Siemens SINUMERIK 828D

Path traversing behavior
8.8 Programmable contour/orientation tolerance (CTOL, OTOL, ATOL)
Job planning
Programming Manual, 07/2010, 6FC5398-2BP40-0BA0
491
Command for programming an axis-specific tolerance
ATOL is valid for:
• All compressor functions
• ORISON orientation smoothing
• All rounding types except G641, G644, OSD
<axis>: Name of the axis for which an axis tolerance is to be programmed
The value for the axis tolerance will be specified as a length or an
angle dependent on the axis type (linear or rotary axis).
Type: REAL
for linear axes: inch/mm (dependent on the
current dimensions setting)
ATOL
<value>:
Unit:
for rotary axes: degrees
Note
CTOL and OTOL have priority over ATOL.
General conditions
Scaling frames
Scaling frames affect programmed tolerances in the same way as axis positions; in other
words, the relative tolerance remains the same.
Example
Program code Comment
COMPCAD G645 G1 F10000 ; Activate COMPCAD compressor function.
X... Y... Z... ; The machine and setting data is applied here.
X... Y... Z...
X... Y... Z...
CTOL=0.02 ; A contour tolerance of 0.02 mm is applied
starting from here.
X... Y... Z...
X... Y... Z...
X... Y... Z...
ASCALE X0.25 Y0.25 Z0.25 ; A contour tolerance of 0.005 mm is applied
starting from here.
X... Y... Z...
X... Y... Z...
X... Y... Z...
CTOL=–1 ; The machine and setting data is applied again
starting from here.
X... Y... Z...
X... Y... Z...
X... Y... Z...