Documentation
Int Composition (BD55)
Integer Composition
Block name
BD55_INT_COMPOSITION
ST call
PROGRAM BD55
VAR
LINT1:LINT;
ARRAY1 : ARRAY [0..3] OF DINT := [3, 6, 10, 5];
LOW : ARRAY[0..3] OF LIB.CORE.V1_0.BIT32:= [1, 5, 9, 13];
HIGH : ARRAY[0..3] OF LIB.CORE.V1_0.BIT32:= [4, 8, 12, 16];
END_VAR
LINT1:= LIB.CORE.V1_0.BD55_INT_COMPOSITION(LOW := LOW ,HIGH := HIGH ,BS:=TRUE,IN:=ARRAY1);
END_PROGRAM
Library
LIB\CORE
Version
V1.0
Description
The block composes the output value from up to 4 binary input vectors with defined positioning within the output vector.
Inputs
| Input | Type | Description | Default value |
|---|---|---|---|
| IN | DINT | Input data, up to 4 inputs possible | [0] |
| BS | BOOL | Sign of the output value | False |
| LOW | ARRAY[0..3] OF LIB.CORE.V1_0.BIT32 | first bits of the range, array [0..3] with values 1 to 32 | [1] |
| HIGH | ARRAY[0..3] OF LIB.CORE.V1_0.BIT32 | last bits of the range, array [0..3] with values 1 to 32 | [1] |
Outputs
| Output | Type | Description |
|---|---|---|
| => | lint | Output value |
Function
The block composes the output integer value from up to 4 parts according to given parameters in,low, and high. The output value sign is given by the bs variable. E.g. the input value will have 4 bits and shall be inserted as 5th to 8th bit of the output value: low = [5,0,0,0], high = [8,0,0,0]. The input value itself is e.g. 6: in = [6,0,0,0]. Note that if the ranges overlap there may be undefined behaviour of the output value.
Application example
Input value composition, in0 occupies bits 1 to 4, in2 occupies bits 5 to 8 etc. The parameters are then set as low = [1,5,9,13] and high = [4,8,12,16].