According to the manual: https://files.unipi.technology/index.php/s/zTmrEbQEvifNd6W?path=%2FProducts%2FNeuron%2FDocumentation#pdfviewer
chapter 2.2.1 LED diodedescription
and later MWD description. It means you do not communicate with the devices. Which is also notable that there is no output when you run the server by hand.