I really do not know, All i can tell you is that it says not found. If I try the scanner with an LCD I have i see it operates correctly and finds the LCD Address.
On the data sheet is says you can program the address but it only allows 1 time. I have not done this as yet so is it possible that it will not answer an inquiry (Whatever the scanner is sending) but will respond to a write command if the correct default address is used?