Programmable powerstrip modbus slave

/* -----------------------------------------------------------------------------------
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: 6 June 2013, by Ayush Sagar for GSoc 2013
-----------------------------------------------------------------------------------*/

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

/*
9600 baud to be chosen with 8 data bits, no parity, 1 stop bit (8N1).
*/

//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);

/*
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();
}
/*-----------------------------------------------------------------------------------*/