Machsupport Forum

Mach Discussion => General Mach Discussion => Topic started by: gunther on December 02, 2018, 11:03:36 AM

Title: Coordinates maching axis movement gut G-code position is bad
Post by: gunther on December 02, 2018, 11:03:36 AM

Hi all

I got a strange problem on a newly configured machine.

When i move my axis 100mm the DRO shows 100.000 so that works.
When i zero my DRO and then enter G1 X10 the axis moves 20mm the DRO allso shows 20.00

Scaling is 1,000

Can anyone tell me where to look to solve this?

Title: Re: Coordinates maching axis movement gut G-code position is bad
Post by: ger21 on December 02, 2018, 05:25:46 PM

How are you moving the 100mm that is correct?

Title: Re: Coordinates maching axis movement gut G-code position is bad
Post by: gunther on December 02, 2018, 10:56:51 PM

Hi
The correct movement was done by jogging pressing the keyboard of the pc.

greetings

Title: Re: Coordinates maching axis movement gut G-code position is bad
Post by: gunther on December 21, 2018, 05:21:05 AM

Hi,

I have startend over with a new configuration and configured all over.
Unfortunaly this did not solve the problem.

Moving the axis 100mm by jogging pressing the keyboard shows on the DRO 100mm
Entering G0 X10 the axis moved to 12mm the DRO shows 10mm
Entering G1 X10 the axis moved to 20mm the DRO shows 20mm
I have no idea what to do next.

Help please im desperate.
Greetings,

Title: Re: Coordinates maching axis movement gut G-code position is bad
Post by: ger21 on December 21, 2018, 06:46:39 AM

Sounds like you are in Incremental (G91) mode. Change to Absolute mode (G90).

Title: Re: Coordinates maching axis movement gut G-code position is bad
Post by: gunther on December 21, 2018, 08:02:44 AM

Ger, thanks for your reply. I tryed what you said but no joy.

I have uploaded a Lille movie of what happens.

https://m.youtube.com/watch?v=UvJmUCkG7TM

Greetings,

Title: Re: Coordinates maching axis movement gut G-code position is bad
Post by: gunther on December 24, 2018, 07:36:06 AM

Wow i used a newer laptop to drive the machine with the same configuration file.
Guess what....
All Works as expected now!
Can't believe the problem was the computer.

Thanks for the feedback!

Title: Re: Coordinates maching axis movement gut G-code position is bad
Post by: Sam on December 25, 2018, 12:09:33 AM

Thanks for reporting back your findings!