F_GetMonthOfDOY

F_GetMonthOfDOY 1:

The function calculates the month based on the day number in the year.

FUNCTION F_GetMonthOfDOY: WORD

VAR_INPUT

VAR_INPUT
    wYear  : WORD;
    wDOY   : WORD;
END_VAR

wYear: Year (0 ~ 2999).

wDOY: Number of the day in the specified year whose month is to be determined (1 ~ 366).

Return parameter	Description
0	Error, wrong wYear or wDOY parameter value.
> 0	No error. Month (1 ~ 12).

Example:

PROGRAM P_TEST_DOY
VAR
    wYear  : WORD;
    wDOY   : WORD;
    wMonth : WORD;
END_VAR

wYear   := 2009;
wDOY    := 31;
wMonth  := F_GetMonthOfDOY( wYear, wDOY );(* wMonth = 1 *)

wYear   := 2009;
wDOY    := 32;
wMonth  := F_GetMonthOfDOY( wYear, wDOY );(* wMonth = 2 *)

wYear   := 2009;
wDOY    := 60;
wMonth  := F_GetMonthOfDOY( wYear, wDOY );(* wMonth = 3 *)

Requirements

Development environment	Target platform	PLC libraries to be integrated (category group)
TwinCAT v3.1.0	PC or CX (x86, x64, ARM)	Tc2_Utilities (System)