User's Manual

YR903 UHF RFID Evaluation Kit User Manual V1.1
3. Develop your own RFID Application
Most functions of the reader can be operated through the demo. But in practical applications, user might
need to develop their own applications. Please defer to the document: UHF RFID Reader Serial
Interface Protocol V3.1. The reader follows the definition both of the RS - 232 and TCP / IP interface.
Demo provides an important function of recording serial transmission, so that users can quickly grasp the
content of communication protocol in practice. Please defer to the screenshot below and select Activate
Serial Port Monitor, all uplink and downlink serial data will be recorded, as illustrated below:
Notes:
1. Response speed of Demo will slow down after opening the Activate Serial Port Monitor. Please turn
off this function when it is not needed.
2. Data in violet blue color is sent to the reader by PC, and data in red color is the returned information
from reader to PC.
3. Manual Input Command is used to debug serial command, which could calculate the checksum
automatically.
4. UHF RFID Reader Serial Interface Protocol V3.1, this document includes the integral source codes
of the demo (Based on C # of .Net platform) to help users develop applications on the reader. Thank you!