====== Bit composition, 8 bits ======

{{:en:mervis-ide:35-help:bd18_8b.png}}

===== Function name =====

BD18_BIT_COMPOSITION_8BIT

===== ST call =====

<code st-iec>
PROGRAM BD18_8B_TEST

VAR 

    IN1: ARRAY [0 .. 7] OF BOOL;

    O1: USINT;

END_VAR



    O1:= LIB.Core.V1_0.BD18_BIT_COMPOSITION_8BIT(IN := IN1);

END_PROGRAM
</code>

===== Library =====

LIB\CORE

===== Version =====

V1.0

===== Description =====

The function brings 8 bits together to create an integer value.

===== Inputs =====

|Input  |Type                  |Description                 |
|ENABLED|BOOL                  |Enable function             |
|IN     |ARRAY [0 .. 7] OF BOOL|Array of input values (bits)|
|IN0    |BOOL                  |First input (simple type)   |
|IN1    |BOOL                  |Second input (simple type)  |

===== Outputs =====

|Output|Type |Description |
|OUT   |USINT|Output value|

===== Function =====

The block brings together the input bit values //IN[0..7]// to a USINT (unsigned short integer) output //out//.

===== Application example =====

{{:en:mervis-ide:35-help:bd18_8b_example.png}}\\


At the example, simple type (BOOL) inputs are used rather than the input array of BOOLs. The block is used e.g. to create a unit status value, such as Off / On / Auto which corresponds to values of 0 / 1 / 2.