Re: EDM and Text Control

[Ralph Lange <Ralph.Lange@bessy.de>]

If you're really really interested, you also might want to look at the 
lengthy tech-talk thread starting with
  http://www.aps.anl.gov/epics/tech-talk/2002/msg00186.php
for a more in-depth discussion of drive limitation issues.
But to make your screen work - Pete's answer was what you were most 
probably looking for.

> Use DRVH & DRVL so that the database rejects out of range values
> rather than relying on the client application to do this.
>
>  
>
> > I have noticed that in EDM the text control seems to accept any value 
> > given to it by the user, regardless of whether it is outside 
> > of HOPR or 
> > LOPR. Is there some way to fix this, or a workaround that 
> > other people 
> > have?
> >
> > I'm assuming for the moment that we need a user screen to 
> > reject output 
> > outside normal parameters (e.g. for a 0-10 scale, 30000 is 
> > right out.). 
> > I notice that the slider control can pop up a text box when 
> > clicked, and 
> > this respects HOPR and LOPR. Is there some way to make the 
> > text control 
> > do this?
> >
> > Thanks,
> > Gavin Smith.
> >