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<== Date ==> <== Thread ==>
Subject: Re: Motor record: motion relative to .RBV
From: Torsten Bögershausen via Tech-talk <tech-talk at aps.anl.gov>
To: "Marco A. Barra Montevechi Filho" <marco.filho at lnls.br>, "tech-talk at aps.anl.gov" <tech-talk at aps.anl.gov>
Date: Sat, 29 Oct 2022 22:16:15 +0000

Do you look for the .SYNC field ?

 

From: Tech-talk <tech-talk-bounces at aps.anl.gov> on behalf of "Marco A. Barra Montevechi Filho via Tech-talk" <tech-talk at aps.anl.gov>
Reply-To: "Marco A. Barra Montevechi Filho" <marco.filho at lnls.br>
Date: Friday, 28 October 2022 at 21:40
To: "tech-talk at aps.anl.gov" <tech-talk at aps.anl.gov>
Subject: Motor record: motion relative to .RBV

 

Hello all!

Im reading through the EPICS motor record to search for a field similar to .RLV. If i understand correctly, the .RLV will do something similar to summing the caputted value to .VAL instead of directly putting it into .VAL.

Is there a field that sums itself with .RBV instead and then puts this value into .VAL?
Example of expected behavior:

caget MOTOR.RBV
MOTOR.RBV         0.5
caget MOTOR.VAL
MOTOR.VAL         2  #Lets say that for some reason .VAL and .RBV are not in sync.

caput MOTOR.MISTERIOUS_FIELD 0.5

#wait for some time...

caget MOTOR.RBV
MOTOR.RBV            1
caget MOTOR.VAL
MOTOR.VAL             1

Sorry if the question is trivial but i couldnt find anything in the documentation. Thanks!

Marco

 

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Replies:
RE: Motor record: motion relative to .RBV Pearson, Matthew via Tech-talk
References:
Motor record: motion relative to .RBV Marco A. Barra Montevechi Filho via Tech-talk
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