Machsupport Forum

Mach Discussion => General Mach Discussion => Topic started by: foxy on January 29, 2008, 12:02:11 PM

Title: z starts down but x and y are already moving
Post by: foxy on January 29, 2008, 12:02:11 PM

hi I'm Foxy, first time on and I have a stupid problem I am trying to do some engraving and what happens is that it goes to x and y and z starts down but x and y are already moving so cut depth is like a lead in it must be simple like me any help

Foxy

Title: z starts down but x and y are already moving
Post by: Ian Ralston on January 30, 2008, 05:03:35 AM

Foxy,

G code is line logigal. If you put X, Y, Z values on one G0 line Mach will execute them all at the same time. To do what you want, you need to do  G01 Z (Value) F (Value) This will feed Z into the material, then on the next line G01 X (Value) Y(Value) F (Value), this will cut from your starting point to the new X,Y.

Ask again in the Mach General Discussion forum if this isn't clear.

Ian

Title: z starts down but x and y are already moving
Post by: foxy on January 31, 2008, 01:31:53 PM

HI THANKS FOR THAT I SORT OF UNDERSTAND NOW, DO YOU HAVE TO PUT THE FEED RATE ON EVERY LINE

FOXY

Title: z starts down but x and y are already moving
Post by: Graham Waterworth on January 31, 2008, 02:31:35 PM

No, just every time you want the feed to change.

Graham.

Title: z starts down but x and y are already moving
Post by: Ian Ralston on January 31, 2008, 05:05:00 PM

Foxy,

Certain G codes are "modal". This means that when you use them, they remain at that value or mode until changed or cancelled. Feed rate "F" is one of them. Now you know the magic word, search in the manual for the list of modal commands.

Ian