Re: [foxboro] Data retrieval from reduction groups

Sylvain,

thanks for the reply. I assume you think of fh_FdbGetValues() as
one of the extraction functions. How do I tell the funcion to retrieve
the data from the reduction groups and not from the historian? Do
I have to specify its name in the first (historian) parameter of the
function?

Regards,
Ulrich


> Ulrich,

> You first have to set-up your AIM* historian instance to generate
> reduction
> files. This is done by setting the following instance attributes:

> REDUCLEVEL   = 1
> USEREDFILES  = YES


> Setting   USEREDFILES  = YES   enables the use of the
> reduction files by the extraction functions.


> You also have to configure these instance attributes:


> PCTVALID
> REDUCPHASE
> REDPHASEUNIT
> SCANPEAKS
> REDFASTUNIT
> REDMEDUNIT
> REDSLOWUNIT
> REDFASTINT
> REDMEDINT
> REDSLOWINT


> Regards,
> Sylvain.

> Sylvain Nadeau
> Systems Integration  & IT
> Invensys Process Systems
> Foxboro Canada Inc.
> snadeau@xxxxxxxxxx
> 514-421-8107
> Fax:514-421-8054




> -----Original Message-----
> From: Ulrich Wieczorek [mailto:uwieczorek@xxxxxxxxxx]
> Sent: January 17, 2002 1:28 AM
> To: foxboro@xxxxxxxxxxxxx
> Subject: [foxboro] Data retrieval from reduction groups



> Hi list,

> how can I retrieve collected data from reduction groups, using FoxAPI
> or AIMAPI? I don't want calculate the reduced values at runtime
> (using fh_FdbReduction()). Is there a way to retrieve the already
> collected reduced data?

> Regards,
> Ulrich
> '
> ---------------------------------
> Ulrich Wieczorek
> Erpicon Software Development GmbH
> Neusser Str. 724-726
> 50737 Koeln
> Tel. 0221-974600



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