Why do you think that data is weird?
As the data are extreme long than normal EPC. Also for a same tag, the data sometimes is different if I attach to the reader multiple time.
Also how is it wired up? Your code implies you are using the hardware serial port to both talk to the reader and talk to the serial monitor, you can't do that.
Ya. I'm using hardware serial port. But even when I use software serial the result is still the same.
The reader is using rs232 connection for communication with a microcontroller. I'm very struggling in Arduino RS232 because I know in order for Arduino to communicate with RS232 device, I need a RS232 shield. But when I used RS232 shield from DFrobot the result is also the same.
Regards,
Nick