Re: [foxboro] 12 hour ave

Do you want a rolling average or an average per shift or what?
Reduction groups can help you a fair bit.
Filtering and cascading blocks can do it too.
Perhaps use cascading DTIME blocks. 
Utilise the bucket array to first average 10 seconds, then feed the average
into the next DTIME block and average 10 of 10, and then 10 of 100 and then
10 of 1000 and then......
12 hour seconds is 43200 samples. Fair bit to go.

Cheers,
Frits.


-----Original Message-----
From: Brian Long [mailto:blong@xxxxxxx]
Sent: Thursday, 26 February 2004 12:54
To: Foxboro
Subject: [foxboro] 12 hour ave


I need to take an analog input running at 1 sec and average it over 12
hours.  I need to display the value so I can't use the historian functions.
Anybody got a simple solution?
Thanks,
Brian Long
E&I Superintendent
Green Bay Packaging
Arkansas Kraft Division


 
 
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