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AnnexF/integral_st.txt
author mjsousa
Fri, 26 Dec 2014 08:09:34 +0000
changeset 969 706a152731ab
parent 0 fb772792efd1
permissions -rwxr-xr-x
Do constant propagation inside Configurations and Resources (required for support of extension: array [1..max] OF int); (Resources is still buggy)
0
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 FUNCTION_BLOCK INTEGRAL
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   VAR_INPUT
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     RUN : BOOL ;       (* 1 = integrate, 0 = hold *)
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     R1 : BOOL ;        (* Overriding reset        *)
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     XIN : REAL ;       (* Input variable          *)
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     X0  : REAL ;       (* Initial value           *)
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     CYCLE : TIME ;     (* Sampling period         *)
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   END_VAR
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   VAR_OUTPUT
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     Q : BOOL ;         (* NOT R1                  *)
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     XOUT : REAL ;      (* Integrated output       *)
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   END_VAR
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   Q := NOT R1 ;
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   IF R1 THEN XOUT := X0 ;
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   ELSIF RUN THEN XOUT := XOUT + XIN * TIME_TO_REAL(CYCLE);
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   END_IF ;
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 END_FUNCTION_BLOCK
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