Siemens SINUMERIK 840D sl Programming Manual

Plane for the circular interpolation
The control needs the working plane parameter (Page 145) to calculate the direction of rotation
for the circle (G2 is clockwise or G3 is counter-clockwise).
=
<
*
*
*
*
*
*
;
*
*
*
Exception:
It is also possible to create circles outside the selected working plane (not with opening angle
and helix parameters). In this case, the axis identifiers that the programmer specifies as circle
end point determine the circle plane.
2.9.6.2 Circular interpolation with center point and end point (G2/G3, X... Y... Z..., I... J... K...)
Circular interpolation version, that uses the center point and end point of a circular contour
element for the interpolation.
If the circle is programmed without an end point, the result is a full circle.
Syntax
G2/G3 X… Y… Z… I… J… K…
G2/G3 X… Y… Z… I=AC(…) J=AC(…) K=(AC…)
Meaning
G2: Circular interpolation clockwise
Effective: Modal
G3: Circular interpolation counter-clockwise
Effective: Modal
Fundamentals
2.9 Motion commands
NC programming
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0 189

Siemens SINUMERIK 840D sl Specifications

General

Control Type	CNC
Number of Axes	Up to 31
Max Number of Channels	10
Interfaces	Ethernet, PROFIBUS, PROFINET, USB
Interpolation	5-axis interpolation
Operating Temperature	0°C to 45°C
Relative Humidity	Up to 95% (non-condensing)
Display	TFT color display, various sizes
Programming Languages	DIN/ISO
Safety Features	Safety Integrated
PLC	Integrated PLC S7-300
Drive Interface	SINAMICS S120
Data Storage	CF card, USB
Operating System	Windows-based