Re: INCONSISTENT STEPPING - WIERD SITUATION

Art,

Not to worry. The multipliers were originally designed for point to
point operation; machine stops, change direction, go again.

People started using them for constant contouring.

That required a revision so that each sent step is "tagged" with its
direction. When the step executes, it goes in the direction it was
tagged with. That was done on REV-4, 3 months ago. No more problems.

The next revision will have it tagged 4 steps deep. The only way to
spoof it then will be to change direction 4 times while accelerating.
Not a realistic situation.

Though it was never designed to do constant contouring, with REV-4 it
has been able to, based on reports and extensive testing here.
Because I am paranoid about this, REV-5 will quadruple-nail this
situation shut.

You are taking care of this in software. The REV-4 (current version)
takes care of it in hardware as well.

Mariss

--- In CAD_CAM_EDM_DRO@y..., "Art Fenerty" <fenerty@h...> wrote:
> Surprisingly enough I have had this complaint before. It is usually
the
> step/dir pins being swapped or the polarity is wrong. Gecko's do
indeed need
> special handling of the DIR bit ( Actually, it must be held on as
long as
> the multiplied pulse train) but Master5 takes this into account.
(Couldn't
> have it NOT run Marisses drives..that would be kiss of death).
>
> Try swapping step/dir or polarity and see what happens.
>
> Good luck,
> Art
> Master5 Software
> http://users.andara.com/~fenerty/master.htm