Basic Coordinate System (Bcs) - Siemens SINUMERIK 840D sl Function Manual

K2: Axis Types, Coordinate Systems, Frames
10.4 Coordinate systems
Overlaid movement $AA_OFF
● An overlaid movement from a synchronized action with $AA_OFF is not affected by
PRESETONS.
Online tool offset FTOC
● An active online tool offset from a synchronized action with FTOC remains active even after
PRESETONS.
Axis-specific compensations
Axis-specific compensations remain active after PRESETONS.
JOG mode
● PRESETONS must only be used on a stationary axis.
JOG mode, REF machine function
● PRESETONS must not be used.
10.4.3

Basic coordinate system (BCS)

Basic coordinate system (BCS)
The basic coordinate system (BCS) consists of three mutually perpendicular axes (geometry
axes) as well as other special axes, which are not interrelated geometrically.
Machine tools without kinematic transformation
BCS and MCS always coincide when the BCS can be mapped onto the MCS withouth
kinematic transformation (e.g. TRANSMIT / face transformation, 5-axis transformation and up
to three machine axes).
On such machines, machine axes and geometry axes can have the same names.
Figure 10-14 MCS=BCS without kinematic transformation
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Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions