That is super helpful, thanks!
Sent from my iPhone
> On Dec 19, 2023, at 6:31 AM, andy pugh wrote:
>
> On Mon, 18 Dec 2023 at 17:05, Alan Thomason via Emc-users
> wrote:
>
>> Is it possible to script in the initial file for the system to switch to
>> Machine ON (as long as there are no active limit switches).
>
> Halui is a program that replicates many of the actions that are
> otherwise handled in the GUI.
> http://linuxcnc.org/docs/stable/html/man/man1/halui.1.html
>
> In this case you would need to connect up the HAL pin halui.machine.on
>
> Does your machine start up in the e-stop active or e-stop inactive
> state? (This will depend on the wiring of the HAL e-stop loop) If it
> does then you will also have to toggle the halui.estop.reset pin.
> (And, having just checked, you can set them both at the same time, it
> needs to be estop.reset then machine.on)
>
> If the machine starts up in e-stop OFF then you probably just need a
> single line in a postgui halfile
> setp halui.machine.on 1
>
> If you also need to reset the e-stop then it's a little more involved.
> So, one way would be to set up a couple of cascaded one-shots in HAL,
> then trigger them on the postgui halfile.
>
> In the main (or custom) HAL:
>
> loadrt oneshot names=estop-pulse,machine-on-pulse
> addf estop-pulse servo-thread
> addf machine-on-pulse
> setp estop-pulse.rising 1
> setp estop-pulse.falling 0
> setp estop-pulse.width 1
> setp machine-on-pulse.rising 0
> setp machine-on-pulse.falling 1
> setp machine-on-pulse.width 1
> net e-reset estop-pulse.out => halui.estop.reset => machine-on-pulse.trigger
> net on-signal machine-on-pulse.out => halui.machine.on
>
> Then in the postgui HAL:
>
> setp estop-pulse.trigger 1
>
> The idea is that the postgui HAL first triggers a 1-second pulse to
> estop-reset, then the falling edge of that pulse triggers the
> machine-on.
>
> It would also be possible to trigger machine-on directly from the
> falling-edge of halui.estop.is-activated, but that would override the
> normal ui functions (the machine would _always_ turn on when the
> e-stop was released) and you might not want that.
>
> --
> atp
> "A motorcycle is a bicycle with a pandemonium attachment and is
> designed for the especial use of mechanical geniuses, daredevils and
> lunatics."
> — George Fitch, Atlanta Constitution Newspaper, 1912
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