RE: [CAD_CAM_EDM_DRO] Re: Stepper motors only turning one directi on

Are you measuring the voltage change WITH THE wire hooked up to the Centent?

How is it wired; are you going direct from Parallel port to the drive, or
are you using buffers/isolators/breakout board etc between the 2?

Andy Wander
Verrex Corporation


-----Original Message-----
From: coldfusionracingproducts [mailto:gokarts164@...]
Sent: Monday, June 07, 2004 2:08 PM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: [CAD_CAM_EDM_DRO] Re: Stepper motors only turning one
directi on

But that is the problem. The voltage does change from 0v to 4v and
it matches the direction of mach2 perfectly.

I tryed changing the low active boxes and it didn't do anything.


--- In CAD_CAM_EDM_DRO@yahoogroups.com, Andy Wander <awander@v...>
wrote:

> So it sounds like what is happening is your direction pin signal

is not

> changing. It should be either +5(4, if that's what you get) for

clockwise,

> and 0V for counterclockwise; or the exact opposite. If it never

changes,

> then the motors will never reverse.
>
> Check to make sure that you have the correct pin selected in

Mach2, and then

> measure the pin for the change in voltage when you change

direction. First

> measure at the PC, and then work your way through to the Centent

driver.

>
> In order to work correctly, your direction pin needs to go from

(nominal) 0V

> to +5V to change direction.
>
> Andy Wander
> Verrex Corporation
>
>
> -----Original Message-----
> From: coldfusionracingproducts [mailto:gokarts164@h...]
> Sent: Monday, June 07, 2004 1:45 PM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: [CAD_CAM_EDM_DRO] Re: Stepper motors only turning one
> direction
>
> When I connect the direction wire to the driver, the motor spins

in

> a clockwise motion. When I disconnect the direction wire, the

motor

> spins counterclockwise. I'm still getting 0-4v signals from the
> parallel port and they match mach2.
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "coldfusionracingproducts"
> <gokarts164@h...> wrote:
> > Here is my setup:
> >
> > Centent Cn0143 Microstepping drives (older geckos)
> > 680oz Camtronics Steppers
> > 24v power supply
> > PC with Mach2
> >
> > My motors are only turning in one direction. The distance

traveled

> > is perfect though. When I jog 1 inch left then 1 inch right, it
> > makes it 2 inches right...
> >
> > I measured the signals coming out of the Parallel Port and I am
> > getting changes in the direction voltage.
> >
> > Any advice?
>
>
>
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