Siemens SINUMERIK 840D sl Function Manual page 569

Selecting reference systems
For JOG motion, one of three reference systems can be specified separately both for
Translation (coarse traverse) with geometry axes, as well as for
Orientation with orientation axes via the
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 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.
Translation in the BCS
The basic coordinate system (BCS) describes the Cartesian zero of the machine.
Figure 7-28
Extended Functions
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
Cartesian manual travel in the basic coordinate system (translation)
M1: Kinematic transformation
7.7 Cartesian manual travel (optional)
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