Siemens Sinumerik 840D sl Programming Manual page 175

With non-linear interpolation, the setting for the appropriate positioning axis (BRISKA, SOFTA,
DRIVEA) applies with reference to the axial jerk.
NOTICE
Risk of collision
For non-linear interpolation, generally another contour is traversed along than for linear
interpolation. As a consequence, synchronized actions that refer to path coordinates, are
under certain circumstances not active.
In spite of programmed rapid traverse (G0), linear interpolation (G01) is applied in the following
cases:
● For a G code combination with G0 that does not permit positioning motion (e.g. tool radius
correction G40/G41/G42)
● When using G0 together with continuous path mode G64, G641, ... G645
● For active compressor (COMPCAD)
● For active transformation
Example:
Program code
G0 X0 Y10
G0 G40 X20 Y20
G0 G95 X100 Z100 M3 S100
Path POS[X]=0 POS[Y]=10 is traversed in path mode. No revolutional feedrate is active if path
POS[X]=100 POS[Z]=100 is traversed.
Settable block change time with G0
For single-axis interpolation, a new end-of-motion criterion FINEA or COARSEA or IPOENDA
can be set for block change even within the braking ramp.
Consecutive axes are handled in G0 like positioning axes.
With the combination of
● "Block change settable in the braking ramp of the single axis interpolation" and
● "Traversing path axes in rapid traverse movement as positioning axes with G0"
all axes can travel to their end point independently of one another. In this way, two sequentially
programmed X and Z axes are treated like positioning axes in conjunction with G0.
The block change to axis Z can be initiated by axis X as a function of the braking ramp time
setting (100-0%). Axis Z starts to move while axis X is still in motion. Both axes approach their
end point independently of one another.
For additional information, see Chapter Feedrate control (Page 97) and spindle motion
(Page 79).
Fundamentals
Programming Manual, 01/2015, 6FC5398-1BP40-5BA2
10.4 Rapid traverse motion (G0, RTLION, RTLIOF)
Motion commands
175