Help 'jogging' two axis at once

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12 Jul 2011 23:28 #11479 by eszyman
Oops! Sorry for the mis quote,
The command all on one line does not help, in fact if your quick enough on the button, only Y will move...
So short answer is no, not any less buggy... or at least still buggy.

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12 Jul 2011 23:57 #11480 by andypugh
Very odd.
If you Halscope the two jog pins, do you see any offset?

JT (on iRC) wondered if the axis accelerations were the same.

I can imagine connecting the jog button to some random HAL function (like an "or2") just to buffer it in HAL.

I think there are some slight velocity profiling differences between the "main" and "secondary" axes. Specifically I don't think that the overall max velocity applies to the secondaries. (it is very debatable whether it should apply to the primaries). You could try setting the [TRAJ] MAX_VELOCITY and MAX_ACCELERATION well out of the way of the individual [AXIS_N] MAX_VELOCITY and MAX_ACCELERATION

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13 Jul 2011 00:41 #11483 by btvpimill
all accel's are the same.

New question related, what is

•halui.mode.is-teleop (bit, out) - pin showing coordinated jog mode is on

coordinated jog mode? could this be the answer?

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13 Jul 2011 10:05 #11494 by Rick G
If the short button press pulse turns out to be the problem you could consider using a "oneshot" component and set it's output to a minimum length that works for the jog.
So you could try sending the button press to the input of a oneshot and the output of the oneshot to the halui.jogs

Rick G

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13 Jul 2011 13:53 #11496 by BigJohnT
Just a short quiz...

Are you running gantrykins?

After you home all 4 axis and switch to world mode does the gantry jog properly with the keyboard up/down arrow keys?

When you open up the Show Hal Configuration window and put

axis.0.motor-pos-cmd
axis.1.motor-pos-cmd
axis.2.motor-pos-cmd
axis.3.motor-pos-cmd

in the Watch window does axis 1 and 3 move the same amount when your in World Mode and using the keyboard?

John

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