Bit decomposition
Block name
BD19_BIT_DECOMPOSITION
ST call
PROGRAM BD19_TEST VAR I1: LINT; O1: ARRAY [0 .. 63] OF BOOL; FB: LIB.CORE.V1_0.BD19_BIT_DECOMPOSITION; END_VAR FB(IN := I1, OUT=>O1); END_PROGRAM
Library
LIB\CORE
Version
V1.0
Description
The function decomposes an integer value to bits (which are formed in an array).
Inputs
| Input | Type | Description |
| ENABLED | BOOL | Enable of function. |
| IN | LINT | Input value |
Outputs
| Output | Type | Description |
| OUT | ARRAY [0 .. 63] OF BOOL | Output array of values |
| BS | BOOL | Sign of the out output, if OUT<0 then BS=FALSE |
Function
The block decomposes the input integer value IN to individual bits OUT[0..63]. If IN<0 then BS=FALSE, else BS=TRUE.
Note: The output array elements are numbered from 0, while the optional binary outputs out1, out2, out3 etc. start with index 1. Thus, e.g. out3 binary output is the value of the out[2] array element.
Application example
The block is used to extract bits from an integer value, i.e. status and alarm bits communicated from a 3rd party device.