Problem rgarding more memory consumption in using trend vi's in labview 7.1 dsc

[dhanwanti]

i uses Legacy_decimate_historical_trend.vi for decimating my historical trend .

i gave start timestamp and historical trend as to this vi and this vi returns back the decimated values and the first timestamp which is always 0 means it starts from Jan 1,1904 .

there is no problem regarding this vi in labview 6.1 but in labview 7.1 it consumes lots of memory and at last systems hangs with warning that insufficient memory to complete decimating values starts from jan 1,1904 to end date at there i want. here i attaches my sample short program to understand my problem in better way pls help me as early as possible

thanks and regards,

dhanwanti

[SteveBale]

Hi there,

not sure what version of DSC you are using there as I don't appear to have one of your trend VI's

Heres something I made a while back, I must warn you though its totally untested but i believe it may help you..

[dhanwanti]

pls go through my vi's as i m using these vi according to my software needs so pls gothrough it and help me.

[DavidEngr]

Hi dhanwanti,

One thing I noticed is that your constant with a value of 900 is not wired to the decimate VI, which means it won't give you 15 minute intervals.  However, my recommendation would be to use the newer trace VIs, rather than the legacy trend VIs.

Best regards,