const SerialPort = require('serialport');
const Readline = SerialPort.parsers.Readline;
var comPort = 'COM7',
    wasalive,
    lastDataTime,
    lastresult,
    count = 0,
    lastDataTime,
    comStatus,
    error;
var port = new SerialPort(comPort, {autoOpen: false, baudRate: 9600});