MASSO
MASSO Documentation
8.4. G03 – Circular Interpolation (Counter Clockwise)
This command runs a circular motion in a counter clockwise direction. The arc starts at the current position
and the center is defined by the I, J values as an offset of the current position or R for radius. The X & Y
values define the finish point. Masso uses Incremental I & J values for Arcs
Syntax & Parameters
G03 starts an arc movement beginning at the X & Y coordinate location where the G03 was issued.
X Value – This is the X coordinate defining the end point
Y Value – This is the Y coordinate defining the end point
I Value – are relative coordinates and define the X center coordinate as an offset of the starting point
X coordinate.
J Value – are relative coordinates and define the Y center coordinate as an offset of the starting point
Y coordinate.
Z Value - The addition of a Z value will describe a helical move.
R Value - Is used to define the arc radius for arcs up to 90 degrees.
Caution: The use of R Value for arcs greater than 90 degrees do not work as it defines multiple
centre points. For arcs greater that 90 degrees use IJK values for G03 commands.
Example program for making an Arc
N10 G00 X20 Y10 Z-1 N20 G03 X50 Y40 I0 J30
In the above example in the first line moves to position X20 Y10 Z-1
An arc is made starting at position X20 Y10 and ending at coordinate X50 Y40 with center at position
X20 Y40 moving in a counter clockwise direction. The Z height does not change.
The Arc center is calculated as follows
Starting position X20 + I0 = Center X coordinate X20
Starting position Y10 + J30 = Center Y coordinate Y40
v5.18 - 08 Apr,2021
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