Siemens SINUMERIK 802D sl Programming And Operating Manual page 73

lead to a significant jerk (acceleration change). The size of the jerk can be limited by activat-
ing the SOFT function.
Programming example
N10 G64 G1 Z... F...
N20 X...
...
N180 G60 ...
Look-ahead velocity control
In the continuous-path control mode with G64, the control system automatically determines
the velocity control for several NC blocks in advance. This enables acceleration and decel-
eration across multiple blocks with approximately tangential transitions. For paths that con-
sist of short travels in the NC blocks, higher velocities can be achieved than without look
ahead.
Figure 3-21
Grinding
Programming and Operating manual, 06/2006, 6FC5398-4CP10-0BA0
; Continuous-path mode
; Continuous-path control mode continues to be active
; Switching over to exact stop
Comparison of the G60 and G64 velocity behavior with short travels in the blocks
Programming
3.3 Axis movements
3-43