7.7.5 MUX

Function

Select one function from multiple selections, select the input pin number based on the value of K, and assign it to OUT. If K equals 1, the value of the IN1 pin is obtained, similar to OUT:=IN1, and so on. When the value of K is not equal to the pin number, OUT:=DFLT

LD graphics

Parameter description

Interface variable	Declaration	Data type	Description
K	Var_Input	UINT	Select the output object
DFLT	Var_Input	ANY_ELEMENTARY	If K is not in the range [1...n], the object of OUT output
IN1	Var_Input	ANY_ELEMENTARY	Object to be selected
IN2	Var_Input	ANY_ELEMENTARY	Object to be selected
Function name	Return value	ANY_ELEMENTARY	Output the selected object

warning

• The parameter types of parameters DFLT, IN1, IN2 and OUT must be the same, otherwise the function cannot be executed
• MUX is an extensible function, and inputs can be added by clicking the "+" in the graph
• ANY_ELEMENTARY includes all basic types (bit strings, integers, floating point numbers, characters and strings, times and dates)

Example

• LD sample animation is as follows:

• ST example is shown in the following code:

OUT:=MUX(
    K:=4,
    DFLT:=1,
    IN1:=10,
    IN2:=100
);
OUT2:=MUX(
    K:=4,
    DFLT:=1,
    IN1:=10,
    IN2:=100,
    IN3:=1000,
    IN4:=10000,
    IN5:=50000
);