Re: gecko wiring help

Hi Matt,

Yes, you have direction! Step is probably there also, if you set it up
similarly. the 18K sounds familiar.

Alan KM6VV

pkranger63 wrote:

>
> Bear with me as I am very much electronicaly challenged. I set
> everything up in turbocnc as you said I then put the negative and
> postive leads of my DVM across the step and dir terminals on the
> gecko and show arounf 3.25 volts, when i jog the opposite way it goes
> to 0.00 and when i again go the opposite way it goes back to 3.25, is
> that what I am looking for? As far as the resistors I am not sure
> what to go with. My motor is rated at 2 amps which would be a 18k
> reisitor, do I want to go higher/lower than this. Thanks so much
> Alan for taking to time to help me along.
>
> Thanks again,
> Matt
>
> --- In CAD_CAM_EDM_DRO@y..., Alan Marconett KM6VV <KM6VV@a...> wrote:
> > Hi Matt,
> >
> > Mariss has a data sheet (which you probably have) at:
> >
> > http://www.geckodrive.com/support/pdf/g210_manual.pdf
> >
> >
> > Connections:
> >
> > Black and Brown for A & B, Red and White for C & D, should be fine.
> >
> > Run "common +5" jumpers, get +5 from game port.
> >
> > Configure jumpers for 1/2 step.
> >
> > Connect step and direction to parallel port plug.
> >
> > Insure Disable line is open. (useful to have a SPST switch
> connected to
> > this pin and ground).
> >
> > INSURE PROPER RESISTOR is installed for your MOTOR!!!
> >
> >
> > Configure TurboCNC axis X pins for LINEAR, step/dir, and set scale
> > (0.000125 for a Sherline). LPT port is probably 378h, see what
> yours
> > is. Active LOW, Low is +. Pins you select will match your
> connector
> > wiring. Step = 2, Dir = 3 is typical.
> >
> > A DVM or suitable test probe should show the direction line going
> from
> > hi to low as the X axis is jogged back and forth.
> >
> > A 'scope can be used to see the step line pulses.
> >
> > Complete the TurboCNC steps first, and check to see if your DVM
> and/or
> > 'scope shows activity. This divides the problem into two parts!
> Get
> > this working BEFORE you continue!
> >
> > A DVM should show the direction line going first hi, then low, as
> jog
> > direction is changed.
> >
> > Not seen? Run the FKEYBIT.EXE program, and use F8 and Alt-F8 to
> toggle
> > step line, and F7 and Alt-F7 to toggle direction line.
> >
> > No DVM or meter? Use an LED in series with a 220 ohm resistor to
> sense
> > (probe) between your +5 line and the step or direction pins.
> >
> > The port may be 378h, 278h or 3BCh. Try another port!
> >
> > A DVM or ohm meter set to 0-5V can sometimes also show activity on
> the
> > step line; usually as a drop from the ~4V to a lower value, 2V if a
> > square wave is seen. Duty cycle of square wave determines
> percentage of
> > hi vs low.
> >
> > The following steps from DOS will run debug, and show you the
> address of
> > the LPT port (LPT1 shown) of your system, if you don't seem to get
> > anything from above steps. You might have more then one port.
> > Determine which one to use!
> >
> > DEBUG
> > D40:8
> > 0040:0000 78 03 00 00 00 00 00 00 (this line
> debug
> > types)
> > Q
> >
> >
> > The motor shaft should have holding torque once motor power is
> turned
> > on. If a disable switch has been connected, turning it on and off
> > should demonstrate the holding torque of the stepper.
> >
> > HTH
> >
> > Alan KM6VV