Siemens sinumerik 840d Programming Manual page 298

Tool Offsets
8
8.8 Toolholder kinematics
840D
NCU 572
NCU 573
Clearing the toolholder data
The data of all toolholder data sets is cleared via
$TC_CARR1[0] = 0.
Ab SW 5.3
The type of kinematics $TC_CARR23[T] = T must
be preassigned one of the three permissible
uppercase or lowercase letter (T,P,M) and should
not be deleted.
Changing the toolholder data
Each of the described values can be modified by
assigning a new value in the part program.
As of SW 5.3
By preassigning the type of kinematics, you have
only the following three options:
1. T: Only the tool (Tool) can rotate.
2. P: Only the workpiece (Part) can rotate.
3. M: Part and tool (Mixed mode) can rotate,
corresponding to resolved kinematics.
Any other character, except for the three above,
causes an alarm when you attempt to activate the
orientable toolholder.
Reading the toolholder data
Each of the described values can be read by
assigning it to a variable in the part program.
Supplementary conditions
A toolholder can only orientate a tool in every possible
direction in space if
– there are two rotary axes.
– the rotary axes are positioned perpendicular to one
another.
– the tool length axis is perpendicular to the second
rotary axis.
As of SW 5.3
The following also applies to machine where both
axes must rotate the table so that
– the tool orientation is perpendicular to the
first rotary axis.
8-298
840Di
SINUMERIK 840D/840Di/810D/FM-NC Programming Guide Advanced (PGA) − 04.00 Edition
04.00
8
 Siemens AG 2000. All rights reserved