Data Lists; Machine Data; Axis/Spindlespecific Machine Data; System Variables - Siemens SINUMERIK 840D sl Function Manual

T3: Tangential control - 840D sl only

11.7 Data lists

Example Corner in area
Programming
TANG(A,X,Y,1.0,"B")
TLIFT(A)
G1 G641 X0 Y0 Z0 A0
TANGON(A,0)
N4 X10
N5 Z10
N6 Y10
M30
Here, a corner is hidden in the area between N4 and N6. N6 causes a tangent jump. That is
why there is no rounding between N5 and N6 and an intermediate block is inserted.
In the case of a hidden corner in area, an intermediate block is inserted before the block that
has caused the tangent jump. The intermediate block moves the following axis to the new
tangent position.
11.7 Data lists
11.7.1

Machine data

11.7.1.1

Axis/spindlespecific machine data

Number Identifier: $MA_
37400 EPS_TLIFT_TANG_STEP
37402 TANG_OFFSET
11.7.2

System variables

Identifier
$AC_BLOCKTYPE
516
Description
Tangential angle for corner recognition
Default angle for tangential follow-up control
Description
Current block is an intermediate block generated by TLIFT
Function Manual, 01/2015, 6FC5397-2BP40-5BA2
Special functions