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.
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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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