title: Response code indication while using Modbus RTU
body: <p>I am using Modbus RTU protocol to read data. I have Slave Id = 1 and Modbus Address = 40023. I am configuring Start Address = 22. <strong>Is it correct with my Modbus Address?</strong></p>
  
  <p>If I am configuring following details:</p>
  
  <blockquote>
    <p>Slave Id= 1 Baud Rate = 19200 Stop Bits = 2 Data Bits = 8 Parity =
    None Start Address = 22</p>
  </blockquote>
  
  <p>I am reading data with following code </p>
  
  <pre><code>var master = ModbusSerialMaster.CreateRtu(port);
  ushort[] registers = master.ReadHoldingRegisters(slaveId, startAddress, 1);  //2 is number of points
  </code></pre>
  
  <p>With these details I am getting this response in console:
  <strong>INFO Modbus.IO.ModbusSerialTransport - TX: 1, 3, 2, 0, 0, 184, 68</strong></p>
  
  <p>In above response I only know some of them what they indicate like first digit 1 indicate Slave Id, 3 indicate function Code, 22 indicate Start Address, 2 indicate number of points.</p>
  
  <p>Can anyone please explain me remaining code? What they indicate?</p>
  
  <p>Thanks!</p>