gistfile1.txt

var SerialPort = require('serialport').SerialPort;
var modbus = require('../lib');
 
var serialPort = new SerialPort('COM8', {
baudRate: 9600
});
 
serialPort.write = function(data)
{
console.log('TX:', data);
SerialPort.prototype.write.call(this, data);
};
 
serialPort.on('data', function(data)
{
console.log('RX:', data);
//THIS DOES EXECUTE THOUGH..they both talk fine then so the code seems fine just the once open never happens..
master.readCoils(0, 8, 
  {
    unit: 245,
    interval: 1000,
    onComplete: function(err, res)
    {
      if (err)
      {
      console.error(err.message);
      }
      else
      {
      console.log(res.toString());
      }
    }
  });
});
 
var master = modbus.createMaster
({
  transport: 
  {
    type: 'rtu', // ip, ascii or rtu
    eofTimeout: 50,
    connection: {
    type: 'serial', // tcp, udp or serial
    serialPort: serialPort
    }
  }
});
 
master.once('open', function()
{
  //IT NEVER GETS TO HERE SO NOTHING HAPPENS
  console.log("opened master");
  master.readCoils(0, 8, 
  {
    unit: 245,
    interval: 1000,
    onComplete: function(err, res)
    {
      if (err)
      {
      console.error(err.message);
      }
      else
      {
      console.log(res.toString());
      }
    }
  });
});