Siemens SINUMERIK 828D Function Manual page 697

Transformation changeover
The following interrelationships must be noted with respect to kinematic transformation and geometry axis
replacement:
• Geometry axis assignments cannot be modified when the transformation is active.
• Activation of a transformation deletes the programmed geometry axis configuration and replaces it by the
geometry axis assignment stored in the machine data of the activated transformation.
• The initial setting defined through MD for the geometry axis configuration becomes effective after deactivating
the transformation.
Should it be necessary to modify the geometry axis assignment in connection with transformations, then another
new transformation must be configured. The total number of the transformations simultaneously available in the
channel is equal to 8.
A maximum of two transformations per channel can be available simultaneously from the transformation groups
below:
• Orientation transformations
(3-axis, 4-axis, 5-axis and nutation transformation)
• TRAANG (oblique axis)
• TRANSMIT
• TRACYL
References:
/FB3/Function Manual, Special Functions; 3-Axis to 5-Axis Transformation (F2)
/FB2/Function Manual, Extension Functions; Kinematic Transformation (M1)
Example
In the example below, it is assumed that there are 6 channel axes with channel axis names XX, YY, ZZ, U, V, W
and three geometry axes with names X, Y, Z. The basic setting is defined in machine data such that the
geometry axes are imaged on the first three channel axes, i.e., on XX, YY and ZZ.
GEOAX()
G0 X0 Y0 Z0 U0 V0 W0
GEOAX (1, U, 2, V, 3, W)
GEOAX(1, XX, 3, ZZ)
G17 G2 X20 I10 F1000
GEOAX(2,W)
G17 G2 X20 I10 F1000
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
; The geometry axis assignment defined via the machine
data
MD AXCONF_GEOAX_ASSIGN_TAB
is effective,
i.e., XX, YY and ZZ become geometry axes.
; All the axes in rapid traverse to position 0.
; Channel axis U becomes the first, V the second and W
the third geometry axis.
; Channel axis XX becomes the first, ZZ the third
geometry axis. The second geometry axis remains
unchanged.
; Semicircle in the X, Y plane. Channel axes XX and V
traverse.
; Channel axis W becomes the second geometry axis. The
first and third geometry axes remain unchanged.
; Full circle in the X, Y plane. Channel axes XX and W
traverse.
K2: Axis Types, Coordinate Systems, Frames
10.2 Axes
697