Siemens SINUMERIK 840C - Manual (Page 800)

01.99 12 Functional Descriptions
12.6.4 Transformation parameters
X
n
, Y
n
, Z
n
= rotated coordinates
X, Y, Z = real coordinate system
U, V, W = fictitious coordinate system
, , x = angle of rotation (angle from MD)
rotation through rotation through rotation through X
Transformation parameters for transmit
Parameter 9: (MD 738...) minimum speed for transmit.
[Unit: units(IS)/IPO cycle]
Recommended value 10
On standard machines, the fictitious system rotates through the real machine coordinate
system.
In this case, the rotation begins with the 3rd real axis ( X ). The angle through which the
fictitious coordinate system is rotated, must be negated by a right-handed coordinating system
(see angle definition pictured above).
The angles, through which the fictitious coordinate system is rotated, are - in the case of a
Gimbal head millhead - equivalent to those of the axis positions of the rotary axis if these are
set up according to the norm in the direction of rotation.
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SINUMERIK 840C (IA)