F_GetDayOfWeek
The function returns the number of the weekday according to DIN 1355 / ISO 8601. According to this standard the weekdays are numbered as follows: Monday = 1, Tuesday = 2, ... Sunday = 7.
FUNCTION F_GetDayOfWeek: WORD
VAR_INPUT
VAR_INPUT
in : DT;
END_VAR
in: The date whose weekday number is to be determined.
Example:
PROGRAM MAIN
VAR
dtFirst : DT := DT#2008-01-01-00:00;
dayOfWeek : WORD;
END_VAR
dayOfWeek := F_GetDayOfWeek(dtFirst);
The result is 2 (Tuesday)
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) |