Siemens sinumerik 802d sl Operation And Programming Manual page 164

Programming
8.3 Axis movements
Y
Fig. 8-28
Programming example
N5 G602
N10 G0 G60 X...
N20 X... Y...
...
N50 G1 G601 ...
N80 G64 X...
...
N100 G0 G9 X...
N111 ...
Remark: The G9 command only generates exact stop for the block in which it is program-
med; G60, however, is effective until it is canceled by G64.
Continuous-path control mode G64
The objective of the continuous-path control mode is to avoid deceleration at the block
boundaries and to switch to the next block with a path velocity as constant as possible
(in the case of tangential transitions). The function works with look-ahead velocity control
over several blocks.
For non-tangential transitions (corners), the velocity can reduced rapidly enough so that the
axes are subject to a relatively high velocity change over a short time. This may lead to a
significant jerk (acceleration change). The size of the jerk can be limited by activating the
SOFT function.
8-164
Block change enable
for "coarse" / for "fine"
Exact stop window coarse or fine, in effect for G60/G9; enlarged display of the windows
; exact-stop window, coarse
; Exact stop, modal
; G60 continues to be effective
; Exact-stop window, fine
; Switching to continuous path-control mode
; Exact stop is only effective for this block
; Continuous-path control mode again
SINUMERIK 802D sl Operation and Programming Nibbling (BP-N), 06/2006 Edition
(coarse)
G602
G601
(fine)
X
6FC5 398-3CP10-0BA0