The motion starts at point A, with the Z-axis raised. An X-Y motion to point B is followed by lowering the Z-axis
and performing a cut along the circle. Once the circular motion is completed, the Z-axis is raised and the motion
continues to point C, etc.
Assume that all of the 3 axes are driven by lead screws with 10 turns-per-inch pitch. Also assume encoder
resolution of 1000 lines per revolution. This results in the relationship:
1 inch = 40,000 counts
and the speeds of
1 in/sec = 40,000 count/sec
5 in/sec = 200,000 count/sec
an acceleration rate of 0.1g equals
0.1g = 38.6 in/s2 = 1,544,000 count/s
2
Note that the circular path has a radius of 2” or 80000 counts, and the motion starts at the angle of 270° and
traverses 360° in the CW (negative direction). Such a path is specified with the instruction
CR 80000,270,-360
Chapter 7 Application Programming • 171 DMC-40x0 User Manual
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