Experimental Physics and
Industrial Control System

[email protected] (Rozelle Wright) · Wed, 18 Dec 96 18:40:45 MST

> From [email protected] Mon Dec 16 08:23:48 1996
> Return-Path: <[email protected]>
> Date: Mon, 16 Dec 1996 16:21:46 +0100 (MET)
> Reply-To: Marian Zurek <[email protected]>
> To: Rozelle Wright <[email protected]>
> Cc: [email protected]
> Subject: Re: VME: Cannot find record type dfan
> In-Reply-To: <[email protected]>
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> 
> 
> I updated files you suggested (with the stuff from the mail), but then I
> don't have consistency with the Record Reference Manual (Release 3.12,
> Issue 1a). Field types are different for (HOPR - int/float in Manual,
> LOPR, HIHI, etc.) So I got an error message at initialisation time (for
> example) 
> 
> "
> Cannot set field HOPR to 0.5
> "
> 
> Does it mean that I should recompile some modules ?
> 
> 
> Regards,
> Marian Zurek
> 
> 
> --
> Marian Zurek
> CERN
> 
> 
> 
Hi Marian,
I finally looked closely at the dfanout which is in the EPICS
distribution.  All of the values (including of course HOPR and LOPR)
are defined as long integers.  This explains why you get an error
when you try to set HOPR to .5 from the opi. 

It is definitely inconsistent with the documentation, and as far as
I can tell, because I went back and looked at old distributions it
has been inconsistent since early R3.12. 

We are using dfanout to set the N fields in several compression
records, so we had never tried using it for floating point numbers.

It will take analog values from an AO and put them out to several
 AI records, but it truncates them first.

If you need floating point data fanout, this won't do it.  You could
probably take the code and all the definitions for the dfanout record
and modify them to be double call the record something else and get
what you need fairly quickly, or there may be a better way to
do this.  

Does any one else have a copy of a floating point data fanout already?

Good Luck,
Rozelle

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|                                                       |
|Rozelle Wright              Phone (505) 667-4804       |
|Los Alamos Natl Labs AOT-8  FAX (505) 665-5107         |
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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System