Siemens sinumerik 840D sl Function Manual page 18

Brief description
1.6 Cartesian manual travel
1.6 Cartesian manual travel
Function
The "Cartesian Manual Operation" function can be used to set one of the following
coordinate systems as reference system for JOG motion to be selected separately for
translation and orientation as:
• Basic coordinate system (BCS)
• Workpiece coordinate system (WCS)
• Tool coordinate System (TCS)
1.7 Cartesian PTP travel
Function
The "Cartesian PTP Travel" [PTP = Point-to-point movement (Point to Point)] function can be
used to program a position in a cartesian coordinate system (workpiece coordinate system).
The machine however moves in its machine coordinates.
The function can be used, for example, to traverse a singularity. Cartesian positions,
supplied by a CAD system, need not been converted to machine axis values.
It must also be noted that axes take longer to traverse in the Cartesian coordinate system
with active transformation and programmed feedrate than when they are traversed directly.
1.8 Generic 5-axis transformation
Function
The generic 5-axis transformation function differs from earlier 5-axis transformation versions
insofar as it is no longer restricted with respect to the directions of rotary axes.
The basic orientation of the tool is no longer predefined in machine data as was the case in
earlier versions of orientation transformations, but can now be programmed freely.
12
Special functions: 3-Axis to 5-Axis Transformation (F2)
Function Manual, 11/2006, 6FC5397-2BP10-2BA0