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<== Date ==> <== Thread ==>

Subject: Re: Use case for ao record HOPR != DRVH or LOPR != DRVL?
From: Pete Jemian <jemian@anl.gov>
To: <tech-talk@aps.anl.gov>
Date: Tue, 30 May 2017 11:52:49 -0500
That use case is not so convincing. Plot zoom seems a GUI client feature rather than a feature common to all clients of an ao PV.

On 5/30/2017 11:50 AM, Mark Rivers wrote:
One use case would be when you want to zoom into a plot of the PV without restricting the actual output values.  You can set HOPR and LOPR without changing DRVH and DRVL.

-----Original Message-----
From: tech-talk-bounces@aps.anl.gov [mailto:tech-talk-bounces@aps.anl.gov] On Behalf Of J. Lewis Muir
Sent: Tuesday, May 30, 2017 11:42 AM
To: EPICS Tech-Talk
Subject: Use case for ao record HOPR != DRVH or LOPR != DRVL?

Hello, Tech-Talkers!

I understand that for the ao (Analog Output) record, the HOPR and LOPR
fields are used for the display limits and the DRVH and DRVL fields are
used for the control limits.  However, I always end up setting HOPR =
DRVH and LOPR = DRVL.  What's a use case where the display limits would
be different from the control limits (i.e., HOPR != DRVH or LOPR !=
DRVL)?

Thanks!

Lewis


--
----------------------------------------------------------
Pete R. Jemian, Ph.D.                <jemian@anl.gov>
Beam line Controls and Data Acquisition, Group Leader
Advanced Photon Source,   Argonne National Laboratory
Argonne, IL  60439                   630 - 252 - 3189
-----------------------------------------------------------
   Education is the one thing for which people
      are willing to pay yet not receive.
-----------------------------------------------------------



Replies:
Re: Use case for ao record HOPR != DRVH or LOPR != DRVL? Andrew Johnson
References:
Use case for ao record HOPR != DRVH or LOPR != DRVL? J. Lewis Muir
RE: Use case for ao record HOPR != DRVH or LOPR != DRVL? Mark Rivers

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