Siemens SINUMERIK 840D sl Function Manual page 237

Programming
The tolerance factor set using MD20560 $MC_G0_TOLERANCE_FACTOR can be temporarily
overwritten by programming STOLF in the part program:
Syntax
STOLF = <tolerance factor>
Meaning
STOLF:
<tolerance
factor>:
Example
In the following program section, the following tolerance factors apply alternately:
1. MD33100 $MA_COMPRESS_POS_TOL (contour tolerance at corners) ⇒ COMPCAD
(Page 227)
2. MD33120 PATH_TRANS_POS_TOL (contour tolerance for tangential transitions) ⇒ G645
3. MD20560 $MC_G0_TOLERANCE_FACTOR"
Contour deviation = (MD20560 $MC_G0_TOLERANCE_FACTOR) * (MD33100
$MA_COMPRESS_POS_TOL)
4. Programmable contour tolerance for traversing blocks ⇒ CTOL
5. Programmable contour tolerance for rapid traverse blocks ⇒ STOLF
Program code
COMPCAD G645 F10000
G1 X... Y... Z...
G0 X... Y... Z...
CTOL = 0.02
STOLF = 4
G1 X... Y... Z...
G0 X... Y... Z...
The value in MD20560 is not changed by programming the tolerance factor. After a reset or
end of part program, the value set using MD20560 is effective again.
Basic Functions
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Command to program the G0 tolerance factor
G0 tolerance factor
Value range: Tolerance factor > 0.0
X... Y... Z...
X... Y... Z...
X... Y... Z...
X... Y... Z...
X... Y... Z...
X... Y... Z...
B1: Continuous-path mode, Exact stop, Look Ahead
4.7 Tolerance and compression of G0 blocks
Comment
; Activation: Compressor function COMPCAD and G645
; Active tolerance factor
; Active tolerance factor
; Active tolerance factor
; Active tolerance factor
; Active tolerance factor
; Programmable contour tolerance for traversing blocks
; Programmable G0 tolerance factor
; Active tolerance factor
; Active tolerance factor
; Active tolerance factor
; Active tolerance factor
4
; Active tolerance factor
4
1. and 2.
1. and 2.
1. and 2.
2. and 3.
2. and 3.
4.
4.
4.
4. and 5. of 0.08 = 0.02 *
4. and 5. of 0.08 = 0.02 *
237