2/14/2016 9:21 PM | |
Joined: 2/10/2015 Last visit: 6/18/2024 Posts: 14 Rating: (0) |
Hi I need Block FB100 "Totalizer" for step7 5.5 and LAD programing. I not find here and internet , I help me for download Block FB100"Totalizer". help me ------------------------------------------------------------------------------------------ |
Last edited by: Min_Moderator at: 2/15/2016 11:52:01 AMNew subject after splitting |
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9/1/2021 2:44 AM | |
Joined: 10/7/2005 Last visit: 9/22/2024 Posts: 3021 Rating: (1054)
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The inaccuracy your are experiencing is expected and any attempt to totalize flow based on integrating actual flow analog values is flawed and bound to fail eventually (even when using 64bit Long Reals). See also https://support.industry.siemens.com/cs/us/en/view/14844391 for general details on floating point arithmetic's accuracy (and the tons of discussions around this subject in the Forum here). The one and only accurate way to totalize is by using a Digital output from the Flow meter that will give you a pulse per quantity (e.g. per liter, per m3 etc.) which you then simply add up in a DINT. Anything else is simply a guestimate no matter how many Analog based Integral totalizing Blocks Siemens (or others) make available. |
Cheers |
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