Siemens SINUMERIK 840D sl Function Manual page 810

Positioning Axes (P2)
Block change
11.6 Block change
Positioning axes can be programmed in the NC block individually or in combination with path
axes.
Path axes and positioning axes are always interpolated separately (path interpolator and
axis interpolators) and this causes them to reach their programmed end positions at different
times.
There are three types of positioning axis, whose response differs with respect to block
change:
● Type 1
● Type 2
● Type 3
Positioning axis type 1
Block change at the programmed end point of all path axes and positioning axes
Figure 11-1
810
The block change occurs when all path and positioning axes have reached their
programmed end point.
Block change, if all path axes have reached their programmed end points according to
G601, G602, G603.
Block change is settable within the braking ramp of the single axis interpolation if the
criteria for the motion end and the block change are fulfilled for the path interpolation.
Block change with positioning axis type 1, example of sequence
Function Manual, 03/2009, 6FC5397-1BP10-4BA0
Extended Functions