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

Subject: RE: Variable scan rate
From: "Dalesio, Leo `Bob`" <[email protected]>
To: "Emmanuel Mayssat" <[email protected]>, "John Faucett" <[email protected]>
Cc: <[email protected]>
Date: Thu, 5 Jan 2006 09:08:16 -0800

Take a calcout record -----
>From the temperature controller - FLNK to an AO record that writes the index of
the .1 second menu item (is it a 3?) to the SCAN field of a calcout record
(thisCalc) that reads the temperature as follows:

INPA  temperature NPP
INPB  temperature PP
CALC  (A-B)<20?3:(A-B)<10?4:(A-B)<4?5:0
OUT	thisCalc.SCAN

This should change the SCAN field of this calc record - reducing it from .1
second, to .2 second to .5 second until it sets it back to Passive.


I'm not sure the application - but it seems ill advised to stop scanning the
temperature unless there is nothing else that would cause it to change. Isn't
there the possibility of a rupture - or sudden ice age onslaught like in the
movies?

Bob


-----Original Message-----
From: Emmanuel Mayssat [mailto:[email protected]] 
Sent: Thursday, January 05, 2006 8:45 AM
To: John Faucett
Cc: [email protected]
Subject: Variable scan rate

Hello ,

I would like to have a scan rate that works as follow:
( example: for temperature readback record)

The record starts in passive mode
When I change the temperature settings, the record should have a high scan rate.
When the readback stabilizes, the scan rate should decrease and after some amout of time go back to passive.

Did anybody implement this type of scan ?
If so how?

Thanks,

--
Emmanuel Mayssat
Cell: 650/793-0626
Lyncean Technologies, Inc.
"See the invisible"



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