Panasonic FP Series Programming Manual page 257

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Selection instructions

The function Multiplexer selects an input variable and writes its value into the output variable. The

1st input variable determines which input variable (IN1or IN2 ...) is to be written into the output

variable. The function MUX can be configured for any desired number of inputs.

To add an enable input and enable output to the instruction, select [With EN/ENO] from the

"Instructions" pane (LD, FBD or IL editor). To reuse an instruction select "Recently used" from the

context menu or press <Ctrl>+<Shift>+<v> in the programming window.

Availability of MUX (see page 1328)

 When using the data type STRING with small PLCs like FP-e or FP0,

make sure that the length of the result string is equal to or greater than

the length of the source string.

 For further information refer to the online help: Upgrade Problems with

Data Type STRING

 The difference between the functions MUX and SEL (see page 257) is

that in MUX with an integer value you can select between plural

channels, and in SEL with a Boolean value only between two channels.

 The number of input contacts lies in the range of 2 to 28.

all data types

The 2nd and 3rd input variables must be of the same data type.

In this example, the same POU header is used for all programming languages. For an example

using IL (instruction list), please refer to the online help.

All input and output variables used for programming this function have been declared in the POU

In this example the input variables (channel_select, channel_0 and channel_1) have been

declared. Instead, you may enter a constant directly at the input contact of a function.

Select value from multiple channels

selects channel for 2nd or 3rd input value to be written to

output as 2nd and