It's probably because you have an INT in the input to the MUL function, which will then try to output an INT as well. INT variables can only handle values of -32768 to 32767. Your value of 523000 won't fit in an INT, so it turns into an invalid number.
Use a DINT. This is usually better for working with time values anyway, because time values are all 32 bit. Or if you can't, use INT_TO_DINT(gvlp.detectie_nalooptijd_s) in the input to the MUL function.
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Hi,
Attached net gives sometimes negatives, what am I doing wrong ?
PS: detectie_nalooptijd_s = INT
Last edit: domoticom 2024-01-04
It's probably because you have an INT in the input to the MUL function, which will then try to output an INT as well. INT variables can only handle values of -32768 to 32767. Your value of 523000 won't fit in an INT, so it turns into an invalid number.
Use a DINT. This is usually better for working with time values anyway, because time values are all 32 bit. Or if you can't, use INT_TO_DINT(gvlp.detectie_nalooptijd_s) in the input to the MUL function.
thnx, meanwhile I added a INT_TO_REAL, now it works.
Can I leave it like this or better DINT ?
you might have some slight inaccuracies with using a REAL. See here for an explanation: https://knowledge.ni.com/KnowledgeArticleDetails?id=kA00Z0000019ZSMSA2&l=en-US
It might not matter, depends on how accurate you need it. I usually stick with integer types for something like this