Re: [foxboro] ATS and nodebus loading

Patrick,

Yes, you understand correctly.  As I said this is a temporary 
situation to allow us to have a significant amount of field wiring 
connected prior to an upcoming outage.  During the outage we will be 
moving all of the original blocks into the FCP.  I will investigate 
your idea and see if that gets the loading down.

Thanks,
David


At 02:13 PM 4/27/2008, you wrote:


>If I understand correctly you have AIN.MEAS in CP40 linked to AIN.PNT in
>FCP270 and you have lot's of them.
>
>I'm not 100% sure about the next assumption but I think connecting a remote
>link to an AIN.MEAS could cause high traffic if you have lot's of them. The
>AIN does not have a DELTI for the .MEAS and therefore the source FCP270
>value will be send each block-cycle. So if you have your FCP270 AIN blocks
>at 0.5 sec. and have quite a number of these linked to your CP40 AIN.MEAS's
>you could cause significant traffic.
>
>It's just an Idea. I could be wrong!
>We had to do something similar and created dummy sequence blocks in the
>receiving CP (in your case the CP40). Connected these to the source AIN.RAWC
>and set DELTI1 in the receiving sequence block to something like 0.5% of the
>range. Then connected the receiving AIN.MEAS to the SEQENCE.RI0001, RI0002
>... etc.
>In this case we were pretty sure that now al values were transmitted each
>block cycle.
>
>Also keep a close eye on your CP40 resources!
>
>Just an Idea,
>
>Patrick Martens,
>Total Raff. Ned. N.V.
>
>
>
>
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