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<== Date ==> <== Thread ==>
Subject: Re: checking the content of the waveform record
From: Tim Mooney <[email protected]>
To: "Chestnut, Ronald P." <[email protected]>
Cc: EPICS tech-talk <[email protected]>
Date: Mon, 10 Dec 2007 14:50:29 -0600
If you have the calc module (2.6 or higher), the easiest way is probably to use the aCalcout (array calcout) record. Otherwise, I'm with Ron.

If you do have the aCalcout record, here's how I'd configure it:

Say the aCalcout record's AA field is the reference array, and BB is your alarm vector. The expression "AA=BB" is nearly what you want, but it yields an array (whose elements are '1' where AA and BB are the same, and '0' where they differ). You can roll this array up into a single scalar value with the function amin().

In actual practice, "amin(aa[0,35]=bb[0,35])" yields the scalar value '1' only if the first 36 elements of AA are the same as the first 36 elements of BB.

Tim Mooney

Chestnut, Ronald P. wrote:
My first take would be a simple subroutine record which does the compares you want and returns success or failure.

Ron Chestnut 

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Vladimir Sirotenko
Sent: Monday, December 10, 2007 11:49 AM
To: EPICS tech-talk
Subject: checking the content of the waveform record

Does anyone know what is the easiest way to check the content of the waveform record against predefined one? There is a record with 36 elements and we have to raise an alarm if any of it's elements is differ from reference one. Of cource I can use many subArray records, one for every waveform element, then several calc records and so on .. But may be there is more elegant way of doing that?

Thanks,
Vladimir
References:
MVME6100 or 7100 Matt Rippa
Re: MVME6100 or 7100 Oleg Makarov
checking the content of the waveform record Vladimir Sirotenko
RE: checking the content of the waveform record Chestnut, Ronald P.
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