AnnexF/integral_st.txt
author mjsousa
Mon, 11 Aug 2014 07:22:37 +0100
changeset 928 fa7a6800503d
parent 0 fb772792efd1
permissions -rwxr-xr-x
Fix calling of functions whose parameters are of an implicitly declared datatype (currently only makes sense for REF_TO datatypes, but may make sense to other datatypes too if the datatype model is changed in the future).
 FUNCTION_BLOCK INTEGRAL
   VAR_INPUT
     RUN : BOOL ;       (* 1 = integrate, 0 = hold *)
     R1 : BOOL ;        (* Overriding reset        *)
     XIN : REAL ;       (* Input variable          *)
     X0  : REAL ;       (* Initial value           *)
     CYCLE : TIME ;     (* Sampling period         *)
   END_VAR
   VAR_OUTPUT
     Q : BOOL ;         (* NOT R1                  *)
     XOUT : REAL ;      (* Integrated output       *)
   END_VAR
   Q := NOT R1 ;
   IF R1 THEN XOUT := X0 ;
   ELSIF RUN THEN XOUT := XOUT + XIN * TIME_TO_REAL(CYCLE);
   END_IF ;
 END_FUNCTION_BLOCK