DATE_TO/DT_TO Conversions

General Information

For general hints to be considered during type conversion, refer to the chapter Type Conversion Functions.

Definition

IEC operator for conversions from the variable type DATE or DATE_AND_TIME to a different type.

Syntax

DATE_TO_<data type>

DT_TO_<data type>

Conversion Results

The date will be stored internally in a DWORD in seconds since Jan. 1, 1970. This value will then be converted.

For STRING type variables, the result is the date constant.

NOTE: The operators that convert a value into a character string of type STRING or WSTRING require an operand that matches the target data type.

Examples in ST

Examples in ST with conversion results:

Example

Result 

b := DATE_TO_BOOL(D#1970-01-01);

FALSE 

i := DATE_TO_INT(D#1970-01-15);

29952 

byt := DT_TO_BYTE(DT#1970-01-15-05:05:05);

129 

str := DT_TO_STRING(DT#1998-02-13-14:20);

'DT#1998-02-13-14:20'

Examples in IL

Examples in IL with conversion results:

Example

Result 

LD            D#1970-01-01
DATE_TO_BOOL
ST            b

FALSE 

LD            D#1970-01-01
DATE_TO_INT
ST            i

29952 

LD            D#1970-01-15-05:05:
DATE_TO_BYTE
ST            byt

129 

LD            D#1998-02-13-14:20
DATE_TO_STRI...
ST            str

'DT#1998-02-13-14:20'

Examples in FBD