Re: Controlling more stepper drivers than I have outputs for?

ummmm,

there has been talk about using a relay to switch the output of the
controllers. This is a no-no as power loss can be pretty great.

Has anyone used relays to switch the control signal to the
controllers ?

or should we just wait for the 'black box' project?

Dave

--- In CAD_CAM_EDM_DRO@y..., "mart_wid" <vwa1244302@a...> wrote:
> Hi, take a look at TurboCNC. Find out about it here:-
www.dakeng.com
>
> All the best, Martin.
>
>
> --- In CAD_CAM_EDM_DRO@y..., Jon Anderson <janders@n...> wrote:
> > A post to the Ahha group brought no replies, will try here. I am
> looking
> > into an application where I would need to control a minimum of 6
> axis,
> > up to 8 axis, in 2 axis pairs and with no more than any 4 axis
> needed at
> > any particular time. Ahha will only control 4. I would have all
> motors
> > and drivers powered, want to be able to switch step/dir lines
> without
> > getting any jumping from switching noise. Also need to maintain
> current
> > line status, whatever they might be at the moment. Would like to
> do this
> > with off the shelf stuff, even if I have to build from the
> component
> > level. This will probably be done with Gecko drives, which offers
> the
> > choice of steppers or servos.
> >
> > In a nutshell, I want to automate a lathe with multiple slides,
and
> > control a robotic loader/unloader.
> > Reason for wanting to do all this in Ahha is I want ALL info
> related to
> > running a particular job in the G-code file. Yeah, going to be
> > interesting setting up programs...<G>
> > Goal is to reduce to a minimum the lot size needed to justify the
> > automation. Do not want to get into PLC's and having to load
> separate
> > programs.
> >
> > Jon A.