The other codes listed are all to do with offsets, or specialist drilling moves, or metric and imperial, etc, to make the first four codes do the job at the correct place - and, quite frankly are ignored by a lot of the Cam programs, which simply write what they want to do in the first 2 codes, G0 and G1. These codes are all that is required to make your machine do meaningful work. Here, as before the finish points are required, together with a radius (R parameter) or a centre paramter (I or J or K). This is a circular arc, as opposed to a hyperbola or other type. The codes G2 and G3 are for cutting an arc. what your motors are set at for top speed by using G0, or you can use G1 where you can specify the speed the axis(es) travel at - using F (Feed) in units per minute. If you mention one axis in the line, than one axos moves, if your mention two axis, then both move simultaneously in time with each other, and if you mention 3 axis at one time you are better than me - but the same rule applies - all axis move simultaneously. The X and Y axis have co-ordinates, and a line of code tells your machine to move from where it is (it knows where it is) to a new location. There is no better way to learn GCode (and Mach 3) than by sitting down and doing it.īasic GCode is very simple.
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