XY Position Confusion
- footpetaljones
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29 Oct 2017 19:03 - 29 Oct 2017 19:03 #100980
by footpetaljones
XY Position Confusion was created by footpetaljones
I am struggling to figure out how the physical position of my table needs to be communicated to match where LinuxCNC thinks it is.
I would like my mill to home the table in the front left corner when looking down. I am trying to set my home locations so that each axis is displayed as going from 0 to max travel. For the X axis, having the table all the way to the left corresponds to it being at max travel, correct (in my case 7.8")? And the same for the Y axis, 3.9" for me? Or do I have it backwards and the front left corner would by X0 Y0?
From messing with the step and direction pins, it seems like in order to have the display and the table both at the front left corner I have to invert the direction pin so that pushing the left arrow key moves the table to the right.
Thank you
I would like my mill to home the table in the front left corner when looking down. I am trying to set my home locations so that each axis is displayed as going from 0 to max travel. For the X axis, having the table all the way to the left corresponds to it being at max travel, correct (in my case 7.8")? And the same for the Y axis, 3.9" for me? Or do I have it backwards and the front left corner would by X0 Y0?
From messing with the step and direction pins, it seems like in order to have the display and the table both at the front left corner I have to invert the direction pin so that pushing the left arrow key moves the table to the right.
Thank you
Last edit: 29 Oct 2017 19:03 by footpetaljones.
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- InMyDarkestHour
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29 Oct 2017 20:55 - 29 Oct 2017 20:57 #100992
by InMyDarkestHour
Replied by InMyDarkestHour on topic XY Position Confusion
You may wan to look at this diagram
linuxcnc.org/docs/2.7/html/user/user-con...chine_configurations
When thinking of movement think of the table being stationary and the tool moving.
linuxcnc.org/docs/2.7/html/user/user-con...chine_configurations
When thinking of movement think of the table being stationary and the tool moving.
Last edit: 29 Oct 2017 20:57 by InMyDarkestHour.
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- footpetaljones
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29 Oct 2017 21:57 #100993
by footpetaljones
Replied by footpetaljones on topic XY Position Confusion
Thank you very much, that image was exactly what I needed to wrap my head around it. It all seems backwards but it does make sense.
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- InMyDarkestHour
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30 Oct 2017 01:12 #100997
by InMyDarkestHour
Replied by InMyDarkestHour on topic XY Position Confusion
To begin with it does, you just need to think it's the tool that moves, similar to a gantry type machine.
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