Siemens SINUMERIK 840DE - Page 441

Tables
12.3 List of G functions/preparatory functions
Fundamentals
Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
12-35
Group 17: Approach and retraction response, tool offset
Name No. Meaning X m/n SAG MM
NORM 1. Normal position at start and end points m Def.
KONT 2. Travel around contour at start and end points m
KONTT 3. Approach/traverse with continuous-tangent polynomial m
KONTC 4. Approach/traverse with continuous-curvature polynomial m
Group 18: Corner behavior, tool offset
Name No. Meaning X m/n SAG MM
G450 1. Transition circle
(tool travels round workpiece corners on a circular path)
m Def.
G451 2. Intersection of equidistant paths
(tool backs off from the workpiece corner)
m
Group 19: Curve transition at beginning of spline
Name No. Meaning X m/n SAG MM
BNAT 1. Begin natural: natural transition to first spline block m Def.
BTAN 2. Begin tangential: tangential transition to first spline block m
BAUTO 3. Begin not a node: (no node) Start is determined by the position of the
1st point
m
Group 20: Curve transition at end of spline
Name No. Meaning X m/n SAG MM
ENAT 1. End natural: natural transition to next traversing block m Def.
ETAN 2. End tangential: tangential transition to next traversing block at spline
begin
m
EAUTO 3. Begin not a node: (no node) End is determined by the position of the last
point
m
Group 21: Acceleration profile
Name No. Meaning X m/n SAG MM
BRISK 1. Fast non-smoothed path acceleration m Def.
SOFT 2. Soft smoothed path acceleration m
DRIVE 3. Velocity-dependent path acceleration m