loop only runs once

Projects General Guidance
3

Thanks James, it works in the main receivers of the project, but I tried as below and its the same ?

 #include <NewSoftSerial.h>
      #define RXPIN 14 //   
      #define TXPIN 15 //   
     #define SIMBAUD 9600  
   int n = 1;
int PIN = 40;      
       NewSoftSerial SIM(RXPIN, TXPIN);
int tile [15];

  void setup ()  {
     SIM.begin(SIMBAUD);      
     Serial.begin(9600);   }
  //***************************************************************************************
  void loop()   { 
 if (SIM.available() > 0) {   // get incoming byte:
  Serial.println(" something available ");   
        for (int n = 0; n <=15; n++ ){        
       tile [n] =  SIM.read ();  
          Serial.println(tile [n]);  
         }       
       }  // end of is serial avail  
   }// end of loop