Equipments (Devices) > CFW100 > Ladder > Data Transfer

Block that creates 16 new BOOL variables from the decomposition of a WORD variable.

Ladder Representation

DEMUX_block

Block Structure

Variable Type	Name	Data Type	Description
VAR_INPUT	EN	BOOL	Block enabling
VAR_INPUT	Word	WORD UINT INT	Input variable of 16 bits
VAR_OUTPUT	ENO	BOOL	End of operation
VAR_OUTPUT	Bit0 – Bit15	BOOL	Bit of the corresponding position of Word

Operation

When this block has a TRUE value in EN, it decomposes the input variable in Word 15 Boolean values stored in Bit0 to Bit15 variables. Bit0 corresponds to the LSB (least significant bit) and Bit15 corresponds to the MSB (most significant bit).

When EN has FALSE value, output variables remain unchanged.

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

Block Flowchart

DEMUX_flowchart

Example in Ladder

DEMUX_example01

The example above decomposes the value of MYWORD in Boolean values, which are stored in the output variables BIT0 to Bit15. The block ends successfully and the ENO output is activated.

Example in ST

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

VAR

MYWORD : WORD := 45985;

BIT0 : BOOL;

BIT1 : BOOL;

BIT2 : BOOL;

BIT3 : BOOL;

BIT4 : BOOL;

BIT5 : BOOL;

BIT6 : BOOL;

BIT7 : BOOL;

BIT8 : BOOL;

BIT9 : BOOL;

BIT10 : BOOL;

BIT11 : BOOL;

BIT12 : BOOL;

BIT13 : BOOL;

BIT14 : BOOL;

BIT15 : BOOL;

END_VAR

DO1 := FB_DEMUX(

EN:=DI1,

Word0:=MYWORD,

Bit0=>BIT0,

Bit1=>BIT1,

Bit2=>BIT2,

Bit3=>BIT3,

Bit4=>BIT4,

Bit5=>BIT5,

Bit6=>BIT6,

Bit7=>BIT7,

Bit8=>BIT8,

Bit9=>BIT9,

Bit10=>BIT10,

Bit11=>BIT11,

Bit12=>BIT12,

Bit13=>BIT13,

Bit14=>BIT14,

Bit15=>BIT15);