Equipments (Devices) > SCA06 > Ladder > Conversion > DWORD > BYTES_TO

Block that performs the conversion of four 8 bits (BYTE) values into a 32 bits (DWORD) value.

Ladder Representation

BYTES_TO_DWORD_block

Block Structure

Variable Type	Name	Data type	Description
VAR_INPUT	EN	BOOL	Block enabling
	Value1	BYTE USINT SINT	Value in BYTE (1st byte - LSB)
	Value2	BYTE USINT SINT	Value in BYTE
	Value3	BYTE USINT SINT	Value in BYTE
	Value4	BYTE USINT SINT	Value in BYTE (4th byte - MSB)
VAR_OUTPUT	ENO	BOOL	End of operation
VAR_OUTPUT	Result	DWORD UDINT DINT	Value in DWORD

Operation

When this block has a TRUE value in EN, it interprets the Value1, Value2, Value3 and Value4 values as BYTE and converts it into a DWORD variable, storing in Result.

When EN has FALSE value, Result remains unchanged.

The ENO value forwards to the next Ladder block the EN value after the operation is completed.

Block Flowchart

BYTES_TO_DWORD_flowchart

Example in Ladder

BYTES_TO_DWORD_example01

BYTES_TO_DWORD_example02

The examples above perform the conversion of four variables VALUE1..4, in BYTE, into a DWORD value storing the final result in RESULT. The block ends with success and ENO output is activated.

Example in ST

The example below displays the instructions for applying the example above in the ST language.

VAR

VALUE1 : SINT := 0;

VALUE2 : SINT := 1;

VALUE3 : SINT := 0;

VALUE4 : SINT := 0;

RESULT : DINT;

END_VAR

RESULT := FB_BYTES_TO_DWORD(

EN:=DI1,

Value1:=VALUE1,

Value2:=VALUE2,

Value3:=VALUE3,

Value4:=VALUE4,

ENO=>DO1);