var net = require('net');

var client = net.connect({host: '10.181.121.21', port: 5552},
    function() {
  console.log('connected to server!');
  client.write('TYPE=PARAMGET?Axle Weight Max Permited&');
});

client.on('data', function(data) {
  console.log(data.toString());
  client.end();
});

client.on('end', function() {
  console.log('disconnected from server');
});