Machsupport Forum

Mach Discussion => General Mach Discussion => Topic started by: william55 on June 13, 2016, 03:41:51 PM

Title: One last problem
Post by: william55 on June 13, 2016, 03:41:51 PM

Hi
Finally almost there on my set up, one last issue. I have a rectangle work area 24" x 96" my home is the bottom left corner. When I ref all, all axis home fine to the home spot. I load the road runner to test out the system it loads in the bottom left corner fine. I push start and the machine try's to move in opposite direction of the work, and out of my table workspace.
Went to homing and limits page  to uncheck and reverse X but all it does is move my home to right hand corner. How or what do I change to orient my movement in the proper direction. I don't know if this issue is affecting my Y and Z because off the direction movement it trips my limits right away.
Many thanks Bill

Title: Re: One last problem
Post by: william55 on June 13, 2016, 04:54:01 PM

Hi
Is it possible that the gcode in the roadrunner sample is written to move the axis in a certain direction and were I have chosen my home is not compatible/
Bill

Title: Re: One last problem
Post by: Tweakie.CNC on June 14, 2016, 05:21:31 AM

In the MDI screen, zero the X axis DRO, then input G0 X10
Press Return.
Does the X axis move in the + direction (to the right) and the DRO subsequently read +10.0000 ?

Tweakie.

Title: Re: One last problem
Post by: william55 on June 14, 2016, 03:25:19 PM

Hi
I did as you instructed and the X moved to the left but did read +10.000
Bill

Title: Re: One last problem
Post by: DICKEYBIRD on June 14, 2016, 05:34:27 PM

Ya' gotta be thinkin' which way the *TOOL* moves in relation to the table; not which way the table moves. ;D

Title: Re: One last problem
Post by: william55 on June 14, 2016, 06:05:04 PM

Hi
Sorry if I didn't explain it correctly, By machine I meant my Gantry, I assume I need to change a setting to reverse the tool direction  so when it is moving in the + direction the tool is moving to the right not left
Thanks Bill

Title: Re: One last problem
Post by: Tweakie.CNC on June 15, 2016, 01:38:07 AM

Go into Config. / Ports & Pins / Motor Outputs and change the Direction Low Active state for your X axis. This will reverse it's direction of travel.

Tweakie.

Title: Re: One last problem
Post by: william55 on June 15, 2016, 11:58:49 AM

Thanks
There are two, direct low active and step low active do I change both.
Thank you for the help
Bill

Title: Re: One last problem
Post by: Tweakie.CNC on June 15, 2016, 12:18:16 PM

No, just the Direction Low Active should be changed.

Tweakie.

Title: Re: One last problem
Post by: william55 on June 15, 2016, 12:57:39 PM

Hi
I changed the direct active low , the X moves to the + direction but the X now homes to the right side of the table. Is this were I must make may home when I Ref all home
Bill

Title: Re: One last problem
Post by: fixittt on June 15, 2016, 05:34:38 PM

William  Go to CONFIG>Homing/Limits  Change the setting for the HOMENEG for the offending axis.  This will make it home in the other direction.

Title: Re: One last problem
Post by: william55 on June 15, 2016, 09:47:15 PM

Thanks
Bill