[foxboro] AW: CP270 Block Count Limitations; Grrrr
- From: "Rameil, Marcel" <Marcel.Rameil@xxxxxxxxxxxxxxxxxxxxxx>
- To: "foxboro@xxxxxxxxxxxxx" <foxboro@xxxxxxxxxxxxx>
- Date: Fri, 6 Mar 2015 01:38:07 -0500
Hi list, William,
to my knowledge this 4000 limit is documented for all CPs prior to FCP280 being
able to run the so called "Jumbo Image" and is the size of the compound/block
table, so this should be the same on CP60s than on 270s and is valid for the
total added count of all compounds and blocks per CP.
And yes, using larger amounts of data blocks fills this table much faster than
the CPU load or memory - which is by nature of the data blocks as they have no
algorithm (that takes CPU load) and a very small memory footprint.
The FCP280 BTW has a limit of 8000 - Will that help? ;-)
best regards - mit freundlichen Grüßen -
Marcel Rameil
_____________________________________________________________________________________
Marcel Rameil (Sieling) | Schneider Electric | Invensys Systems GmbH |
Industry Business, Process Automation | Technical Sales Consultant
Systems DACH and EE
Phone: +49 2131 4062 302 | Fax: +49 2841 1691107 | Mobile: +49 172 3980 302
Email: marcel.rameil@xxxxxxxxxxxxxxxxxxxxxx | Site: www.iom.invensys.de |
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________________________________________
Von: foxboro-bounce@xxxxxxxxxxxxx [foxboro-bounce@xxxxxxxxxxxxx] im Auftrag von
William C Ricker [wcricker@xxxxxxxxxxxxxxx]
Gesendet: Freitag, 6. März 2015 05:43
An: foxboro@xxxxxxxxxxxxx
Betreff: [foxboro] CP270 Block Count Limitations; Grrrr
I must express my displeasure at this 4000 block limit in the 270 series
controllers,
and that included in this total are the various data blocks (LONG, REAL,
etc.
Some years ago we made the decision, in a Batch IA system which originally
predated
the existence of IA Batch packages, to move a considerable quantity of data
from
the parameters of various blocks into these data blocks. As no good deed
can go unpunished, we pay for that when moving to 270's.
Even with gobs of memory left, and not even approaching overload, we slam
hard against block count. It seems, though I have no actual quantitative
data
to prove it, that the CP60s are more capable for this application than the
270s.
OK, venting over.
William C Ricker
FeedForward, Inc.
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- » [foxboro] AW: CP270 Block Count Limitations; Grrrr - Rameil, Marcel
