Re: [CAD_CAM_EDM_DRO] Re: Repost: Re: Lost Steps => time for microprocessors!

I don't think so. Proper programing of key usage for this type of system
would be to intercept the keyboard interupt and watch for key_down and
key_up. This would eliminate auto-repeat problems.

Art

----- Original Message -----
From: "Ian Wright" <Ian@...>
To: <CAD_CAM_EDM_DRO@egroups.com>
Sent: Thursday, August 31, 2000 1:56 AM
Subject: Re: [CAD_CAM_EDM_DRO] Re: Repost: Re: Lost Steps => time for
microprocessors!


>
> Hi,
>
> Is the problem also one of 'key memory'? - the way PCs remember the number
> of key presses and execute them all sequentially. If the jog button is
held
> down, the keyboard will auto-repeat an unknown number of times and
continue
> to execute these repeats after the key is released (unless it is somehow
> told otherwise). This will then give an almost arbitrary additional
movement
> to the stepper (or presumable servo as well).
>
> Ian
> --
> Ian W. Wright
> Sheffield UK
> ----- Original Message -----
> > >On a stepper system the machine WILL keep moving after you release
> > >the jog key. It is called ramping. If you have to ramp up to the jog
> > >speed then after you release the key it will have to ramp down.
> > >Darrell
>
>
>
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