re:Re: G92 and M99 code/cncpro

Smoke,

Gotta disagree. The block format of the G81 code is correct. For it
to happen the way you suggest means that the R (release, or clearance
plane) is shifting down also. This "should NOT" happen!

In other words, each drill cycle returns to a fixed plane at .5 units
above the material surface (assuming zero is at material surface).
Then at the next cycle it will again go down (in Z) 1 unit into the
material. The G91 is there so that the "whole drill cycle" will move
5 units in x each iteration.

Gcode experts, Have I got that right?

Ballendo

>The reason your spindle moves down during the move is because you
>have a Z-1 move included WITHIN the parameters for the G91 move.
>Move the Z-1 motion to a separate line PRECEDING the G91 command.
>That should fix it.
>Smoke

>> G91 (makes measurement relative)
>> G81 R.5 Z-1 X5 L50
>>tauseef