Omron TJ1-MC04 - PROGRAMMING 1 Programming Manual page 250

Examples and tips
Therefore, the parameters are:
UNITS = 2 = 32768
Pn202 = 1
Pn203 = 15
Pn205 = 4
REP_DIST = 50
REP_OPTION = 1
With these settings, executing MOVE(50) moves the moving part
50 mm, or one station.
Example 6
The mechanical system consists of a ball screw. It uses a servo
motor with a 17-bit absolute encoder. The mechanical gear ratio of
the gearbox is 1:3. The screw pitch of the ball screw is 10mm per
revolution. The total travel distance of the ball screw is 540 mm.
The mechanical measurement units must be mm.
With the same procedure as in example 1, we have:
17
.
Pn202 2 encoder_counts
UNITS =
. .
Pn203 1 motor_revolution 1 ballscrew_revolution
17
.
2 3 encoder_counts
=
10 mm
Therefore:
Pn202
UNITS = 2
Pn203
One solution is:
UNITS = 2 = 65536
Pn202 = 3
Pn203 = 5
PROGRAMMING MANUAL
15
. .
3 motor_revolution 1 ballscrew_revolution
10mm
3 3 3
17 17 16
= 2 = 2
.
10 2 5 5
16
M
17-bit absolute
1:3 Gear
=
encoder
fig. 24
10mm
540mm
250