Siemens SINUMERIK 828D Programming Manual page 440

Tool offsets
7.9 Tool length compensation for orientable toolholders (TCARR, TCOABS, TCOFR, TCOFRX, TCOFRY,
TCOFRZ)
Significance
TCARR=[<m>]
TCOABS
TCOFR
TCOFRZ
TCOFRY
TCOFRX
Further Information
Determine tool length compensation from the orientation of the toolholder (TCOABS)
TCOABS
toolholder; saved in the system variables $TC_CARR13 and $TC_CARR14.
For a definition of toolholder kinematics with system variables, see "Toolholder kinematics
(Page 434)".
In order to make a new calculation of the tool length compensation when frames are
changed, the tool has to be selected again.
Tool direction from active frame
The toolholder with orientation capability is set so that the tool points in the following
directions.
● with
● with
● with
The tool length compensation is re-calculated when changing over between
TCOABS
Request toolholder (TCARR)
With
memory).
With m=0, the active toolholder is deselected.
The geometry data of the toolholder only become active after a tool is called. The selected
tool remains active after a toolholder change has taken place.
The current geometry data for the toolholder can also be defined in the part program via the
corresponding system variables.
Recalculation of tool length compensation (TCOABS) for a frame change
In order to make a new calculation of the tool length compensation when frames are
changed, the tool has to be selected again.
440
: Request toolholder with the number "m"
: Determine tool length components from the orientation of the current
toolholder
: Determine tool length components from the orientation of the active frame
: Orientable toolholder from active frame with a tool pointing in the Z
direction
: Orientable toolholder from active frame with a tool pointing in the Y
direction
: Orientable toolholder from active frame with a tool pointing in the X
direction
calculates the tool length compensation from the current orientation angles of the
or in the Z direction
TCOFR TCOFRZ
in the Y direction
TCOFRY
in the X direction
TCOFRX
.
, the toolholder number m is requested with its geometry data (compensation
TCARR
Programming Manual, 07/2010, 6FC5398-2BP40-0BA0
and
TCOFR
Job planning