Re: port problem

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "John D. Bussema"
<bussema@u...> wrote:

> Howdy,
>
> I'm having some trouble interfacing my PC to my set of G320's. I

have one

> drive fully wired to a servo, and I'm trying to use Mach2 to get

the thing

> to spin. I installed Mach2 and set it to output step to pin 1 of

the

> parellel port and direction to pin 2. After trying to jog the servo

for a

> while with no success, I decided to check into problems I might

have with

> the parellel port. The first obvious one I found was that it wasn't

enabled

> in the bios. . . so I of course enabled it, happy that I had most

likely

> solved the problem. Unfortunatly that wasn't it. My first question

is if

> there is any simple way to test output. Lacking a scope, I tried

testing the

> logic level of the direction pin as I "jog" Mach2 in different

dirrections.

> I would expect to see something around 0 volts for one direction

and

> something around 5 volts for the other. . . right? My other

question I guess

> is if there is some common problem I could be overlooking. Anyone

have a

> simple fix?
>
> Thanks,
> John
> ----- Original Message -----
> From: <JanRwl@A...>
> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> Sent: Wednesday, October 27, 2004 8:24 PM
> Subject: Re: [CAD_CAM_EDM_DRO] rotary table as 4th axis
>
>

Be advised that 320's can be jumpered internally for +5 common or
ground common. Read the manual and make sure you have them jumpered
properly. On older 320's you had to provide a reset signal on the
Error/Rst pin. Use the +5 from the encoder pin as the reset signal
(NOT the +5 from the PC)