Re: [CAD_CAM_EDM_DRO] Wiring Problems

Hi Tim, Chris,

I just responded to Chris' post, but with this additional information,
I'd agree that the parallel port is in question. I'm assuming Chris is
running DOS for CNCpro?

Some BIOS settings will complicate CNC program operation, "compatibility
mode" should be used. Yes, LED's w/ pullup resistors to +5 would be a
good indication. Or logic probe. Or 'scope. DEBUG (DOS program) can
be used to give the port "writes" of different values.

a100

mov dx, 378
mov al, 0
out dx, al
inc al
jmp 105

then trace.

"stepping" through this simple increment program will cause the data
bits D0 - D7 (pins 1-9) to "toggle" on and off in a binary count
sequence. OR, you can simply replace the '0' in the 2nd instruction
with a value you want to see on the lines.

HTH

Alan KM6VV


Tim Goldstein wrote:

>
> Adding a little in, Chris has gotten motion with the drives when he tested
> in the lab. It is when he is connecting to his target computer that he is
> not getting motion. He has tried it with Master 5 and CNC Pro. Both are demo
> version.
>
> I was thinking about this problem while driving home. If I am following
> correctly and it dod work hooked up in the lab it would lead me to believe
> that the problem may be the parallel port on the target computer. The lab
> test proves the drives, motors and power supply are all working and as far
> as I am aware the only difference is how the pulses are being generated to
> make the motors move. Anyone have a good test to verify the parallel port is
> OK? I would likely use a logic probe or even hook some LEDs from my pins to
> the +5 v line and then using one of the CNC softwares set the steps per inch
> to something large like 1000. Then take steps of .001 a step at a time and
> verify that the pin is toggling.
>
> Any other ideas??
>
> Tim
> [Denver CO]
> -----Original Message-----
>
> Hi all,
> I'm a little new to the whole CNC scene – Tim told me to post
> here and ask my questions. Anyhow, I've got two Geckodrive G201s, a
> DB25 breakout board from Camtronics, a 24V, 7.5A Lambda power supply,
> and two Vexta C7034-9212 2.5V, 2A steppers.
> For some reason I can't seem to get any of it working right…
> can someone or a group of people PLEASE help me? What software should
> I be using, does anyone have a drawing/schematic of how to connect it
> all, so I can confirm my connections?
> Any/all help is appreciate – thanks,
> -Chris Clough
> Ames, IA
>
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