Mfrost: /* Using Incremental Motion */

2010-10-06T12:29:27Z

‎Using Incremental Motion

Jbeck at 21:21, 1 October 2010

2010-10-01T21:21:44Z

Jbeck: Created page with "The following should help you get familiar with some of the common g-code commands. == Using Absolute Motion == This program uses absolute motion to cut a four-sided figure wit..."

2010-10-01T21:21:05Z

Created page with "The following should help you get familiar with some of the common g-code commands. == Using Absolute Motion == This program uses absolute motion to cut a four-sided figure wit..."

New page

The following should help you get familiar with some of the common g-code commands.

== Using Absolute Motion ==

This program uses absolute motion to cut a four-sided figure with rounded corners.

<pre>
G90
M91 OUT1
M91 OUT2
G1 Z-0.50
G1 Y2.00
G2 X1.00 Y3.00 I1.00 J0.00
G1 X4.00
G2 X5.00 Y2.00 I0.00 J-1.00
G1 Y0.00
G2 X4.00 Y-1.00 I-1.00 J0.00
G1 X1.00 Y-1.00
G2 X0.00 Y0.00 I0.00 J1.00
G0 Z0.00
M90 OUT2
M90 OUT1
</pre>

[[File:Gcode_foursidedfigure.gif|thumb|right|Four-sided figure using linear moves and arcs]]

In this example, the first command indicates that absolute motion
will be used to execute the commands that follow. Output 1 and
output 2 are turned on. Then, a linear move brings the Z axis down
to the -0.5 position. A linear cut is made when the Y axis moves to
the +2 position. Next, a clockwise arc is made along the XY plane.
When making this arc, the X axis moves to the +1 position, and the
Y axis moves to the +3 position. The X and Y axes move clockwise
around a center point whose coordinates are 1 unit away in a
positive direction along the X axis and the current position of the Y
axis.

After the arc is executed, a linear cut is made along the X axis to the
+4 position. Then, another clockwise arc is then executed in the XY
plane. To make this arc, the X axis moves to the +5 position, and the
Y axis moves to the +2 position. The X and Y axes move clockwise
around a center point that is equal to the current position of the X
axis and is 1 unit away in a negative direction along the Y axis. An
additional cutting move brings the Y axis to 0.
For the next arc, which is also made in the XY plane, the X axis
moves to the +4 position, and the Y axis moves to the -1 position.
The X and Y axes move clockwise around a center point that is 1
unit away in a negative direction along the X axis and is equal to
the current position of the Y axis. Then, a linear cutting move is
executed, bringing the X axis to the +1 position, and the Y axis to
the -1 position.

The final arc connects the last linear cut made along the XY axis
with the first linear cut. This arc, also a clockwise arc in the XY
plane, is created when the X and Y axes both move to the 0 position.
The X and Y axes move clockwise around a center point that is
equal to the current position of the X axis and is 1 unit away in a
positive direction along the Y axis. Then, the Z axis rapids up to the
0 point, and outputs 2 and 1 are turned off.

== Using Incremental Motion ==

This program uses absolute motion to cut a four-sided figure with rounded corners.

<pre>
G91
M91 OUT1
M91 OUT2
G1 Z-0.50
G1 Y2.00
G2 X1.00 Y1.00 I1.00 J0.00
G1 X3.00
G2 X1.00 Y-1.00 I0.00 J-1.00
G1 Y-2.00
G2 X-1.00 Y-1.00 I-1.00 J0.00
G1 X-3.00
G2 X-1.00 Y1.00 I0.00 J1.00
G0 Z0.50
M90 OUT2
M90 OUT1
</pre>

[[File:Gcode_foursidedfigure.gif|thumb|right|Four-sided figure using linear moves and arcs]]

In the example above, the first command indicates that incremental motion will be used to execute the commands that follow. Output 1 and output 2 are turned on. Then, a linear move brings the Z axis to a position that is 0.5 units away in a negative direction from its current position. A linear cut is made when the Y axis moves 2 units in a positive direction away from its current position. Next, a clockwise arc is made along the XY plane. When making this arc, the X axis moves to a position that is 1 unit away in a positive direction from its current position, and the Y axis moves to a position that is 1 unit away in a positive direction from its current position. The X and Y axes move clockwise around a center point that is 1 unit away in a positive direction along the X axis and is equal to the current position of the Y axis.

After the arc is executed, a linear cut is made along the X axis to a position that is 3 units away in a positive direction from its current position. Then, another clockwise arc is executed in the XY plane. To make this arc, the X axis moves 1 unit away in a positive
direction and the Y axis moves 1 unit away in a negative direction from their current positions. The X and Y axes move clockwise around a center point that is equal to the current position of the X axis and is 1 unit away in a negative direction along the Y axis from its current position. A linear cutting move then brings the Y axis to a position that is 2 units away in a negative direction from its current position.

For the next arc, which is also made in the XY plane, the X axis moves 1 unit in a negative direction, and the Y axis moves 1 unit in a negative direction from their current positions. The X and Y axes move clockwise around a center point that is 1 unit away in a negative direction along the X axis and is equal to the current position of the Y axis. Then, a linear cutting move is executed, bringing the X axis to a position that is 3 units away in a negative direction from its current position.

The final arc connects the last linear cut made along the XY axis with the first linear cut. This arc, also a clockwise arc in the XY plane, is created when the X axis moves 1 unit in a negative direction and the Y axis moves 1 unit in a positive direction from their current positions. The X and Y axes move clockwise around a center point that is equal to the current position of the X axis and is 1 unit away in a positive direction along the Y axis. After the arc is completed, the Z axis rapids to a position that is .5 unit away in a positive direction from its current position. Finally, output 2 and then
output 1 are turned off.

[[Category:Software]]
[[Catetory:Manual]]

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 == Using Incremental Motion ==
-This program uses absolute motion to cut a four-sided figure with rounded corners.
+This program uses incremental motion to cut a four-sided figure with rounded corners.
 <pre>

G-code examples - Revision history

Mfrost: /* Using Incremental Motion */

Jbeck at 21:21, 1 October 2010

Jbeck: Created page with "The following should help you get familiar with some of the common g-code commands. == Using Absolute Motion == This program uses absolute motion to cut a four-sided figure wit..."