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Missed totalizer outputs

Question asked by Jesús Burgers on Nov 5, 2013
Latest reply on Nov 19, 2013 by Jesús Burgers

Hi everybody,

 

I have a DCS integrator tag. This tag accumulates the energy generated by a solar plant. I need to create a tag that calculates the energy generated each hour. For that purpose I've defined a Totalizer tag with this configuration:

Totalizer Point Attributes for: in_tot
Descriptor: IN Totalizer

archiving = 1
calcmode = EVENTWEIGHTED
compdev = 2
compmax = 28800
compmin = 0
compressing = 0
compvalue = 
conversion = 1
datasecurity = piadmin: A(r,w) | piadmins: A(r,w)
descriptor = IN Totalizer
engunits = MWh
eventexpr = 
excdev = 0
excmax = 0
excmin = 0
filterexpr = 'OP_MODE_filtered' = 0 and 'test_mode' = 0
function = TOTAL
movingcount = 1
offset = +0H
offset2 = +0M
options = INFROMTOTALIZER UNDERISZERO ONEATEND 
pctgood = 85
period = +1H /c
period2 = +2M
ptsecurity = piadmin: A(r,w) | piadmins: A(r,w)
ratesamplemode = NATURAL
reportmode = PERIODEND
scan = 1
shutdown = 0
sourcetag = in
span = 999,9
step = 1
tag = in_tot
totalclosemode = CLOCK
typicalvalue = 0
zero = 0
zerobias = 0

It seems to work fine. It processes correctly the source tag resets. But I noticed that it has missed some outputs and I don't know why. I have studied the source tags values at the hours of the missed outputs, and I saw that in these cases the next samples after the hour were "Bad Input". Here an example (09:00 sample missed):

 

Source Tag Values:

859.599975585938859.799987792969860860.099975585938860.200012207031860.299987792969860.400024414063860.599975585938860.799987792969860.900024414063861.099975585938861.200012207031861.400024414063861.599975585938861.700012207031861.900024414063862862.099975585938862.200012207031862.400024414063862.5862.700012207031862.799987792969863863.099975585938863.200012207031863.299987792969863.5863.700012207031863.799987792969864864.099975585938864.299987792969864.5864.599975585938864.799987792969864.900024414063865865.099975585938865.299987792969865.400024414063865.599975585938865.700012207031865.900024414063866.099975585938866.200012207031866.400024414063866.5866.700012207031866.900024414063867867.200012207031867.299987792969867.5867.599975585938867.700012207031867.799987792969868868.099975585938868.200012207031868.299987792969868.400024414063868.5868.599975585938868.700012207031868.799987792969868.900024414063869869.099975585938869.200012207031869.299987792969869.400024414063869.5869.599975585938869.700012207031869.700012207031869.799987792969869.900024414063870870.099975585938870.200012207031870.299987792969870.400024414063870.5870.599975585938870.700012207031870.799987792969870.900024414063871871.099975585938871.200012207031871.299987792969871.400024414063871.5871.599975585938871.700012207031871.799987792969871.900024414063872872.099975585938872.200012207031872.299987792969872.400024414063872.5872.599975585938872.700012207031872.799987792969872.900024414063873873.099975585938873.200012207031873.299987792969873.400024414063873.5873.599975585938873.700012207031873.799987792969873.900024414063874

Totalizer Values:

9.600036621093753.5

Can anybody help me with this problem?

 

Thanks,
J.Burgers

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