 void setup()
 {
   modbus_construct(&packets[PACKET1], 1, READ_HOLDING_REGISTERS, 0, 1, 0);
-  modbus_construct(&packets[PACKET2], 229, PRESET_MULTIPLE_REGISTERS, 1, 1, 0);
-  //229 es el id del esclavo
+  modbus_construct(&packets[PACKET2], ID, PRESET_MULTIPLE_REGISTERS, 1, 1, 0);
   modbus_configure(&Serial, baud, SERIAL_8N1, timeout, polling, retry_count, TxEnablePin, packets, TOTAL_NO_OF_PACKETS, regs);
   
   pinMode(LED, OUTPUT);

  PACKET2,
  TOTAL_NO_OF_PACKETS // leave this last entry
};
int sensorValue = 0;        // value read from the pot
int outputValue = 0; 

Packet packets[TOTAL_NO_OF_PACKETS];


#define timeout 1000
#define polling 2000
#define retry_count 10
#define TxEnablePin 2 
#define LED 9
//ID slave node 
#define ID 10

#define TOTAL_NO_OF_REGISTERS 1

