WORDS_TO_DWORD

The WORDS_TO_DWORD block concatenates two WORD values into one DWORD value.

Ladder Representation

Block Structure

Variable Type	Name	Data Type	Description
VAR_INPUT	EN	BOOL	Block enable.
VAR_INPUT	Value1	WORD / UINT / INT	First WORD, least significant.
VAR_INPUT	Value2	WORD / UINT / INT	Second WORD, most significant.
VAR_OUTPUT	ENO	BOOL	End of operation.
VAR_OUTPUT	Result	DWORD / UDINT / DINT	DWORD value.

Operation

When EN is TRUE, the block concatenates Value1 and Value2 to build a 32-bit DWORD value. Value1 is the least significant WORD and Value2 is the most significant WORD.

When EN is FALSE, Result remains unchanged.

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

Execution Flowchart

Examples

Ladder

The Ladder examples concatenate two WORD inputs into one DWORD output. The block finishes successfully and activates ENO.

Structured Text

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

Structured Text

VAR
    VAL1 : INT := 4;
    VAL2 : INT := 1;
    RESULT : DINT;
END_VAR

RESULT := FB_WORDS_TO_DWORD(
    EN := DI1,
    Value1 := VAL1,
    Value2 := VAL2,
    ENO => DO1
);