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 209. 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

For more information, see: Constants: Date and Time, DATE, DT, TOD, LDATE, LDT, LTOD