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scl programming , what is going on ???

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 hello there ! all the variables are reals ... can anyone explain why i get a different result when i calculate c2 first ??? the two programs shown in the pictures are exactly the same ... the only difference is the posistion of c1 and c2 . please help me . It's not a logic  attitude in programming ..... Any ideas? Thank you

Capture.JPG

Capture1.JPG

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In the second picture the calculation is wrong, I tried to reproduce the error simulating a 1215C/DC/DC/DC in TIA V13 sp1 update 8 but could not.
What version of the software are you using and are you sure you didn't change anything else?

error.png

correct.png

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I am using tia portal v11 ... I didn;t change anything ... just copy paste the line in different order ....

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