Structured Text

[Dera bsee]

Hi All,

I've used st here and there but have never had a problem like it and can't seem to figure out what i did wrong. Here's the script.

Target_Point[0] := ( Xco * Pco * 0.25 * (5700-CR)) + (Xm * Pm * 0.75 * (5700 - CR)) + ( CR * Protein_Cream);

and yes I've created all tag names for the abbreviations and so forth. Is my synthax wrong? To long to compute? Please help and thank you!!!

 

[keshik]

Can you post the actual error the compiler is giving you?

 

[V0N_hydro]

5700 should be 5700.0

what is the error?

are all of the tags REALs? Is target point an array[0..?] of REAL (not [1..?])

 

[keshik]

That's a good catch V0N. It's been a while, but I believe that in Codesys you have to explicitly change the datatypes. For example, you may need some "DINT_TO_REAL()" or "REAL_TO_DINT()" functions in there (or something along those lines).

I would recommend that you post the exact error as well as your variable declarations.