/// <summary>
/// Method for checking if port number of new meter is uniq
/// </summary>
/// <param name="portNumber">portNumber to check</param>
/// <param name="portNumber">unitId to check</param>
/// <returns>is portNumber uniq</returns>
public Boolean CheckNewPortNumberAndUnitId(int portNumber, byte unitId)
{
if (portNumber <= 0 || unitId <= 0)
{
return(false);
}
//There should be no device with the same combination - unitId/portNumber
return(ModbusFactory.GetDevice(portNumber, unitId) == null);
}