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5.6 Standard Selection Functions
170
FXCPU Structured Programming Manual
(Application Functions)
5.6.5 MUX(_E)
Outline
This function selects data, and outputs the selected data.
1. Format
*1. Output variable
2. Set data
In explanation of functions, I/O variables inside ( ) are described.
Explanation of function and operation
1) This function outputs either one among values stored in devices specified in … to a device specified
in in accordance with the value specified in using the data type of data stored in devices
specified in ….
a) When the value specified in is "1", this function outputs the value stored in a device specified in
to a device specified in .
b) When the value specified in is "n", this function outputs the value stored in a device specified in
to a device specified in .
Example: When the data type is word [signed]
2) When a value input to is outside the pin number range for …, this function outputs an indefinite
value to a device specified in .
(An operation error does not occur. "MUX_E" outputs "FALSE" from ENO.)
3) The number of pins in can be changed.
FX3U(C) FX3G FX2N(C) FX1N(C) FX1S
FX
U
/FX
2C
FX0N FX0(S)
Function name
Expression in each language
Structured ladder ST
MUX
MUX(_K,_IN,_IN);
Example:
D30:=
MUX(D0,D10,D20);
MUX_E
MUX_E(EN,_K,_IN,_IN,Output
label);
Example:
MUX_E(X000,D0,D10,D20,D30);
Variable Description Data type
Input
variable
EN Execution condition Bit
_K ( )
Selection data, or word device which stores such data Word [signed]
_IN ( …)
Selectable data, or word device which stores such data ANY
Output
variable
ENO Execution status Bit
*1 Word device which will store the selected data ANY
MUX
*1
D30D0 _K
_IND10
_IND20
MUX_E
EN ENO
*1
D30
X000
D0
_K
_IND10
_IND20
n
s1
s1
d n
s1
n
s1
d
n
sn d
MUX
K
_IN
_IN
1234
Word [signed] data
Word [signed] data
1234
Word [signed] data
1
Word [signed] data
5678
n
s1
d
s