Re: Converting 5v parallel port signal to 12 or 24 vdc

Thanks Roger...I'll pick up the Opto22 relays.

Dave
--- In CAD_CAM_EDM_DRO@yahoogroups.com, "vrsculptor"
<vrsculptor@h...> wrote:

>
> Use opto22 relays <http://cgi.ebay.com/ws/eBayISAPI.dll?
> ViewItem&item=3868765917>. Threy are optically isolated to protect
> computer and will trigger at low (3.5) volt levels found on some
> computers parallel ports. They are very common and you should be
> able to find them locally.
>
> Roger
>
> In CAD_CAM_EDM_DRO@yahoogroups.com, "dlpolan" <dpolan@c...> wrote:
> >
> > Need a little help with a project...what is the best way to
> convert 5
> > volt signals from my parallel port to a 12 or 24 volt signals to
> use
> > as inputs to a PLC? My PLC is an A-B SLC150 and will only accept
> 10-
> > 30 vdc inputs. I'd like to protect the computer with opto-
> isolation
> > too. Any black boxes out there doing this?
> >
> > Thanks.