Trying to Configure Dual Y Axis

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15 Jul 2023 00:53 - 15 Jul 2023 01:08 #275470 by JPL
Replied by JPL on topic Trying to Configure Dual Y Axis
Not 100% sure, maybe Tommy could confirm but I think that one of the first thing to do is:

replace net ystep => parport.0.pin-04-out    with   net y0step => parport.0.pin-04-out
replace net ydir => parport.0.pin-05-out       with   net y0dir => parport.0.pin-05-out

replace net ystep => parport.0.pin-08-out    with   net y1step => parport.0.pin-08-out
replace net ydir => parport.0.pin-09-out       with   net y1dir => parport.0.pin-09-out

 
Last edit: 15 Jul 2023 01:08 by JPL. Reason: Bold to make it easier to read

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15 Jul 2023 01:05 #275472 by Routerworks
Good catch. I'll change them.

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15 Jul 2023 01:09 #275473 by Routerworks
Limit switches on all axis. Dont need it now but eventually.
Don't need to square gantry.
Both ca run at the same time.

Thanks
The following user(s) said Thank You: tommylight

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15 Jul 2023 01:42 #275475 by tommylight

Limit switches on all axis. Dont need it now but eventually.
Don't need to square gantry.
Both ca run at the same time.

Thanks

In that case, make a new config, choose XYZ, and ONLY add the Y motor outputs twice. The same thing you did already, just do not edit anything.
Save, start and test.
This only works with one home switch for Y axis, and can be used with shared switches.
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FYI, you can not have a tandem axis with home switches shared for all axis, maybe there is a way of having one Y joint with X and the other Y joint with Z axis, but never tried it so not sure it will work. It should though.
And by shared i do not mean home/limit shared, i mean a single input for more that one home switch.

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15 Jul 2023 17:07 #275518 by Routerworks
Making progress.  The program now loads without any errors.  That's the good news.
The X axis seems to work fine.  However the "page up, page down" buttons that normally move the Z axis show movement of the Y axis on the screen.  Don't have the motors hooked up yet.  The normal up down arrows that usually move the y axis don't show any movement on the screen but do exhibit a travel speed.  
Seems like there is a "net" problem connecting the correct signals to the correct "joints".  After starring at these files for hours I'm just not seeing it,  hopefully someone else might see it.
I know Tommylight suggested getting rid of the Y0, Y1 labels and going back to just "y".  haven't tried that yet but will if this doesn't work.  Didn't want to reverse the progress (?)  I've made so far.

Really appreciate the help.
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15 Jul 2023 18:06 #275521 by JPL
Replied by JPL on topic Trying to Configure Dual Y Axis

However the "page up, page down" buttons that normally move the Z axis show movement of the Y axis on the screen.
 


This is 'normal' if it does happen when your machine is not homed. For a gantry machine you MUST home all axis before being able to jog correctly. Even immediate homing will work and will 'link' joint yo and y1.

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15 Jul 2023 18:11 - 15 Jul 2023 18:13 #275522 by JPL
Replied by JPL on topic Trying to Configure Dual Y Axis
Ohhh!

This wrong:  Joint 1 HOME_SEQUENCE=-2
Get rid of the 'Joint 1' part of the line.
You should have only : HOME_SEQUENCE=-2

Same for all joints

And also there a bunch of thing missing.
Follow the instruction here: linuxcnc.org/docs/html/config/ini-homing.html#_immediate_homing

 
Last edit: 15 Jul 2023 18:13 by JPL.

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15 Jul 2023 18:11 #275523 by Routerworks
Thanks for your reply. I just opened the software and homed all 3 axis in place.
What was the Z control still moved the y axis on the screen. Can't move Z axis

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15 Jul 2023 18:14 #275524 by Routerworks
Should I change the X and Z axis as well?

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15 Jul 2023 18:14 #275525 by JPL
Replied by JPL on topic Trying to Configure Dual Y Axis
Just edited my post above.
Please read the second part as homing will not work the way it is now.

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