Re: 4 phase driver, 2 phase motors. can this be wired to work?

--- In CAD_CAM_EDM_DRO@y..., Jon Elson <elson@p...> wrote:

> racingjewels wrote:
>
> > My Mistake Bill, These are DB25 connectors and they are stepper

drives

> > Unfortunately , no manual is available... even from the

manufacturer..

> > they sent me a few pages of info that they had... but not

everything

> > I need to know.
> > By having 3 parallel ports on my computer, would I be able to hook
> > them up or is there a better way?
>
> How can you possibly hook up something that you have absolutely
> no specs for? You think that by just plugging in a 25-conductor
> cable it is going to work? And if it doesn't work in the serial

port,

> then you'll just move the cable over to the parallel port, and it is
> going to go?
>
> You need to know what signal is on what pin of the connector, what

the

> electrical characteristics of the signlas are, and what the signals
> mean.
>
> It could be RS-232 signals (+ and - voltages, zero volts
> is not valid) at some baud rate, with some synchronous or

asynchronous

> character format, with some additional meaning in the control lines
> such as clear to send, request to send, etc.
>
> It could be several TTL level signals (+5 V is a digital 1; 0V is a

digital

> 0) or some other voltage levels, +12 V was often used in older

industrial

> electronics. The signals could be step and direction, or phase

signals,

> or encoded commands like move at 50 steps/second backwards for
> 225 steps, or anything else. These units could also be indexers,

not

> positioning drivers, ie. they will move at some programmed rate for
> a programmed number of steps every time they are told to "go".
>
> The signals could also be current loop, possibly with opto-couplers
> at the inputs.
>
> Without documentation, or a lot of experience with this kind of

gear,

> you just don't know, and plugging things in by guesswork may smoke
> your computer. Just making the assumption that because it has a
> familiar 25-pin connector it has to plug straight into a PC is

completely

> wrong.
>
> Jon

Hi Jon,
In my previous post, I did mention that I had received a few pages of
info on the API drivers, but no manual.
That is how I found out these had DB25 parallel connectors...
The Specs that I have are :
Inputs:
type.... optically Isolated TTL compatible

opto In..... optical Isolation power . User supplies +5Vdc
@ 100milliamps min.

Step ... Requires 0.5 microsecond minimum width,1 mhz max,steps on
trailing edge.

Direction .. CW/CCww

Low Power ... Hi lo powere reduces motor current 33 %of selected
value

No Power... ENA/NOPWR

Resolution: 800,1600,3200,6400,12800,25000,25600, 50,000.

Waveforms : Switch selectable current profile settings.

Built in power supply. Output... 0.9 to 3.5 amps /no cooling .higher
with cooling.

Lo power mode... Selectable by signal input line.
Step rates to 1,000,000 pulses/second

Start speed ,accel/deceleration and max speed set by potentiometers

Balance potentiometer.
pulse out signal for counting pulses.
control options .. pulse and direction inputs
DB 25 logic connector:
1 - + step
2 - - Direction
5,6.- Ground
10,22. +5v out
11 opto in
14 (- step)
15 (+ direction)
16 (+ Shutdown)
17 (- Shutdown)
18 (-Low power)
19 +lowpower
23 N/c

As far as I can tell, It looks like it can be connected to a DB-25
breakout board...
All the motors are already connected to the drivers so no problem
wiring the motors.
Does this look like it will work? And is this enough info to make it
work.
Thanks for helping out ... I know I have a lot to learn... Finding
the info needed is the hard part !
Daniel