Re: [CAD_CAM_EDM_DRO] Step & Direction for Bridgeport Boss 3/4/5/6

Roland Friestad wrote:

> To the group -
>
> I'd be glad to hear from any of you guys who have converted Bridgeport
> CNC
> mills to run on step and direction signals using the existing
> Bridgeport
> drivers - Either on or off list -
>
> I"ve been fooling with these things for a long time now but have
> always just
> removed the whole Bridgeport control and replaced it with a new one so
> I've
> never taken the time to go at it this way - If those of you who have
> would
> share the info it would be appreciated -

The reason everyone does this is that the least reliable part of the
BOSS machines was the stepper drivers. There are other reliability
problems with them, but the stepper cards are supposed to blow
a transistor a week (one one of the three axes) in production
service!

Jon