Re: troubleshooting help

Rick,
I'm a newbie here and I'm afraid most of my experience in this is
from reading this list, but, A couple af days ago I read a similar
post. The reply from one of the vetrans suggested the parallel port
adress setting in the computer wes wrong. He told how to check this.
I don't remember the name of the post, but it was only a few days ago
so it shouldn't be to hard to find.
Good Luck,
Dale


-- In CAD_CAM_EDM_DRO@y..., "Rick Miller" <apollo@a...> wrote:

> Hello!
> I just finished wiring up my 3-axis controller, and I'm having

trouble getting it to work properly. I tried using TurboCNC, but I
couldn't get it to move the motors (after trying various combinations
of settings), or activate any of the relays.

>
> When the system is powered, the step motors are receiving

power; they hold their position firmly and cannot be rotated by hand,
so I know it's receiving power. Also, when the computer boots up, the
step motors turn a few steps on their own accord, so I know that
*some* type of signal is getting through the parallel port, at least
at that time.

>
> I tried to send step signals "manually" by using the OUT 888,

[x] command from qbasic, without having any luck. I'm wondering if
anyone knows what parameters (if any) from the basic OUT command
would send a signal to either pin 1, 14, or 16; this would allow me
to at least test the relay for function.

>
> If there are any other simple ways to test the parallel port,

I'd like to know... also, if anyone has any other troubleshooting
suggestions, I'd appreciate them. I did put my voltmeter across the
pins on the parallel port while running a loop of the OUT command;
there was no difference on the meter, it stayed at +4.5VDC the whole
time; perhaps the signal pulse is too short for my digital voltmeter
to read properly?

>
> Thanks in advance for any suggestions,
> Rick
>
>
> [Non-text portions of this message have been removed]