Siemens SINUMERIK 840D sl Programming Manual page 506

Tool offsets
7.8 Tool holder kinematics
Note
Explanations of parameters
"m" specifies the number of the toolholder to be programmed.
$TC_CARR47 to $TC_CARR54 and $TC_CARR61 to $TC_CARR63 are not defined and
produce an alarm if read or write access is attempted.
The start/endpoints of the distance vectors on the axes can be freely selected. The rotation
angles α
this way, the kinematics of a toolholder can be programmed for any number of possibilities.
Toolholders with only one or no rotary axis at all can be described by setting the direction
vectors of one or both rotary axes to zero.
With a toolholder without rotary axis the distance vectors act as additional tool
compensations whose components cannot be affected by a change of machining plane (G17
to G19).
Parameter extensions
Parameters of the rotary axes
The system variables have been extended by the entries $TC_CARR24[m] to
$TC_CARR33[m] and described as follows:
Offset of rotary axes
v , v
1
The angle
offset/angle
increment of the
rotary axes v
The minimum and
maximum position of
the rotary axes v
506
, α about the two axes are defined in the initial state of the toolholder by 0°. In
1 2
Changing the position of the rotary axis v
oriented toolholder.
2
The offset or the angle increment of the Hirth tooth system of the rotary axes
v and v
1
that results from phi = s + n * d when n is an integer.
, v
1 2
The minimum and maximum position of the rotary axis limit angle (software
limit) of the rotary axes v1 and v2.
, v
1 2
. Programmed or calculated angle is rounded up to the next value
2
Programming Manual, 06/2009, 6FC5398-2BP20-0BA0
or v for the initial setting of the
1 2
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