it still don't sending nothing..
I put
RFID.write(0xAB);
RFID.write(0x02);
RFID.write(0x02);
in void setup() and i added while(RFID.available() < 6) { } just after if(RFID.available()>0){ so now it wait until it receive at least 6 bytes, right?
I think is correct now, right?
I attach a screenshot of reading instructions from the reader manual
