SECTION 1
GENERAL INFORMATION
1.1 INTRODUCTION
This manual provides information pertaining to the installation and operation of the Model 2022
Interface (RFID, Inc. Part No. 710-0018-00), or Model 2022E (the E signifying enclosure) (RFID,
Inc. Part No. 800-0070-00).
1.2 DESCRIPTION
The Interface Model 2022 is termed Multiplex because it can manage up to 16 addressable Readers
and Antennas using time division multiplexing. The Interface Model 2002 provides a full-duplex,
asynchronous bit serial data stream which will interface to various equipment compatible with
RS-232-C,RS-422-A, or RS-423-A specifications. The Interface is configured as Data Terminal
Equipment (DTE).
The 2022 detects, filters and amplifies the data signals relayed by any of the compatible Readers
(Models 1845 and 1885) and converts that data into a serial string. Basically, the Interface provides
RF to digital translation of the signal produced by RFID, Inc. RF Electronic Labels, which are referred
to as "Tags", when placed in the proximity of a Reader/Antenna. Advanced error detection algorithms
provide error-free operation. All messages are transmitted in printable ASCII characters in
transmit-on-receipt or polled mode.
The Interface provides on its ENABLE outputs, pulses that control the operation of Addressable
Readers. In normal operation the Interface produces a pulse to disable all connected Readers, then
follows that with pulses that enable each Reader one at a time. During the brief period that each Reader
is enabled, the SIGNAL inputs are monitored for the presence of a Tag, and if detected, that Tag's
contents are reported along with a hexadecimal channel number identifying the Reader at which the Tag
was detected.
Via the serial connection, over which Tags are reported, the Interface can also be commanded to buffer
Tags, report multiple Tag readings, repeat the last message, test itself, reset, or delete specified Readers
from its polling loop.
The Eurocard format paired with the single supply voltage requirement simplify its integration into
existing installations. Connection to the Reader is made using low-cost shielded twisted pair cables and
angle entry terminals simplify installation.
To Next Page
Loading...