Basic Zero System (Bzs) - Siemens Sinumerik 840D sl Programming Manual

Fundamental Geometrical Principles
2.4 Coordinate systems
Machine kinematics
The workpiece is always programmed in a two or three dimensional, right-angled coordinate
system (WCS). However, such workpieces are being programmed ever more frequently on
machine tools with rotary axes or linear axes not perpendicular to one another. Kinematic
transformation is used to represent coordinates programmed in the workpiece coordinate
system (rectangular) in real machine movements.
References
Function Manual Expansion Functions; M1: Kinematic transformation
Function Manual, Special Functions; F2: Multi-axis transformations
2.4.3

Basic zero system (BZS)

The basic zero system (BZS) is the basic coordinate system with a basic offset.
Basic offset
The basic offset describes the coordinate transformation between BCS and BZS. It can be
used, for example, to define the palette window zero.
The basic offset comprises:
● External zero offset
● DRF offset
● Overlaid movement
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Programming Manual, 01/2015, 6FC5398-1BP40-5BA2
Fundamentals