National Instruments NI-Motion User Manual page 135

Tip Because the camming cycle is 6,000 counts, the master cycle must also be
6,000 counts.
© National Instruments Corporation
2,000 counts in the opposite direction of the conveyor belt at half the speed
that the conveyor belt is traveling at. Figure 10-10 shows the move profile
of the first and second move segments.
Slave
2000
1000
Figure 10-10. First and Second Move Segment Profile
Table 10-1 shows the camming table that corresponds to the move profile
in Figure 10-10
Table 10-1. Welding Application Cam Table
Time
(seconds)
0
2
4
6
* Ratio = ∆SlaveDistance / ∆MasterDistance
Table 10-1 shows that the camming cycle is 6,000 counts and is divided into
equal length segments.
10-13
Chapter 10
2000 4000
.
Master
Position Slave Position
(counts) (counts)
0
2000 2000
4000 1000
6000
Electronic Gearing and Camming
Master
6000
Ratio*
0 —
1
–0.5
0 –0.5
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