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Chapter 16 Rotating Knife
© National Instruments Corporation 16-3 NI-Motion User Manual
Algorithm
Figure 16-2. Rotating Knife Application Algorithm
Initialize A = 0; B = 500
Load appropriate move
constraints for the slave
Set gear master = encoder 4;
Slave = axis 1
Enable high-speed capture
Set gear ratio to 1:1
Assuming circumference of the
blade = length of cut
Needed for the superimposed
(correction) move
Set operation mode to be
relative to captured position
Also called registration move mode
Wait for high-speed capture;
Read captured position
Set A = A + 2000
B = B + 2000
Correction =
A – captured position
Enable gearing on slave axis
After gearing is enabled, web can
be started, which rotates the knife
Loop waiting for move complete
Load target position =
correction
Start motion on slave
if current position > B