Re: replacing anilam crusader II control

Roy

Well I can't count! There are 2 lights on the com port tester. Yes
the little unit with the 7 led's. The DR and DSR both glow merrily red.

Thanks
for responding.

Jim.


--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Roy J. Tellason"
<rtellason@b...> wrote:

> On Monday 16 February 2004 12:21 pm, Jim H wrote:
> > Hi
> >
> > Has anyone out there replaced an anilam crusader II control on a
> > knee mill? While my control works well the record and input rs232
> > ports appear dead. A com port tester from radio shack shows no
> > lights when connected to the record port and only one light when
> > connected to the input port.
>
> That the little unit with 7 LEDs and a 25-pin connector on each

side? I have

> one of those, and it's real handy. The trouble is, you don't know

which of

> those pins are used, and which aren't. RS232 is a pretty flexible

spec...

>
> Maybe you could have a look at the board and see? Which light is on?
>
> Odds are that if the port isn't working the way it should, the

chips that

> connect to it are the problem. These are very often 1488 and 1489

(or the

> equivalent 75188 and 75189, same thing). I had some equipment where

Ihad to

> replace these regularly, so I ended up putting sockets in. <g> The
> receiver half of that pair only needs +5v power, but the

transmitter end of

> it needs bipolar supplies, typically +/- 12v. If these aren't

present then

> the port won't work either. The '88 is the transmitter and you

should see

> power on pins 1 (- supply) and 14 (+ supply). The '89 is the

receiver and

> that should show +5 on pin 14. Pin 7 is ground in both cases.
>
> > I had hoped to do more 3 axis work but the limitation on keyboard
> > entry holds me to 2-1/2 axis mostly. A call to anilam gave a price
> > of $7500 for a 3000m replacement control. Just a few thousand out of
> > the budget.
>
> Yow. For that kind of money I'd be trying to fix the one you've

got. How are

> your soldering skills? :-)
>
> > Has anyone tried a home brew replacement?
>
> Not me, but hopefully the above will be of some help.