Siemens SINUMERIK 840D sl Function Manual page 477

MD21106 $MC_CART_JOG_SYSTEM (coordinate systems for Cartesian JOG)
Bit
0
1
2
Note
The workpiece coordinate system has been shifted and rotated compared to the basic
coordinate system via frames.
Reference:
Function Manual Basic Functions; Axes, Coordinate Systems, Frames (K2)
Representation of the reference system in the coordinate system:
Selecting reference systems
For JOG motion, one of the three reference systems can be specified separately not only for
the translation (coarse offset) with geometry axes, but also for the orientation with orientation
axes via the following setting data:
SD42650 $SC_CART_JOG_MODE
If more than one bit is set for the translation or orientation reference system, or when an attempt
is made to set a reference system which was not released by the MD21106
$MC_CART_JOG_SYSTEM, the alarm 14148 "Reference system for Cartesian manual travel
not allowed" will be generated.
Translation
A translation movement can be used to move the tool tip (TCP) in parallel and 3-dimensional
to the axes of the reference system. The traversing movement is made via the VDI signals of
the geometry axes.
Machine data MD24120$MC_TRAFO_GEOAX_ASSIGN_TAB_x[n] is used to assign the
geometry axes. Simultaneous traversing in more than one direction permits the execution of
movements that lie parallel to the directions of the reference system.
Extended Functions
Function Manual, 10/2015, 6FC5397-1BP40-5BA3
Meaning
Basic coordinate system
Workpiece coordinate system
Tool coordinate system
WCS = Workpiece zero
M1: Kinematic transformation
7.7 Cartesian manual travel (optional)
TCS = Tool reference point
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