Path Axes; Positioning Axes - Siemens SINUMERIK 840D sl Function Manual

Special axes are part of the basic coordinate system (BCS). With FRAMES (translation,
scaling, mirroring), special axes of the workpiece coordinate system can be mapped on the
basic coordinate system.
Application
Typical special axes are:
● Rotary axes
● Machine tool axes
● Tool revolver axes
● Loader axes
10.2.6

Path axes

Meaning
Path axes are interpolated together (all the path axes of a channel have a common path
interpolator).
All the path axes of one channel have the same acceleration phase, constant travel phase and
delay phase.
The feedrate programmed under address F (path feedrate) applies to all the path axes
programmed in a block, with the following exceptions:
● An axis has been programmed that has been defined as having no control over the path
velocity with instruction FGROUP.
● Axes programmed with instructions POS or POSA have an individual feedrate setting (axis
interpolator).
Application
Path axes are used to machine the workpiece with the programmed contour.
10.2.7

Positioning axes

Meaning
Positioning axes are interpolated separately (each positioning axis has its own axis
interpolator). Each positioning axis has its own feedrate and acceleration characteristic.
Positioning axes can be programmed in addition to path axes (even in the same block). Path
axis interpolation (path interpolator) is not affected by the positioning axes. Path axes and the
individual positioning axes do not necessarily reach their block end points at the same time.
Basic Functions
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
K2: Axis Types, Coordinate Systems, Frames
10.2 Axes
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