Basic Characteristics RAPID

Motion and I/O Principles Positioning during Program Execution
Figure 20b If all positions were stop points, program execution would look like this.
Operation zone size
Figure 20c If the middle position was a fly-by point, program execution would look like this.
The orientation zone for the tool movement is normally expressed in mm. In this way,
you can determine directly where on the path the orientation zone begins and ends. If
the tool is not moved, the size of the zone is expressed in angle of rotation degrees
instead of TCP-mm.
If different reorientation velocities are programmed before and after the fly-by point,
and if the reorientation velocities limit the movement, the transition from one velocity
to the other will take place smoothly within the corner path.
2.3.4 Interpolation of external axes in corner paths
Zones can also be defined for external axes, in the same manner as for orientation. If
the external axis zone is set to be larger than the TCP zone, the interpolation of the
external axes towards the destination of the next programmed position, will be started
before the TCP corner path starts. This can be used for smoothing external axes
movements in the same way as the orientation zone is used för the smoothing of the
wrist movements.
2.3.5 Corner paths when changing the interpolation method
Corner paths are also generated when one interpolation method is exchanged for
another. The interpolation method used in the actual corner paths is chosen in such a
way as to make the transition from one method to another as smooth as possible. If the
corner path zones for orientation and position are not the same size, more than one
interpolation method may be used in the corner path (see Figure 21).
RAPID Reference Manual 6-19