User's Manual

29.05.2007 Page 6 of 59
ASR500 Reader Operation
1. Introduction
Before attempting to use the product for the first time read through the user manual carefully.
The functional description of the ASR500 reader will help you make best use of the full capabili-
ties of the system. The protocol description in chapter 5 provides you with all the information
you need to integrate the reader into your own application software.
1.1 Definition of terms
Explanation of abbreviations used in this user manual
RF: Radio Frequency (in this case the long-wave band)
RFID: Radio Frequency Identification. Method to transmit data without contact us-
ing transponders.
Reader: A device which is able to communicate with transponders using an internal
or external antenna. The reader generates a high frequency field in order to
get the data of a transponder. The received data is transmitted by an inter-
face to an external controller (e.g. PC etc.).
Transponder: Data carrier for RFID applications, available in various models and types.
Raw data: Complete data contents of a transponder, that means ID and additional in-
formation (for example header or trailer).
ID: Identification number of a transponder.
ISO 11784/85: International standard regarding the use of RFID technology in the identifica-
tion of animals; it defines the transponder types to be supported and the ID
notation.
FDX: Transponder type, which transmits its data while the HF field, is on (full du-
plex).
FDX-B: FDX transponder with 128 bits of raw data, ID notation in compliance with
ISO 11784/85.
H4002: FDX transponder with 64 bits of raw data.
HDX: Transponder type, which transmits its data directly after HF field, goes off
(half duplex). 104 bits of raw data, ID notation in compliance with ISO
11784/85.
Master mode: Read mode in which the reader works as master. The reader makes field on
and off permanently and transmits received transponder data automatically.
Slave request: Read mode in which the field is normally off. The reader makes field on and
off only after a request by the controller. If a transponder was read during
activation time the ID is transmitted to the controller.
Slave continuous: Read mode in which the reader makes field on and off permanently. The
reader transmits received transponder data only after a request from an ex-
ternal controller.