Re: Encoders

["Kurt A. Goetze" <goetze@aps.anl.gov>]

Robert,

If you are running synApps, OMS boards, and the "APS standard" motor
connection hardware, then the easiest way to read your encoder into EPICS
is to use the OMS VME58-4E card.  You also could use something like this
http://www.usdigital.com/products/ad4b/
and read the encoder counts with an EPICS generic serial record.

Kurt Goetze
APS/AOD/Beamline Controls


Robert Henning wrote:

> I am trying to integrate some Renishaw encoders into EPICS and I am
> trying to find a simple solution.  I don't have a lot of experience with
> encoders so any comments or suggestions would be welcome.  At this point
> I only want to use the encoders to verify my stepper motor position and
> I was hoping for a simple RS232 interface.  I know this has been done
> with other brands of encoders but I have not seen anything with the
> Renishaw brand.  The encoders have "Differential signals in quadrature
> to RS422 - output via line drivers".
>
> I know I could use the OMS58-4 card but I think that is more then I
> need.  I just want to be able to read in the information to EPICS for
> now.
>
> Thanks in advance,
>
> Robert Henning
> Operations Manager/Beamline Scientist/User Support Specialist
> University of Chicago at Argonne
> 9700 South Cass Avenue
> BioCARS - Building 434 B
> Argonne, IL 60439
> phone: (630) 252-0446
> fax:   (630) 252-0443