Decimal to Binary signed 2's complement

[Steve-Mcl]

Firstly, in order to make code more readable and importable it is important to surround your code with three backticks
```
like this
```

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See this post for more details - How to share code or flow json

@Aivaras

Maybe you can repair this code ?

@Aivaras

Input is a string '3328'

var input = Number(msg.payload);
msg.payload = input.toString(2).padStart(16,"0") ;
return msg;