User's Manual

RFID System S21 Configuration Principles
Introduction 1-3
By using a RFID system comprising of a population of Transponders and strategically placed
Readers and Exciters, you can electronically monitor the path of test letters through the collection
and delivery process, particularly at points between Postal administrations and their agents.
Each probe letter includes a RFID Transponder bearing a unique identification. The probe letters
are posted, sorted, and delivered in the same way as normal letters. As they pass pre-determined
points en-route (Reading Points/identification zones), the Transponders are identified. The
collected information is then read and stored on local computers. This information is downloaded
on demand to a Central Management System (CMS).
The Postal RFID System includes the following main specific equipment:
• Transponders PT21 carrying the identification data
• Exciters EX21 to generate an electromagnetic (LF) field that excites the Transponder PT21
• Readers RD21 to receive data transmitted by the Transponder PT21(UHF) and to relay this
information via the RS-485 interface to the main computer
• Power Supply TRM95 to power Readers RD21 and Exciters EX21 from the local AC main
supply.
IMPORTANT This manual refers to S21 features and equipment associated with RFID System S21.
RFID System S21 Configuration Principles
The RFID System S21 is highly configurable, allowing you to setup operational parameters for the
optimum performance of the System. The sections that follow give some basic information
regarding the RFID System S21 configuration. A detailed description of the configuration, with a
focus on an IPC implementation, is given in Chapter 5, Configuration and Operation.
Communication Links There are several communication links between the components of the RFID System S21. As a
general rule, all equipment attached to a particular link must have the same parameters settings to
communicate. Some communication links can be configured, others, however, have fixed
configurations, as follows:
• Reader-to-Transponder: excitation (LF=125.0 kHz - uplink) - configurable;
writing (LF) - fixed configuration.
• Transponder-to-Reader (UHF-433.92 MHz - downlink) - configurable.
• Reader-to-Exciter and Exciter-to-Reader (RS485_COM, RS485_SGN) - fixed configuration.
• Reader- to-Main PC and Main PC-to-Reader (RS232 or RS485) - configurable.
System Parameters Parameters controlling the RFID System S21’s configuration are logically organized in groups. For
a detailed explanation on the meaning and usage of the parameters, refer to the RFID System S21
Reference Guide. The parameters settings that control the hardware configuration, is described in
Chapter 3, Theory of Operation in the RFID System S21 Technical Guide. This chapter gives
reasons for using certain parameters for configuring the hardware.
System Code A Reader RD21 needs a System Code to function properly. You use the ISC parameter to set the
System Code the first time. The System Code is a specially encoded number that distinguishes the
RFID System from all other similar systems in use. By obtaining your System Code from Lyngsoe
Industries, you are guaranteed a unique System Code.