lib/counter.txt
author Manuele Conti <conti.ma@alice.it>
Mon, 11 Jun 2012 22:38:36 +0200
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permissions -rwxr-xr-x
Add check array out of bound.
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(* Following taken directly from the IEC 61131.3 draft standard *)
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(*
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 * An IEC 61131-3 IL and ST compiler.
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 *
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 * Based on the
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 * FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10)
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 *
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 *)
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(*
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 * This is part of the library conatining the functions
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 * and function blocks defined in the standard.
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 *
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 * Counter function blocks
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 * -----------------------
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 *)
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(******************)
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(*                *)
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(*    C  T  U     *)
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(*                *)
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(******************)
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0
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FUNCTION_BLOCK CTU
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  VAR_INPUT
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    CU : BOOL;
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    R : BOOL;
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    PV : INT;
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  END_VAR
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  VAR_OUTPUT
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    Q : BOOL;
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    CV : INT;
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  END_VAR
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  VAR
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    CU_T: R_TRIG;
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  END_VAR
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  CU_T(CU);
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  IF R THEN CV := 0 ;
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  ELSIF CU_T.Q AND (CV < PV)
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       THEN CV := CV+1;
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  END_IF ;
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  Q := (CV >= PV) ;
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END_FUNCTION_BLOCK
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FUNCTION_BLOCK CTU_DINT
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  VAR_INPUT
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    CU : BOOL;
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    R : BOOL;
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    PV : DINT;
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  END_VAR
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  VAR_OUTPUT
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    Q : BOOL;
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    CV : DINT;
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  END_VAR
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  VAR
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    CU_T: R_TRIG;
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  END_VAR
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  CU_T(CU);
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  IF R THEN CV := 0 ;
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  ELSIF CU_T.Q AND (CV < PV)
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       THEN CV := CV+1;
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  END_IF ;
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  Q := (CV >= PV) ;
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END_FUNCTION_BLOCK
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FUNCTION_BLOCK CTU_LINT
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  VAR_INPUT
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    CU : BOOL;
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    R : BOOL;
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    PV : LINT;
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  END_VAR
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  VAR_OUTPUT
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    Q : BOOL;
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    CV : LINT;
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  END_VAR
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  VAR
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    CU_T: R_TRIG;
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  END_VAR
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  CU_T(CU);
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  IF R THEN CV := 0 ;
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  ELSIF CU_T.Q AND (CV < PV)
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       THEN CV := CV+1;
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  END_IF ;
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  Q := (CV >= PV) ;
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END_FUNCTION_BLOCK
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FUNCTION_BLOCK CTU_UDINT
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  VAR_INPUT
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    CU : BOOL;
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    R : BOOL;
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    PV : UDINT;
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  END_VAR
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  VAR_OUTPUT
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    Q : BOOL;
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    CV : UDINT;
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  END_VAR
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  VAR
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    CU_T: R_TRIG;
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  END_VAR
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  CU_T(CU);
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  IF R THEN CV := 0 ;
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  ELSIF CU_T.Q AND (CV < PV)
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       THEN CV := CV+1;
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  END_IF ;
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  Q := (CV >= PV) ;
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END_FUNCTION_BLOCK
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FUNCTION_BLOCK CTU_ULINT
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  VAR_INPUT
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    CU : BOOL;
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    R : BOOL;
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    PV : ULINT;
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  END_VAR
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  VAR_OUTPUT
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    Q : BOOL;
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    CV : ULINT;
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  END_VAR
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  VAR
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    CU_T: R_TRIG;
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  END_VAR
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  CU_T(CU);
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  IF R THEN CV := 0 ;
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  ELSIF CU_T.Q AND (CV < PV)
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       THEN CV := CV+1;
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  END_IF ;
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  Q := (CV >= PV) ;
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END_FUNCTION_BLOCK
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(******************)
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(*                *)
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(*    C  T  D     *)
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(*                *)
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(******************)
0
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FUNCTION_BLOCK CTD
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  VAR_INPUT
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    CD : BOOL;
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    LD : BOOL;
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    PV : INT;
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  END_VAR
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  VAR_OUTPUT
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    Q : BOOL;
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    CV : INT;
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  END_VAR
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  VAR
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    CD_T: R_TRIG;
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  END_VAR
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  CD_T(CD);
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  IF LD THEN CV := PV ;
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  ELSIF CD_T.Q AND (CV > 0)
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      THEN CV := CV-1;
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  END_IF ;
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  Q := (CV <= 0) ;
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END_FUNCTION_BLOCK
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FUNCTION_BLOCK CTD_DINT
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  VAR_INPUT
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    CD : BOOL;
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    LD : BOOL;
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    PV : DINT;
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  END_VAR
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  VAR_OUTPUT
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    Q : BOOL;
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    CV : DINT;
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  END_VAR
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  VAR
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    CD_T: R_TRIG;
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  END_VAR
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  CD_T(CD);
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  IF LD THEN CV := PV ;
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  ELSIF CD_T.Q AND (CV > 0)
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      THEN CV := CV-1;
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  END_IF ;
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  Q := (CV <= 0) ;
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END_FUNCTION_BLOCK
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FUNCTION_BLOCK CTD_LINT
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  VAR_INPUT
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    CD : BOOL;
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    LD : BOOL;
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    PV : LINT;
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  END_VAR
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  VAR_OUTPUT
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    Q : BOOL;
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    CV : LINT;
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  END_VAR
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  VAR
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    CD_T: R_TRIG;
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  END_VAR
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  CD_T(CD);
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  IF LD THEN CV := PV ;
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  ELSIF CD_T.Q AND (CV > 0)
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      THEN CV := CV-1;
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  END_IF ;
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  Q := (CV <= 0) ;
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END_FUNCTION_BLOCK
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FUNCTION_BLOCK CTD_UDINT
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  VAR_INPUT
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    CD : BOOL;
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    LD : BOOL;
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    PV : UDINT;
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  END_VAR
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  VAR_OUTPUT
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    Q : BOOL;
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    CV : UDINT;
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  END_VAR
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  VAR
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    CD_T: R_TRIG;
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  END_VAR
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  CD_T(CD);
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  IF LD THEN CV := PV ;
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  ELSIF CD_T.Q AND (CV > 0)
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      THEN CV := CV-1;
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  END_IF ;
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  Q := (CV <= 0) ;
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END_FUNCTION_BLOCK
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FUNCTION_BLOCK CTD_ULINT
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  VAR_INPUT
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    CD : BOOL;
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    LD : BOOL;
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    PV : ULINT;
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  END_VAR
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  VAR_OUTPUT
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    Q : BOOL;
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    CV : ULINT;
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  END_VAR
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  VAR
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    CD_T: R_TRIG;
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  END_VAR
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  CD_T(CD);
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  IF LD THEN CV := PV ;
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  ELSIF CD_T.Q AND (CV > 0)
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      THEN CV := CV-1;
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  END_IF ;
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  Q := (CV <= 0) ;
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END_FUNCTION_BLOCK
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(********************)
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(*                  *)
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(*    C  T  U D     *)
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(*                  *)
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(********************)
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0
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FUNCTION_BLOCK CTUD
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  VAR_INPUT
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    CU : BOOL;
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    CD : BOOL;
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    R  : BOOL;
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    LD : BOOL;
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    PV : INT;
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  END_VAR
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  VAR_OUTPUT
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    QU : BOOL;
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    QD : BOOL;
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    CV : INT;
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  END_VAR
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  VAR
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    CD_T: R_TRIG;
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    CU_T: R_TRIG;
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  END_VAR
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   295
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  CD_T(CD);
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  CU_T(CU);
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  IF R THEN CV := 0 ;
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  ELSIF LD THEN CV := PV ;
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  ELSE
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    IF NOT (CU_T.Q AND CD_T.Q) THEN
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      IF CU_T.Q AND (CV < PV)
0
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      THEN CV := CV+1;
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      ELSIF CD_T.Q AND (CV > 0)
0
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      THEN CV := CV-1;
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      END_IF;
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    END_IF;
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  END_IF ;
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  QU := (CV >= PV) ;
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  QD := (CV <= 0) ;
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END_FUNCTION_BLOCK
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276
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FUNCTION_BLOCK CTUD_DINT
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  VAR_INPUT
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    CU : BOOL;
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    CD : BOOL;
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    R  : BOOL;
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    LD : BOOL;
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    PV : DINT;
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  END_VAR
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  VAR_OUTPUT
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    QU : BOOL;
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    QD : BOOL;
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    CV : DINT;
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  END_VAR
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  VAR
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    CD_T: R_TRIG;
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    CU_T: R_TRIG;
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  END_VAR
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   332
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  CD_T(CD);
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  CU_T(CU);
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   335
276
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  IF R THEN CV := 0 ;
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  ELSIF LD THEN CV := PV ;
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  ELSE
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    IF NOT (CU_T.Q AND CD_T.Q) THEN
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      IF CU_T.Q AND (CV < PV)
276
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      THEN CV := CV+1;
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      ELSIF CD_T.Q AND (CV > 0)
276
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      THEN CV := CV-1;
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      END_IF;
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    END_IF;
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  END_IF ;
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  QU := (CV >= PV) ;
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  QD := (CV <= 0) ;
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END_FUNCTION_BLOCK
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FUNCTION_BLOCK CTUD_LINT
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  VAR_INPUT
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    CU : BOOL;
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    CD : BOOL;
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    R  : BOOL;
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    LD : BOOL;
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    PV : LINT;
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  END_VAR
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  VAR_OUTPUT
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    QU : BOOL;
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    QD : BOOL;
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    CV : LINT;
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  END_VAR
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  VAR
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    CD_T: R_TRIG;
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    CU_T: R_TRIG;
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  END_VAR
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   369
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  CD_T(CD);
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  CU_T(CU);
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   372
276
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  IF R THEN CV := 0 ;
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  ELSIF LD THEN CV := PV ;
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   375
  ELSE
290
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    IF NOT (CU_T.Q AND CD_T.Q) THEN
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      IF CU_T.Q AND (CV < PV)
276
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      THEN CV := CV+1;
290
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      ELSIF CD_T.Q AND (CV > 0)
276
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      THEN CV := CV-1;
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      END_IF;
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    END_IF;
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  END_IF ;
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  QU := (CV >= PV) ;
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  QD := (CV <= 0) ;
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   386
END_FUNCTION_BLOCK
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   387
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   388
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FUNCTION_BLOCK CTUD_UDINT
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  VAR_INPUT
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    CU : BOOL;
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    CD : BOOL;
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    R  : BOOL;
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    LD : BOOL;
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    PV : UDINT;
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  END_VAR
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  VAR_OUTPUT
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    QU : BOOL;
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    QD : BOOL;
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   400
    CV : UDINT;
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   401
  END_VAR
290
013eab46aebb Fixing implementation of CU, CD, and CUD in standard library.
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diff changeset
   402
  VAR
013eab46aebb Fixing implementation of CU, CD, and CUD in standard library.
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   403
    CD_T: R_TRIG;
013eab46aebb Fixing implementation of CU, CD, and CUD in standard library.
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diff changeset
   404
    CU_T: R_TRIG;
013eab46aebb Fixing implementation of CU, CD, and CUD in standard library.
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diff changeset
   405
  END_VAR
013eab46aebb Fixing implementation of CU, CD, and CUD in standard library.
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diff changeset
   406
013eab46aebb Fixing implementation of CU, CD, and CUD in standard library.
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   407
  CD_T(CD);
013eab46aebb Fixing implementation of CU, CD, and CUD in standard library.
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diff changeset
   408
  CU_T(CU);
013eab46aebb Fixing implementation of CU, CD, and CUD in standard library.
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parents: 276
diff changeset
   409
276
1679f514f38a Updating origin and license info of library fuctions.
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diff changeset
   410
  IF R THEN CV := 0 ;
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   411
  ELSIF LD THEN CV := PV ;
1679f514f38a Updating origin and license info of library fuctions.
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diff changeset
   412
  ELSE
290
013eab46aebb Fixing implementation of CU, CD, and CUD in standard library.
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parents: 276
diff changeset
   413
    IF NOT (CU_T.Q AND CD_T.Q) THEN
013eab46aebb Fixing implementation of CU, CD, and CUD in standard library.
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parents: 276
diff changeset
   414
      IF CU_T.Q AND (CV < PV)
276
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diff changeset
   415
      THEN CV := CV+1;
290
013eab46aebb Fixing implementation of CU, CD, and CUD in standard library.
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parents: 276
diff changeset
   416
      ELSIF CD_T.Q AND (CV > 0)
276
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   417
      THEN CV := CV-1;
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diff changeset
   418
      END_IF;
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diff changeset
   419
    END_IF;
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   420
  END_IF ;
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   421
  QU := (CV >= PV) ;
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   422
  QD := (CV <= 0) ;
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   423
END_FUNCTION_BLOCK
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diff changeset
   424
1679f514f38a Updating origin and license info of library fuctions.
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diff changeset
   425
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   426
FUNCTION_BLOCK CTUD_ULINT
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   427
  VAR_INPUT
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   428
    CU : BOOL;
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   429
    CD : BOOL;
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diff changeset
   430
    R  : BOOL;
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   431
    LD : BOOL;
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   432
    PV : ULINT;
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   433
  END_VAR
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   434
  VAR_OUTPUT
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   435
    QU : BOOL;
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diff changeset
   436
    QD : BOOL;
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diff changeset
   437
    CV : ULINT;
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diff changeset
   438
  END_VAR
290
013eab46aebb Fixing implementation of CU, CD, and CUD in standard library.
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diff changeset
   439
  VAR
013eab46aebb Fixing implementation of CU, CD, and CUD in standard library.
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diff changeset
   440
    CD_T: R_TRIG;
013eab46aebb Fixing implementation of CU, CD, and CUD in standard library.
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parents: 276
diff changeset
   441
    CU_T: R_TRIG;
013eab46aebb Fixing implementation of CU, CD, and CUD in standard library.
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diff changeset
   442
  END_VAR
013eab46aebb Fixing implementation of CU, CD, and CUD in standard library.
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diff changeset
   443
013eab46aebb Fixing implementation of CU, CD, and CUD in standard library.
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diff changeset
   444
  CD_T(CD);
013eab46aebb Fixing implementation of CU, CD, and CUD in standard library.
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diff changeset
   445
  CU_T(CU);
013eab46aebb Fixing implementation of CU, CD, and CUD in standard library.
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diff changeset
   446
276
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diff changeset
   447
  IF R THEN CV := 0 ;
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diff changeset
   448
  ELSIF LD THEN CV := PV ;
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diff changeset
   449
  ELSE
290
013eab46aebb Fixing implementation of CU, CD, and CUD in standard library.
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parents: 276
diff changeset
   450
    IF NOT (CU_T.Q AND CD_T.Q) THEN
013eab46aebb Fixing implementation of CU, CD, and CUD in standard library.
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parents: 276
diff changeset
   451
      IF CU_T.Q AND (CV < PV)
276
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diff changeset
   452
      THEN CV := CV+1;
290
013eab46aebb Fixing implementation of CU, CD, and CUD in standard library.
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parents: 276
diff changeset
   453
      ELSIF CD_T.Q AND (CV > 0)
276
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diff changeset
   454
      THEN CV := CV-1;
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diff changeset
   455
      END_IF;
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diff changeset
   456
    END_IF;
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diff changeset
   457
  END_IF ;
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   458
  QU := (CV >= PV) ;
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diff changeset
   459
  QD := (CV <= 0) ;
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diff changeset
   460
END_FUNCTION_BLOCK