Re: EPICS UIs in the context of changing enum record identifiers

[Pete Jemian <jemian@anl.gov>]

Peter:

On 4/1/2015 12:54 PM, Peter Milne wrote:
> Is it the case that the MBBO button shows "this is what it was when the
> screen started, or what you last requested on this screen", while the
> Stringout shows "this is what it actually is now" (perhaps because some
> other agent changed it).
Actually, the mbbo labels are more prosaic: b0, b1, b2, ...

For the pf4Bankmore.adl screen, the 16 mbbo choices (4 filter foils, 
each in or out) are drawn as 16 MEDM Message Button widgets in a linear 
1-D array.
Next to each button is a MEDM Text Monitor widget showing the stringout 
with that button.
Opposite the linear array of buttons is a MEDM Byte Monitor widget that 
shows the selected value of the mbbo record.
Like this example, showing b2 selected (transmission of 0.25):

  [b0]  1.0
  [b1]  0.5
* [b2]  0.25
  [b3]  0.125
  [b4]  0.0625

The button labels could have been slightly more descriptive, showing the 
total foil thickness for that combination but that is much less useful 
than the transmission (1-attenuation) from a user point of view.
Pete

--
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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
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   Education is the one thing for which people
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