[foxboro] AIM Historian

  • From: "Doucet, Terrence" <tdoucet@xxxxxxxxxxxxxxxxxx>
  • To: <foxboro@xxxxxxxxxxxxx>
  • Date: Thu, 27 Sep 2007 15:41:41 -0400

 List,

We have AIM*Historian gathering thousands of measurements every 5
seconds.

On the same AW70 we would like to write a C program.

For 100 measurements,
we want to look at the latest value (either current or last written to
Historian)=20
minus the value 15 minutes ago and set a flag if the difference is
greater than=20
a fixed value.  (5 sec / sample =3D 180 samples / 15 minutes) *100

What is the best way to read the two values?  =20
We would like the caulculations to be performed about every 10 seconds.

Does anyone have experience with similar applications using AIMAPI or
AIM*DataLink?

Thanks,

Terry
 
 
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