Data Type: DATE

The data types for data and time DATE, DATE_AND_TIME (DT), and TIME_OF_DAY (TOD) are handled internally as a DWORD (32-bit value).

The data types LDATE, LDATE_AND_TIME (LDT), and LTIME_OF_DAY (LTOD) are treated internally as an LWORD (64-bit value).

Data Type	Lower Limit	Default	Upper Limit	Memory	Resolution	Description
DATE		D#1970-01-01	D#2106-02-07	32-bit	Seconds (although only the day is displayed)	Syntax: DATE#yyyy-MM-dd Syntax: D#yyyy-MM-dd
DATE_AND_TIME DT		DT#1970-1-1-0:0:0	DT#2106-2-7-6:28:15	32-bit	Seconds	Syntax: DATE_AND_TIME#yyyy-MM-dd-hh:mm:ss Syntax: DT#yyyy-MM-dd-hh:mm:ss
TIME_OF_DAY TOD		TOD#0:0:0	TOD#23:59:59.999	32-bit	Milliseconds	Syntax: TIME_OF_DAY#hh:mm:ss Syntax: TOD#hh:mm:ss.sss
LDATE	LD#1677-9-22	LD#1970-01-01	LDATE#2262-4-11	64 bit	Nanoseconds (although only the day is displayed)	Syntax: LDATE#yyyy-MM-dd
LDATE_AND_TIME LDT	LDT#1677-9-21-0:12:43.145224192	LDT#1970-1-1-0:0:0	LDT#2262-4-11-23:47:16.854775807	64 bit	Nanoseconds	Syntax: LDATE_AND_TIME##yyyy-MM-dd-hh:mm:ss.sssssssss Syntax: LDT##yyyy-MM-dd-hh:mm:ss.sssssssss
LTIME_OF_DAY LTOD		LTOD##0:0:0	LTOD#23:59:59.999999999	64 bit	Nanoseconds	Syntax: LTIME_OF_DAY#hh:mm:ss.sssssssss Syntax: LTOD#hh:mm:ss.sssssssss

Example:

VAR
    //Date
    dateBottom : DATE :=  DATE#1970-1-1;
    dateTop : DATE :=  DATE#2106-2-7;
    dateAppointment : DATE := D#2020-2-7; // D as data type prohibited

    //Date and time
    dtBottom : DATE_AND_TIME :=  DATE_AND_TIME#1970-1-1-0:0:0;
    dtTop : DT :=  DATE_AND_TIME#2106-02-07-06:28:15;
    dtAppointment : DT := DT#2020-2-7-12:55:1.234;

    //Time of day
    todBottom : TIME_OF_DAY :=  TIME_OF_DAY#0:0:0;
    todTop : TOD :=  TIME_OF_DAY#23:59:59.999;
    todAppointment : TOD := TOD#12:3:4.567;

    // Long date
    ldateBottom : LDATE :=  LDATE#1970-1-1;
    ldateTop : LDATE :=  LDATE#2106-2-7;
    ldateAppointment : LDATE := LD#2020-2-7; // LD as data typ prohibited

    // Long date and time
    ldtBottom : LDATE_AND_TIME :=  LDATE_AND_TIME#1970-1-1-0:0:0;
    ldtTop : LDT :=  LDATE_AND_TIME#2262-4-10-23:34:33.709551615;
    ldtAppointment : LDT := LDT#2020-2-7-12:55:1.234567891;

    //Long time of day
    ltodBottom : LTIME_OF_DAY :=  LTIME_OF_DAY#0:0:0;
    ltodTop : LTOD :=  LTIME_OF_DAY#23:59:59.999999999 ;
    ltodAppointment : LTOD := LTOD#12:3:4.567890123;

END_VAR