Activating The Coupling (Tangon) - Siemens SINUMERIK 840D sl Programming Manual

Activating intermediate block generation
If TLIFT(...) is programmed after TANG(...), an intermediate block automatically generated by
the control is inserted at this point when a corner is detected during preprocessing.
When the program is executed, the leading axes are stopped when the intermediate block is
reached. In the intermediate block, the following axis is rotated with maximum axis dynamics
toward the path tangent of the following block. The leading axes are then traversed further on
the programmed path.
Deactivating intermediate block generation
To deactivate intermediate block generation, the tangential coupling must be defined again
using TANG(...), but without subsequent activation of intermediate block generation by means
of TLIFT(...).
Syntax
TLIFT(<following axis>)
Meaning
TLIFT(...):
<following axis>:
Speed of rotation of the following axis
Path axis
If the following axis had already been traversed as a path axis before tangential coupling was
activated, the rotational movement is performed in the intermediate block as a path axis.
If you specify the reference radius with FGREF[<axis>]=0.001, the rotational movement will
be performed with the parameterized maximum axis velocity:
MD32000 $MA_MAX_AX_VELO[<following axis>]
Positioning axis
If the following axis had not yet been traversed as a path axis before tangential coupling was
activated, the rotation is performed in the intermediate block as a positioning axis.
The rotational movement is performed with the parameterized positioning axis velocity:
MD32060 $MA_POS_AX_VELO[<following axis>]
3.16.7.3

Activating the coupling (TANGON)

Via the predefined procedure TANGON(...), a tangential coupling previously defined
with TANG(...) (Page 940) is activated. The following axis is then continuously aligned with the
path tangent during subsequent travel.
NC programming
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
Activate corner detection with intermediate block calculation
Axis name of the following axis (rotary axis)
Data type: AXIS
Range of values: Channel axis names
Work preparation
3.16 Axis couplings
943