(SOLVED!!!) Probe Basic - rotary axis jogging

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13 Oct 2021 04:30 #222999 by spumco
Have run in to a snag as I'm setting my my mill and I suspect it's Probe Basic-related and not HAL or INI.  Could be wrong, of course.

A-axis/joint-3 is set up as a rotary (typical 4th axis).  Steps per degree/unit are fine, and the max velocity is also fine.  It is not WRAPPED_ROTARY in the INI file.

When I home the axis it rotates at the expected speed and backs off properly from the home sensor.  When I command a move via MDI the speed is also as expected.

However, when I try to jog using the on-screen buttons, it's extremely slow.  Feedrate displayed jumps to "100" regardless of the jog % slider, and the axis moves about 1/10th the speed it should.  Jog slider has no effect on A-axis, but it works perfectly as expected for X/Y/Z.

Example:
MDI G0A20 is completed in 1 second(ish)
Holding the jog button takes 10 seconds to go from A0 to A20.

It feels like there's some scaling issue internal to PB, and I don't understand why the slider has no effect for one axis only.

Anyone else have a similar issue, or is there some setting I've overlooked?

Thx,
Ralph

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14 Oct 2021 22:31 #223131 by spumco
It would appear that I'm not the only one to notice this:

github.com/kcjengr/probe_basic/issues/53

Not sure if a second slider is needed, or perhaps someone could check if the jog velocity value is using the linear units instead of the angular units from the basic INI file.

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14 Oct 2021 23:25 #223135 by Joco
Having a quick look at the documentation for machine actions and specificlaly the actions for adjusting jog speed, there are separate ones for linear and angualr velocity.   I suspect that could be the issue.   But will need to have a snoop at the UI and code once work is over.
The following user(s) said Thank You: spumco

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15 Oct 2021 08:22 #223176 by Joco
I have checked and it would seem there is a gap in how the jog over-ride is implemented.  The slide in place is only operating on linear machine speed not on angular speed.  Will check with some people closer to UI in case I have missed something.

J.
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26 Oct 2021 03:50 #224322 by spumco
Any news on this issue?

I'm open to a workaround if necessary, but I'd need some hand-holding if it isn't beginner-level hal pin-signal connection stuff.

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26 Oct 2021 05:21 #224328 by TurBoss
if you could create a actionbutton and set ActionName to

machine.jog.axis:a,pos

or
machine.jog.axis:a,neg

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26 Oct 2021 22:49 #224437 by spumco
Maybe I'm nissing something, but there are already actionbuttons with ActionNames set to those values.

The issue is that when pressed, the jog velocity is based on the max linear jog velocity value (inch units), which is inappropriate for an angular axis (degrees)

 
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26 Oct 2021 22:55 #224439 by Joco
spumco - I'm working on a framework level fix so this is properly supported going forward.  It will also make it (in theory) trival to add a fix into the PB.

Coding is done just needs some broader testing/review.

Cheers - J.
 

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26 Oct 2021 23:01 #224441 by spumco
You're my new BFFTM

Thanks much.

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27 Oct 2021 01:23 #224455 by Joco
spumco - the way this will be able to be corrected in PB is to create a hidden jog angular % override slider.  This will be slaved off the master slider that is visible.  This "slaving" is done using normal signal connections to send the value from the master slider to hidden slave slider.  Thus when you shift the override jog slider to 70% then it will be 70% of Max Linear and Max Angular velocity as set in INI file.   See the documentation for the INI entries that can be used. for default and max angular velocity.

cheers - James.

 

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