Siemens SINUMERIK 840D sl Function Manual page 778

K2: Axis Types, Coordinate Systems, Frames
10.5 Frames
N100 describes a rotation by 45 degrees in the X-Y plane. It is assumed that the toolholder
activated in N110 rotates the tool by 30 degrees around the X axis, i.e. the tool lies in the Y-Z
plane and is rotated by 30 degrees relative to the Z axis. As a result the Z axis of the frame
newly defined in N120 also points in this direction (independently of the value in setting data
SD42980 $SC_TOFRAME_MODE in N90).
SD42980 $SC_TOFRAME_MODE == 1:
The old and new X and X' coordinate axes coincide in the projection in the direction of the old
Z axis. The old and new Y and Y' coordinate axes form an angle of 8.13 degrees (right angles
are generally not retained in the projection).
SD42980 $SC_TOFRAME_MODE == 2:
Y and Y' coincide and X and X' form an angle of 8.13 degrees.
SD42980 $SC_TOFRAME_MODE == 3:
X and X' as well as Y and Y' each form an angle of 4.11 degrees.
Note
The named angles (8.13 and 4.11 degrees) are the angles, which the projections of the axes
form in the X-Y plane. They are not the spatial angles of these axes.
TCARR (request toolholder) and PAROT (align workpiece coordinate system on the workpiece)
TCARR uses the basic frame identified by following machine data:
MD20184 $MC_TOCARR_BASE_FRAME_NUMBER.
A system frame can be created for TCARR and PAROT alone, in order to avoid conflicts with
systems, which already use all the basic frames.
PAROT, TOROT and TOFRAME have previously changed the rotation component of the
programmable frames. In this case, it is not possible to shut down PAROT or TOROT separately.
On RESET, the programmable frame is deleted, which means that after changing the operating
mode to JOG, the rotation component of PAROT and TOROT is no longer available. The user
must also have unrestricted access to the programmable frame. Frames produced by PAROT
and TOROT must be able to be archived and reloaded via data backup.
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Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions