Re: stepper problem

Check to see if your step and direction lines are shorted. This is a
typical symtom if they are. An ohmmeter will tell the story.

Mariss

--- In CAD_CAM_EDM_DRO@y..., "andrewyslee" <andrewlee@s...> wrote:
> Hi,
>
> A friend tried to post this question but never made it. Hoping that
> someone can point out the most likely cause of this little problem
of
> steppers moving only one direction.
>
> He has one 2-axis driver box with G201 which only move in the
positve
> x and y direction. When commanded to move in the negative
direction,
> the motors only emit a tingling sound, no movement. To eliminate
the
> possibility of the step&direction signals being the culprit, the
> lathe was connected to another driver box (g201's) and movement was
> smooth both ways - positive as well as negative.
>
> What is the most likely cause with the problem driver box?
>
> Thanks.
>
> Andrew