Grantry milling config problem

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16 Sep 2018 14:15 #117605 by nonkeldw
Dear

I got some problems with the configuration from my milling machine.
I got a gantry milling machine with 2 motors on the X axis.

Little overview of my hardware:
I use the MESA 7i76E card and 5 stepper drives for controlling the motors.
My connections are made in the following order: XX Y Z.
I got also 2 homing switches on both sides of the X as.

I updated LinuxCNC from version 2.7 to 2.8. And I found already the hal and ini file from Rod.
Everything looks the same... but it doesn't work... I add my ini and hal file to this topic, and add also the files from Rod as reference.

There are strang things, when i push the Page-Up-Down button on the keyboard the Y axis is moving and not the Z axis??
I can't move the X axis then i got the error "the axis is are not homed".
Is it possible to help me with finding the bug in my configuration?

Thanks!
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16 Sep 2018 14:39 - 16 Sep 2018 14:44 #117606 by Clive S
For a start I think you need KINEMATICS = trivkins coordinates=XXYZ

I would also make the Z HOME_SEQUENCE = 0 and the Y HOME_SEQUENCE = 2

So that the Z will home first.
Last edit: 16 Sep 2018 14:44 by Clive S.

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16 Sep 2018 14:46 #117607 by nonkeldw
I think this is already done?
[KINS]
JOINTS = 4
KINEMATICS = trivkins coordinates=XXYZ

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16 Sep 2018 21:51 #117621 by andypugh

There are strang things, when i push the Page-Up-Down button on the keyboard the Y axis is moving and not the Z axis??!


Which axis moves on the screen? Which axis moves on the machine? Could it be a wiring error (in HAL or physical)

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16 Sep 2018 21:55 #117623 by tommylight
You have to home the machine before moving it.
It does move without homing but:
-If the DRO numbers are beyond the soft limits it will not move that axis,
-It is normal to move the Y axis with the pgup/pgdown buttons as that is the third joint
-You are in JOINT mode when starting, so you have to change to World mode to get the usual controls
-It will automatically go to World mode after homing

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17 Sep 2018 09:14 #117644 by rodw
Replied by rodw on topic Grantry milling config problem
With V 2.8, nothing can work until its homed. So confirming what Tommy says, press the home all button and see how it goes.
Homing is quite different between 2.7 and 2.8

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19 Sep 2018 16:22 #117749 by nonkeldw
Hi

I test the home all button, all my axis are homed in les than a second.. but the machine is not moving...

What do i wrong?

Thanks

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19 Sep 2018 16:34 #117750 by andypugh

I test the home all button, all my axis are homed in les than a second.. but the machine is not moving...

What do i wrong?


Your INI file does not contain HOME_SEARCH_VELOCITY and HOME_LATCH_VELOCITY for each axis.

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19 Sep 2018 16:55 - 19 Sep 2018 19:02 #117752 by nonkeldw
Thanks

The machine is moving and homed.

What is the best method for square the machine?

Thanks.
Last edit: 19 Sep 2018 19:02 by nonkeldw.

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19 Sep 2018 19:05 #117757 by andypugh
The HAL configuration looks right for the config you describe.
So perhaps some physical wires are crossed somewhere?
It might also be that the Y home switch is wired to the Z input too. (unless they share a pin)

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