Conversion instructions
148
Part II IEC Instructions
DWORD_TO_INT
DOUBLE WORD in INTEGER
To add an enable input and enable output to the instruction, select [With EN/ENO] from the
"Instructions" pane (LD, FBD or IL editor). To reuse an instruction select "Recently used" from the
context menu or press <Ctrl>+<Shift>+<v> in the programming window.
PLC types
Availability of DWORD_TO_INT (see page 1319)
The first 16 bits of the input variable are assigned to the output variable.
Data type I/O Function
DWORD input input data type
INT output conversion result
Description
DWORD_TO_INT converts a value of the data type DWORD into a value of the data type INT.
Data types
Example
In this example, the same POU header is used for all programming languages. For an example
using IL (instruction list), please refer to the online help.
POU header
All input and output variables used for programming this function have been declared in the POU
header.
In this example the input variable (DWORD _value) has been declared. Instead, you may enter a
constant directly at the input contact of a function.
Body
DWORD_value of the data type DOUBLE WORD (32-bit) is converted into an INTEGER value
(16-bit). The converted value is written into INT_value.
LD
ST
When programming with structured text, enter the following:
INT_value:=DWORD_TO_INT(DWORD_value);