G03 – Circular Interpolation (Counter Clockwise)
G03 moves along a counter-clockwise arc from the current position to the end point. Define the arc centre with incremental I, J, K offsets from the start point, or the radius with R.
Syntax
G03 X50 Y40 I0 J30
Modal
Yes – Group 1
I, J, K
Always incremental on MASSO
Parameters
CAUTION
R isn't supported for arcs over 90°, because more than one arc centre is possible. Use I, J and K for arcs over 90°.Example – arc
N10 G00 X20 Y10 Z-1 N20 G03 X50 Y40 I0 J30
Example – spiral arc
Adding a Z value to G03 creates a spiral (helical) arc.
N10 G00 X20 Y10 Z0 N20 G03 X50 Y40 Z-3 I0 J30
INFORMATION
Units are inches or millimetres, depending on the machine setup and whether G20 or G21 is active.
