Hello Guest it is November 20, 2019, 06:27:33 AM

Author Topic: Mach3 Ignores Feedrates In G Code  (Read 4941 times)

0 Members and 1 Guest are viewing this topic.

Offline RS

*
  •  9 9
    • View Profile
Mach3 Ignores Feedrates In G Code
« on: February 07, 2012, 10:09:18 AM »
Hi,
     Mach3 ignores the feed rates in my g code unless I change the "S" in the spindle DRO from 0 to 1.  The problem is that I can't figure out how to save it at 1 and I have to reset it by hand every time I open Mach3.  It is getting tiresome.  Any ideas?  Thank you.

RS

Offline Hood

*
  •  25,856 25,856
  • Carnoustie, Scotland
    • View Profile
Re: Mach3 Ignores Feedrates In G Code
« Reply #1 on: February 07, 2012, 11:36:31 AM »
Feedrates should be in code, also spindle speeds and M3/M4 likewise.
Hood

Offline RS

*
  •  9 9
    • View Profile
Re: Mach3 Ignores Feedrates In G Code
« Reply #2 on: February 07, 2012, 11:56:28 AM »
The feedrates are in the code.  The spindle speed is manual on my lathe.  So what would I have to add to the code?

M03
G97 S1

Or something like that?
Re: Mach3 Ignores Feedrates In G Code
« Reply #3 on: February 07, 2012, 01:28:06 PM »
If you go into Config/General Config, on the page there is a place to put code which is run on first start up (Initialisation string).
Re: Mach3 Ignores Feedrates In G Code
« Reply #4 on: February 07, 2012, 01:51:01 PM »
Turn (G94) or Mill ?

 

Offline Hood

*
  •  25,856 25,856
  • Carnoustie, Scotland
    • View Profile
Re: Mach3 Ignores Feedrates In G Code
« Reply #5 on: February 07, 2012, 02:03:47 PM »
Are you in G95?
Hood
Re: Mach3 Ignores Feedrates In G Code
« Reply #6 on: February 07, 2012, 02:13:24 PM »
Nice catch Hood.  :D

Offline Hood

*
  •  25,856 25,856
  • Carnoustie, Scotland
    • View Profile
Re: Mach3 Ignores Feedrates In G Code
« Reply #7 on: February 07, 2012, 02:16:20 PM »
It is what I was thinking from the start Russ and why I said the spindle needs turned on. I am presuming this is the sherline lathe he was asking about earlier.
Hood

Offline RS

*
  •  9 9
    • View Profile
Re: Mach3 Ignores Feedrates In G Code
« Reply #8 on: February 07, 2012, 05:04:29 PM »
Yes, there is a G95 at the top of the code.

Offline Hood

*
  •  25,856 25,856
  • Carnoustie, Scotland
    • View Profile
Re: Mach3 Ignores Feedrates In G Code
« Reply #9 on: February 07, 2012, 05:13:43 PM »
That is why then, G95 is feed per rev mode so if you do not have any spindle speed Mach can not really feed per rev. What are your feedrates? In other words are your meant to be feeding per rev or per min? Lathes usually work in g95 but really you need spindle speed feedback for that to work correctly.
Hood