Argonne National Laboratory

Experimental Physics and
Industrial Control System

1994  1995  <19961997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  2017  Index 1994  1995  <19961997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  2017 
<== Date ==> <== Thread ==>

Subject: Re: A multiway switch record for the new switchable links.
From: wbrown@csg.lbl.gov (Bill Brown)
To: tech-talk@aps.anl.gov, npr@jach.hawaii.edu
Date: Tue, 8 Oct 96 15:00:32 PDT
npr@jach.hawaii.edu (Nick Rees) sez:

> I have been using R3.13.0 alpha 5 for a while now, and even had
> occasion to use the switchable links. What we appear to need now is a
> switch record, and probably a multipole, multiway switch record.
> 
> I have thought a bit about how this could work. Take the example of a
> single pole multiway switch which can make a single input link switch
> between a number of fields. Ideally it would appear on the database
> diagram as connected on its input side to the multiple fields it is
> switching between, and connected on the other (output) side to the
> single input link. There would be a multiple choice selection mechanism
> like the mbb records to select which field the input link refers to.

Hmmmm - the hardware term that come to mind is "mux" (multiplexer).
To be complete, a "de-mux" would also seem to be appropriate.

One could probably bash someting together as a proof of principal using
a subroutine record.

Oh, what tangled paths we weave.....

-bill


Navigate by Date:
Prev: A multiway switch record for the new switchable links. Nick Rees
Next: Re: A multiway switch record for the new switchable links. Ned Arnold
Index: 1994  1995  <19961997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  2017 
Navigate by Thread:
Prev: A multiway switch record for the new switchable links. Nick Rees
Next: Re: A multiway switch record for the new switchable links. Ned Arnold
Index: 1994  1995  <19961997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  2017 
ANJ, 10 Aug 2010 Valid HTML 4.01! · Home · News · About · Base · Modules · Extensions · Distributions · Download ·
· EPICS V4 · IRMIS · Talk · Bugs · Documents · Links · Licensing ·