Incremental Dimensions (G91, X=Ic) - Siemens SINUMERIK 840DE Programming Manual

Positional Data
3.2 Absolute/relative dimensions
3.2.2

Incremental dimensions (G91, X=IC)

Function
With the G91 command or the non-modal statement IC, you determine the descriptive
system for approaching individual axes from setpoints in incremental dimensions.
You program how far the tool is to travel.
Programming
G91
Or
X=IC(...) Y=IC(...) Z=IC(...)
Parameters
G91
X Y Z
=IC
Example of milling
The dimensions refer to the last point approached.
The circle center point coordinates of the circle interpolation are stated non-modally in
absolute coordinates, since as default the circle center point is independent of G91.
For entering the circle center point coordinates I and J see circle interpolation G2/G3.
3-6
Relative incremental dimensioning
Axis identifiers of the axes to be traversed
Incremental dimensions non-modally effective
Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
Fundamentals