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

If the Centent is similar to the Gecko on it's inputs, you DON'T need the PC
ground hooked up to it-just the 5V, the Step, and the Direction.

Check to be sure that the step signal actually appears at the Centent drive
input terminal-(you can measure this with a voltmeter to the 5V).

Just for grins, try reversing you step and dir polarity on the Ports & Pins
setup screen- if they are not active low, chack the active low boxes-if they
are active low, uncheck them.

Andy Wander
Verrex Corporation


-----Original Message-----
From: coldfusionracingproducts [mailto:gokarts164@...]
Sent: Monday, June 07, 2004 1:20 PM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: [CAD_CAM_EDM_DRO] Re: Stepper motors only turning one
direction

The 5v power is coming from the red line on the PC power supply.

No, the distance is perfect. Right now it's 2000 steps per inch.

So what your saying is I need to run the ground from the pc to pin
13 ground on the Centents?


Sorry for my ignorance. Mechanics and programming comes easier then
electrical wiring.

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Alan Marconett <KM6VV@a...>
wrote:

> Hi cold (name?),
>
> I have a driver/PS built up with CN0124 modules. Do you have 5V

power

> to the modules? You also need a 5v return.
>
> My schematic posted on SherlineCNC site.
>
> http://groups.yahoo.com/group/SherlineCNC/files/Drivers%2C%20Power%

20Supplies/

>
> The Drivers/PS PDF.
>
> Do you have the 42 page data sheet?
>
> The distance problem is probably scaling. 200 step/rev * 10 * TPI.
>
> Alan KM6VV
>
>
> coldfusionracingproducts 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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