/// <summary>
/// Sends a request to addressed slave. Returns read and converted to string answer.
/// </summary>
/// <param name="messageFrame">A frame containing an address, a function code and a message to send.</param>
/// <returns></returns>
public MessageFrame SendRequest(MessageFrame messageFrame)
{
SendMessage(messageFrame);
ushort[] rawResponse = _master.ReadHoldingRegisters((byte)messageFrame.TargetSlaveAddress,
(ushort)HoldingRegisterStartAddress, 123 * 2); //Read all available registers.
var response = new MessageFrame();
response.ReadMessageFromShorts(rawResponse);
return(response);
}