Modbus RTU USB powerstrip

/* -----------------------------------------------------------------------------------
A sketch for the modbus RTU USB power strip based on the arduino-modbus-slave library by Jason Vreeland released on 3/7/2010 under GNU license
Rev: 30 July 2013, by Ayush Sagar for GSoc 2013
-----------------------------------------------------------------------------------*/

#include <modbus.h>
#include <modbusDevice.h>
#include <modbusRegBank.h>
#include <modbusSlave.h>

//Setup register bank
//All of the data accumulated will be stored here
modbusDevice regBank;
//Create the modbus slave protocol handler
modbusSlave slave;

void setup()
{

//Assign the modbus slave ID.
  regBank.setId(1);

/*
modbus registers follow the following format
00001-09999  Coils (Digital Outputs), A master device can read and write to these registers
10001-19999  Discrete Inputs (Digital Inputs), A master device can only read the values from these registers
30001-39999  Input Registers (Analog Inputs), A master device can only read the values from these registers
40001-49999  Holding Registers (Analog Outputs), A master device can read and write to these registers

Analog values are 16 bit unsigned words stored with a range of 0-32767
Digital values are stored as bytes, a zero value is OFF and any nonzer value is ON

*/

//Add Digital Output registers (Coils) 00001-00016 to the register bank
  regBank.add(1);
  regBank.add(2);
  regBank.add(3);
  regBank.add(4);
  regBank.add(5);
  regBank.add(6);
  regBank.add(7);
  regBank.add(8);
  regBank.add(9);
  regBank.add(10);
  regBank.add(11);
  regBank.add(12);
/*

//Not adding other registers because they are not needed

Assign the modbus device object to the protocol handler
This is where the protocol handler will look to read and write
register data.  Currently, a modbus slave protocol handler may
only have one device assigned to it.
*/
  slave._device = &regBank;

// Initialize the serial port for coms at 9600 baud
  slave.setBaud(9600);

// Initialize Aruino IO pins
  pinMode(2, OUTPUT);
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(6, OUTPUT);
  pinMode(7, OUTPUT);
  pinMode(8, OUTPUT);
  pinMode(9, OUTPUT);
  pinMode(10, OUTPUT);
  pinMode(11, OUTPUT);
  pinMode(12, OUTPUT);
  pinMode(13, OUTPUT);
}
void loop()
{
  digitalWrite(2,regBank.get(1));
  digitalWrite(3,regBank.get(2));
  digitalWrite(4,regBank.get(3));
  digitalWrite(5,regBank.get(4));
  digitalWrite(6,regBank.get(5));
  digitalWrite(7,regBank.get(6));
  digitalWrite(8,regBank.get(7));
  digitalWrite(9,regBank.get(8));
  digitalWrite(10,regBank.get(9));
  digitalWrite(11,regBank.get(10));
  digitalWrite(12,regBank.get(11));
  digitalWrite(13,regBank.get(12));
  slave.run();
}
/*-----------------------------------------------------------------------------------*/