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<== Date ==> <== Thread ==>

Subject: Re: Archiving identical values
From: mrk@phebos.aps.anl.gov
Date: Wed, 11 May 94 13:41:58 -0500
Under gtacs (the precurser of epics) this was true. Archive Monitors were raised on >=
but under epics on >. Actually under gtacs this switch at least once.
Epics ended up usng >=. Thus you must set ADEL to a negative number to force
monitors even if there is no change.

Marty Kraimer
> 
> 
> I am having a problem getting the archiver to archive AI records when
> the value doesn't change.  According to the documentation, as long as
> ADEL is 0, then AR should archive *all* records, regardless of values.
> This is not the case here.  I'm using defaults for all fields except for
> SCAN, DTYP, INP, and HOPR so my AI records are pretty basic.  Here's
> my archive request file:
> 
> NAME:	temp
> DESC:	Test archive for throughput and data validity
> ACT:   	demand
> INACT: 	demand
> SAMPLE:	monitor
> OUTPUT:	chan:bin
> %endHeader%
> ai1
> ai2
> ai3
> ai4
> 
> AR displays "no_data" for those values which haven't changed.  I monitored
> the actual data and verified that "no_data" occurs only when the data
> hasn't changed between samples.  Any ideas?
> 
> Greg Greene
> 

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