Johan_Van_Acker

Displaying a X-Y trend is very slow

Discussion created by Johan_Van_Acker on Sep 21, 2011
Latest reply on Sep 23, 2011 by Johan_Van_Acker

Hello,

 

 

 

we are working with processbook to display a X-Y trend.
The values come from a DeltaV station, these are OPCHDA data.
There's no PI server, but a PI Protocol Converter.

When displaying a X-Y trend with 2 hours history, and 8 pen it takes about 8 minutes to display the trend.
We want to be able to add/remove pen, but because of the time it takes it is nearly impossible (too slow).

Would there be a workaround, or maybe a new version of processook is able to display X-Y trend faster ?

P.S. :
Processbook version : 3.1.0.1
PI Protocol converter version : not found (?)
PI OPCHDActr version : 1.0.1.43
PI SDK : 1.3.6.361
PI Converter Data Engine : 1.0.1.43
PI Protocol converter APS Connector (piPCAPSCtr) : 1.0.0.1

 

 

 

We have several ways to display a X-Y trend :

 

-          Intrerpolated

 

-          Recorded

 

-          Synchronized

 

...and actually we don’t know which one to use, each having advantages and disadvantages.

 

Would you have some advices ?

 

 

 

Thanx

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