Siemens SINUMERIK 840D sl Function Manual page 661

Linear interpolation
Properties:
● The path axes are interpolated together.
● The tool movement programmed with G0 is executed at the highest possible speed (rapid
traverse).
● The rapid traverse velocity is defined separately for each axis in the following machine data:
MD32000 $MA_MAX_AX_VELO
● If the rapid traverse movement is executed simultaneously on several axes, the rapid
traverse speed is determined by the axis which requires the most time for its section of the
path.
Linear interpolation is always performed in the following cases:
● For a G-code combination with G0 that does not allow positioning axis motion, e.g.:
G40, G41, G42, G96, G961 and MD20750 $MC_ALLOW_G0_IN_G96 == FALSE
● With a combination of G0 with G64
● When a compressor or transformation is active
● In point-to-point (PTP) travel mode
● When a contour handwheel is selected (FD=0)
● In case of an active frame with rotation of geometry axes
● If nibbling is active for geometry axes
Non-linear interpolation
Properties:
● Each path axis interpolates as a single axis (positioning axis) independently of the other
axes at the rapid traverse velocity defined in the following machine data:
MD32000 $MA_MAX_AX_VELO
● The channel-specific delete distance-to-go command via the PLC and synchronized actions
is applied to all positioning axes that were programmed as path axes.
In non-linear interpolation, with reference to the axial jerk:
● The setting of the concerned positioning axes BRISKA, SOFTA, DRIVEA
or
● The setting in the machine data:
MD32420 $MA_JOG_AND_POS_JERK_ENABLE
and
MD32430 $MA_JOG_AND_POS_MAX_JERK
Extended Functions
Function Manual, 10/2015, 6FC5397-1BP40-5BA3
11.3 Motion behavior and interpolation functions
P2: Positioning axes
661