DWORD_TO_REAL

The DWORD_TO_REAL block converts a DWORD value to REAL.

Ladder Representation

Variable Type	Name	Data Type	Description
VAR_INPUT	EN	BOOL	Block enable.
VAR_INPUT	Value	DWORD / UDINT / DINT	DWORD value.
VAR_OUTPUT	ENO	BOOL	End of operation.
VAR_OUTPUT	Result	REAL	REAL value.

When EN is TRUE, the block interprets Value as a DWORD value, converts it to REAL, and stores the result in Result.

When EN is FALSE, Result remains unchanged.

The ENO output passes the EN state to the next Ladder block after the operation is finished.

DWORD_TO_REAL execution flowchart

The Ladder examples convert VALUE from DWORD to REAL, store the final value in RESULT, and activate ENO when the block finishes successfully.

DWORD_TO_REAL Ladder example

DWORD_TO_REAL Ladder example result

The following Structured Text code applies the same logic shown in the Ladder example.

Structured Text
VAR
    VALUE : DINT := 123954851;
    RESULT : REAL;
END_VAR

RESULT := FB_DWORD_TO_REAL(EN:=DI1, Value:=VALUE, ENO=>DO1);