Re: [CAD_CAM_EDM_DRO] gecko wiring help

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


pkranger63 wrote:

>
> Well got everything together nothing seems to work though. I am
> currenty trying to just get one stepper motor to move via the
> computer :) I am using a gecko 210 and sherline stepper motors along
> with turbocnc. I am resetting the computer to DOS and the parallel
> port seems correct, I have even tried to switching it in turbocnc. I
> have the gecko set too +5v for the wire I have comming out of the
> gameport of my laptop, is this correct so far? I am a little fuzzy
> about wirring the motor it is a 6wire motor with wires labeled as
> follows
>
> Brown(A)
> Black(ComA)
> orange(A with a line over the A)
>
> Red(B)
> white(com B)
> yellow(B with a line over it)
>
> What is the correct way to wire this to the gecko. I tried what I
> thought was correct based on the Gecko site and the motor just made
> high-pitched noise but no movement. Should I be reading voltage
> across phase a-b or c-d or just when I enter in a movement on the
> Turbocnc program. Any other areas to check?
>
> As always thanks for the help
> Matt