Texas Instruments 2000 series Manuale utente

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1 11-06-22-095 07/01

Series 2000 Reader System

Reader S251B (RI-STU-251B)

For detailed operating, connection and set-up instructions, please refer to the

corresponding Reference Guide (11-06-21-054) available from our TIRIS Document

Center at

General Purpose Input / Output

Antenna

Power Fuse Synchronization

+ -

RS422 / 485

RS232

CTL Setup

O.C. - I/O

Read O.K.

TX Active

EMI

Antenna

Tuning

O.K.

L á

RS422

RS485

DAT

L â

RF Power Output Adj.

EMI / Sync. Level Adj.

Reader S251B

Power Range Setting

115

EF1 H

1 1

On On

123

Power Supply

Connect a regulated dc power supply (between 10 and 24V providing a minimum of 2A)

to the reader – the polarity of the connection is shown on the front panel of the reader.

Set the Power Range Setting wire bridge to match your input voltage.

(Default setting pin 2+3 connected – input power 18 – 24V, operating temperature range

–20°C to +70°C)

We recommend to use a linear power supply. If this is not possible and you wish to use a

switched mode power supply, DO NOT use one that operates below 200kHz.

(Switched mode power supplies that operate below 200kHz might interfere with

transponder signals and thus reduce the reading range.)

http://www.ti-rfid.com

The default switch settings for “CTL Setup”, “Synchronization” and “RS422/RS485/DAT”

are shown in the figure above.

In order to gain access to the fuse and connectors J, H and I, please remove the upper

and lower plastic cover strips. (remove the four screws holding the front panel)

A – Power Supply Connector

B – General Purpose I/O

C – Synchronization Interface

D – Carrier Phase

Synchronization Interface

E – Open Collector & I/Os

F1 & F2 – RS232 Interface

G – RS422/485 Interface

H – Indicator Outputs

I – Antenna Connector

J – Power Range Setting

Connectors

Getting Started

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2 11-06-22-095 07/01

Default Configuration

CTL Setup switch 8 is in the OFF position; standard TIRIS default parameters are used.

These are:

- Hardware interface RS232C, ASCII Protocol

- 9600 baud, eight data bits, no parity, one stop bit, Xon/Xoff enabled

- Normal Mode, Wireless synchronization

- I/O 0 to 3 defined as input, I/O 4 to 7 defined as output and logic high

Antenna

The Reader S251B can be used together with an antenna which applies to the following

specifications:

Parameter Minimum Maximum

Antenna Resonance Voltage - 380 Vpeak

Antenna Inductance 26µH 27.9µH

Antenna Q-factor 40 350

Operating Conditions

Exceeding any of the recommended operating conditions (especially supply voltage,

supply current, operating temperature and antenna resonance voltage) may cause

permanent damage to the Reader.

The Reader itself generates heat. Therefore - if incorporated into a housing - you must

ensure (by proper design or cooling) that the temperature directly surrounding the

reader does not exceed the operating temperature range.

Warning

Always ensure that the reader is switched off when making or breaking connections to it.

Care must be taken when handling the reader. High voltage across the antenna

terminals could be harmful to your health. If the antenna insulation is damaged, the

antenna should not be connected to the reader.

Regulatory Notes

Prior to operating the RF-Module together with antenna(s), power supply and a control

module or other devices, the required FCC or relevant government agency (CE)

approvals must be obtained. Sale, lease or operation in some countries may be subject

to prior approval by government or other organizations. It is the responsibility of the

system integrators to get their complete system tested and to obtain approvals from the

appropriate local authorities before operating or selling this system.

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3 11-06-22-095 07/01

FCC Notices (U.S.A)

A typical system configuration containing the RF-Module has been tested and found to

comply with the limits for a Class A digital device, pursuant to part 15 of the FCC rules.

Modification to this device shall not be made without the written consent of Texas

Instruments Inc. Unauthorized modifications may void the authority granted under

Federal Communications Commission Rules permitting the operation of this device.

CE Conformity (Europe)

A CE Declaration of Conformity is available for the RFM at TI*RFID Sales Offices.

The equipment complies with the essential requirements of the Telecommunication

Terminal Equipment Act (FTEG) and the R&TTE Directive 99/5/EC when used for its

intended purpose.

Any device or system incorporating this module in any other than the originally tested

configuration needs to be verified against the requirements of the Telecommunication

Terminal Equipment Act (FTEG) and the R&TTE Directive 99/5/EC. A separate

Declaration of Conformity must be issued by the system integrator or user of such a

system prior to marketing it and operating it in the European Community.

It is the responsibility of the system integrators to get their complete system tested and

obtain approvals from the appropriate local authorities before operating or selling the

system.

FCC ID: A92S251B

This device complies with Part 15 of the FCC

Rules. Operation is subject to the following two

conditions: (1) this device may not cause

harmful interference, and (2) this device mus

accept any interference received, including

interference that may cause undesired

operation.

Texas Instruments reserves the right to change its products and services at any time without notice. TI provides customer assistance in various

technical areas, but does not have full access to data concerning the uses and applications of customers products. Therefore, TI assumes no

responsibility for customer product design or for infringement of patents and/or the rights of third parties, which may result from assistance

provided by TI.

Description

The Series 2000 Reader S251B provides all RF and

Control Functions to communicate with 134.2 kHz

HDX/FSK transponders. It sends an energizing signal

to the transponder, modulates the RF signal to send

data to the transponder, decodes and checks the received transponder data and transmits it via a

standard serial interface (RS232, RS422/485). The reader includes a Dynamic Auto Tuning (DAT)

function that automatically tunes a standard antenna to resonance and keeps it tuned during operation.

Specifications:

RI-STU-251B

Operating Temperature -20 to +70°C (depending on power consumption)

Storage Temperature -40 to +85°C

Relative Humidity <97% non-condensing, IEC 68-2-30 Test Db, 21 cycles

RF Transmit Frequency 134.2 kHz

Power Supply 10 to 24 Vdc, regulated

Memory 64 kByte EPROM for Firmware

1kBit EEPROM for Configuration

32 kByte RAM for Data

Data Storage 909 ID Codes (each 64bit)

Communications Interface RS232, RS422/485

System Architecture Point-to-point and point-to-multipoint

Communications Parameters 600 - 57600 baud, 7/8 data bits, even/odd parity

Communications Protocol ASCII with Xon/Xoff handshake, TIRIS Bus Protocol

Inputs/Outputs 8 configurable digital I/Os, 2 open collector outputs

Antenna Tuning Range 26 to 27.9 µH (Dynamic Auto Tuning)

Antenna Resonance Voltage Max. 380 Vpeak

Transponder Types 134.2 kHz HDX/FSK

Dimensions (L*W*H) (200 mm x 120mm x 120 mm) ±1.5 mm

Weight 900 grams

Mounting DIN rail TS35

For more information, contact the sales office or distributor nearest you. This contact information can be found

on our web site at: http://www.ti-rfid.com

Data Shee

Series 2000 Reader S251B

RADIO FREQUENCY IDENTIFICATION SYSTEMS

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