Thanks for all the replies.
I'll know more when I get the machine. The agent will probably do the mod,
but even then I'm hesitant. If he screws up I'm the one sitting with a big
anchor...

I think I'll use it as-is for a few months, learn more, then take the leap.

Roland

On Tue, 20 Oct 2020 at 22:16, Dave Cole <linuxcncro...@gmail.com> wrote:

> I forget what version of the Fanuc Controllers this applies to, but
> there were some controllers that had a compact flash slot on the front.
> The compact flash slot was used to load and read out the PLC program
> logic and the other controller settings.   The programming was done
> offline on a laptop and the logic was written to the compact flash
> module, then the module was used to load the controllers memory.
> It was awkward.
> You needed a $$ license to run the software.
> This was years ago, but the Fanuc tech guy was charging way over $200/hr
> to make changes.
> Dave
>
> On 10/20/2020 10:49 AM, Jon Elson wrote:
> > On 10/20/2020 02:29 AM, Roland Jollivet wrote:
> >> Also, if I want to ditch the controller at a later stage, are the Fanuc
> >> servo drives interfaceable to EMC?
> >>
> > Can you say what servo amps you have?  The oldest Fanuc had standard
> > analog velocity servos, but instead of a DC tachometer, they
> > synthesized the tach signal from the encoder.  Some machines had the
> > tach in the motor but didn't use it, so it could be set up to use the
> > existing tach.  This applies to the brush motor (yellow cap) series.
> >
> > Later units had brushless motors (red cap) and the servo amps were
> > supplied 6 separate PWM signals, one for each transistor.  That uses
> > up a lot of PWM outputs.
> >
> > Jon
> >
> >
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>
>
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