Siemens SINUMERIK 808D

Description: This setting data defines the direction of the geometry axes on the machining plane
(XY in the case of G17) in the case of the frame definition by means of (TOROTY,
TOROTX) or for PAROT.
When a frame is calculated, the tool direction (Z in the case of G17) is uniquely
defined so that the tool direction and vertical axis (Z in the case of G17) of the
frame are parallel and lie perpendicular on the machining plane.
Rotation around the tool axis is free at first. This free rotation can be defined using
this
setting
data
so that the newly defined frame deviates as little as possible from
a previously active frame.
In all cases in which the setting data is not zero, an active frame remains unchanged
if the tool
direction (Z in the case of G17) of the old and the new frame are the same.
SD42980 $SC_TOFRAME_MODE>= 2000:
In the case of TOROT (or TOROTY and TOROTX), the rotations and translations of the
frame chain are used to calculate a frame in the tool reference system frame
($P_TOOLFRAME) berechnet.
Machine data 21110 $MC_X_AXIS_IN_OLD_X_Z_PLANE is not evaluated.
The explantory notes below refer to the G17 plane with the XY axes in the machining
plane and the tool axis being Z.
SD42980 $SC_TOFRAME_MODE = 2000:
Rotation around the Z axis is selected so that the angle between the new X axis and
the
old X-Z
plane has the same absolute value as the angle between the new Y axis and
the old Y-Z plane. This setting corresponds to the mean value of both settings which
would result for values 2001 and 2002 of this setting data.
It is also applied if the value of the units digit is greater than 2.
SD42980 $SC_TOFRAME_MODE = 2001:
The new X direction is selected so that it lies in the X-Z plane of the old coordinate
system. The angular difference between the old and new Y axes is minimal with this
setting.
SD42980 $SC_TOFRAME_MODE = 2002:
The new Y direction is selected so that it lies in the Y-Z plane of the old coordinate
system. The angular difference between the old and new X axes is minimal with this
setting.
None of the other settings of SD42980 $SC_TOFRAME_MODE (0,1,2,...1000,1001..) should
be used for recommissioning.
For compatibility reasons, the following settings remain valid:
0: The orientation of the coordinate system is determined by the value of machine data
21110 $MC_X_AXIS_IN_OLD_X_Z_PLANE.
1: The new X direction is selected so that it lies in the X-Z plane of the old
coordinate system. The angular difference between the old and new Y axes is minimal
with this setting.
2: The new Y direction is selected so that it lies in the Y-Z plane of the old
coordinate system. The angular difference between the old and new X axes is minimal
with this setting.
3: The average of the two settings resulting from 1 and 2 is selected.
Addition of 100: In the case of a plane change from G17 to G18 or G19, a tool matrix
is
generated, in
which the new axis directions are parallel to the old directions. The
axes are swapped cyclically accordingly (standard transformation on plane changes). If
the hundreds digit equals zero, a matrix is supplied in the cases of G18 and G19 which
is derived from the unit matrix by simply rotating through 90 degrees around the X axis
(G18) or through 90 degrees around the Y axis (G19). Thus in each case one axis is
antiparallel to an initial axis. This setting is required to remain compatible with
old software versions.
Addition of 1000: The tool-frame is linked to any active basic frames and settable
frames. The response is thus compatible with earlier software versions (before 5.3).
If the thousands digit is not set, the tool frame is calculated so that any active
basic frames and settable frames are taken into account.
NC setting data
Parameter Manual
360 List Manual, 01/2017