Experimental Physics and
Industrial Control System

Tim Mooney <[email protected]> · Thu, 13 Sep 2012 11:33:45 -0500 (CDT)

Hinko,

You could do this with the acalcout (array calcout) record in the calc module. (http://www.aps.anl.gov/bcda/synApps/calc/aCalcoutRecord.html)
If .BB is the M-element replacement array, you can read the waveform into the .AA field, overwrite with M elements from .BB, beginning at index N, and write the result back to the waveform record, by configuring the record like this:

.A = M
.B = N
.INAA = "waveform.VAL NPP"
.CALC = "AA[0,B-1]+(BB[0,A-1]>>B)+(AA[A+B,-1]>>A+B)"
.OUT = "waveform.VAL PP"

Tim

----- Original Message -----
From: "Hinko Kocevar" <[email protected]>
To: "Tech Talk" <[email protected]>
Sent: Thursday, September 13, 2012 6:59:05 AM
Subject: waveform changes using subArray

Hi,

We are trying to support a modification of long array (i.e. more than 
500 integer values) seen as a waveform in EPICS IOC. Lets say that it is 
possible and valid for user to change only one or two values from this 
array. By using waveform user needs to get all 500 integers locate the 
one she wants to change, do the modification, store complete array back.
Using subArray to make a "window" into waveform sounded like a good 
solution, but as I just read in the docs, subArray does not support 
value writing back to the waveform.

Can this be done in some other manner? The goal here would be to allow 
user to get/see/change/set only the part of waveform, that shes 
interested in.

Thank you!

Hinko
-- 
Hinko Kocevar
Software development engineer
Instrumentation Technologies d.d.
Velika pot 22, SI-5250 Solkan - Slovenia
T:+386 5 3352600, F:+386 5 3352601
E-mail: [email protected]
http://www.i-tech.si

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-- 
Tim Mooney ([email protected]) (630)252-5417
Software Services Group (www.aps.anl.gov)
Advanced Photon Source, Argonne National Lab

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System