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MUX2 Multiplexer |
  
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MUX2 Multiplexer |
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Block that creates a new DWORD variable from the concatenation of 32 BOOL variables.
Ladder Representation
Block Structure
Variable Type |
Name |
Data Type |
Description |
VAR_INPUT |
EN |
BOOL |
Block enabling |
Bit0 – Bit31 |
BOOL |
Bit of the corresponding position in the new word |
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VAR_OUTPUT |
ENO |
BOOL |
End of operation |
DWord |
DWORD UDINT DINT |
New word formed from the input bits |
Operation
When this block has a TRUE value in EN, it concatenates Boolean values of the input variables and stores this value in the variable DWord. Bit0 corresponds to LSB (least significant bit) and Bit31 corresponds to the MSB (most significant bit).
When EN has FALSE value, Word remains unchanged.
The ENO value forwards to the next Ladder block the EN value after the operation is completed.
Block Flowchart
Example in Ladder
The above example concatenates the Boolean values of the input bits of the block to form the output word stored in MYDWORD. 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 ARRAY_BOOL : ARRAY[0..31] OF BOOL := [ 0, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 0]; MYDWORD : DWORD; END_VAR
MYDWORD := FB_MUX2( EN:=DI1, Bit0:=ARRAY_BOOL[0], Bit1:=ARRAY_BOOL[1], Bit2:=ARRAY_BOOL[2], Bit3:=ARRAY_BOOL[3], Bit4:=ARRAY_BOOL[4], Bit5:=ARRAY_BOOL[5], Bit6:=ARRAY_BOOL[6], Bit7:=ARRAY_BOOL[7], Bit8:=ARRAY_BOOL[8], Bit9:=ARRAY_BOOL[9], Bit10:=ARRAY_BOOL[10], Bit11:=ARRAY_BOOL[11], Bit12:=ARRAY_BOOL[12], Bit13:=ARRAY_BOOL[13], Bit14:=ARRAY_BOOL[14], Bit15:=ARRAY_BOOL[15], Bit16:=ARRAY_BOOL[16], Bit17:=ARRAY_BOOL[17], Bit18:=ARRAY_BOOL[18], Bit19:=ARRAY_BOOL[19], Bit20:=ARRAY_BOOL[20], Bit21:=ARRAY_BOOL[21], Bit22:=ARRAY_BOOL[22], Bit23:=ARRAY_BOOL[23], Bit24:=ARRAY_BOOL[24], Bit25:=ARRAY_BOOL[25], Bit26:=ARRAY_BOOL[26], Bit27:=ARRAY_BOOL[27], Bit28:=ARRAY_BOOL[28], Bit29:=ARRAY_BOOL[29], Bit30:=ARRAY_BOOL[30], Bit31:=ARRAY_BOOL[31], ENO=>DO1);
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