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AnnexF/weigh_st.txt
author Manuele Conti <conti.ma@alice.it>
Thu, 03 Jan 2013 22:54:55 +0100
changeset 788 aa56031e5cb3
parent 0 fb772792efd1
permissions -rwxr-xr-x
Implement Mario's suggestions:
- Clean up code replace merge algorithm with a function.
- Fix for_statement setting control variable to not a constant.
- Fix for_statement checking BY expression to get correct value for optimization
branch.

Thanks Mario. 
FUNCTION WEIGH : WORD     (* BCD encoded *)
  VAR_INPUT  (* "EN" input is used to indicate "scale ready" *)
    weigh_command : BOOL;
    gross_weight : WORD ; (* BCD encoded *)
    tare_weight : INT ;
  END_VAR
(* Function Body *)
IF weigh_command THEN
  WEIGH := INT_TO_BCD (BCD_TO_INT(gross_weight) - tare_weight);
END_IF ;

END_FUNCTION                     (* Implicit "ENO" *)
matiec