 mm.
Ball screw
8.1.2
Related Parameters
The parameters that are related to the sample programming are listed in the following table.
Fixed Parameters
No.
0
1
2
4
5
6
8
9
29
30
34
36
Note: The default settings are used for the shaded parameters.
8-2
This section describes the basic programming necessary to move the machine. The example in
this section does not include interlocks or other elements that must be included for an actual sys-
tem.
Table
Setting
0
Normal operation mode
0000 hex
Finite length, software limits disabled, overtravel detection disabled, etc.
0000 hex
Masking disabled.
1
Selected reference unit: mm
3
Number of digits below decimal point: 3 (i.e., 1 reference unit = 0.001 mm)
6000
Travel distance per machine rotation: 6,000 reference units = 6 mm
Servomotor gear ratio term: 1 (This is because the ball screw is directly driven by the
1
motor.)
Machine gear ratio term: 1 (This is because the ball screw is directly driven by the
1
motor.)
0
Rotary motor
1
Absolute encoder
3000
Rated motor speed: 3,000 min
1048576
Number of pulses per motor rotation: 1,048,576 P/R
Servomotor
Coupling
Description
-1
Advertisement
Table of Contents
