Texas Instruments S251B User Manual

April ’00 Preface

FCC ID: A92S251B

Series 2000 Reader System

Reader S251B RI-STU-251B

Reference Guide

11-06-21-054 April 2000

1

S2510 Reader - Reference Guide April ’00

Edition One - April 2000

This is the first edition of this manual, it describes the following equipment:

TIRIS Reader S251B

Texas Instruments (TI) reserves the right to make changes to its products or services
or to discontinue any p roduc t o r se rvi ce at a ny ti me with out not ic e. T I prov id es cu s­tomer assistance i n various technic al areas, but do es not have full ac cess to data
concerning the use and applications of customer's products.

Therefore, TI assumes no liability and is not responsible for customer applications or
product or software design or performance relating to systems or applications incor­porating TI produ cts. In addi tion, TI assu mes no liab ility and i s not respons ible for
infringement of patents and/or any other intell ectual or industrial proper ty rights of
third parties, which may result from assistance provided by TI.

TI products are not designed, intended, authorized or warranted to be suitable for life
support applications or a ny othe r li fe cr iti ca l appl ic ati on s wh ic h cou ld inv ol v e po ten­tial risk of death, personal injury or severe property or environmental damage.

RI-STU-251B

The
Incorporated.

Copyright  2000 Texas Instruments Incorporated (TI)
This document may be downloaded onto a computer, stored and duplicated as nec-

essary to support the us e of the related TI products. Any othe r type of duplicatio n,
circulation or storage on data carriers in any manner not authorized by TI represents
a violation of the applicable copyright laws and shall be prosecuted.

logo and the word

TIRIS

TIRIS

2

are registered trademarks of Texas Instruments

About This Guide

Conventions

PREFACE

Read This First

This manual describes t he TIRIS S251B Reader, its goal is to describe the reader ,
how it works, how to install it and how to use it.

Regulatory, safety and warranty notices that must be followed are given in
Chapter 5.

WARNING:

WARNING IS USED WHERE CARE MUST BE TAKEN, OR A CERTAIN

A

PROCEDURE

HARM TO YOUR HEALTH

OR

MUST BE FOLLOWED IN ORDER TO PREVENT INJURY

.

If You Need Assistance

Application Centers are located in Europe, North and S outh Amer ica, the Far E ast
and Australia to provide direct su pport. For more information, please contact your
nearest TIRIS Sales and Application Center. The contact addresses can be found on
our home page:

CAUTION:

This indicates information on conditions which must be
met, or a procedure which must be followed, which if not
heeded could cause permanent damage to the equipment
or software.

Note:

Indicates conditions which must be met, or procedures which must be
followed, to ensure proper functioning of the equipment or software.

Information:

Indicates information which makes usage of the equipment or soft­ware easier

http://www.tiris.com

3

S2510 Reader - Reference Guide April ’00

Document Overview

Page

Chapter 1: Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.1 General............................................................................................... 7

1.2 System Description ............................................................................ 7

1.3 Product Description....................................... ...... ....... ...... ....... ........... 7

Chapter 2: Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.1 General............................................................................................. 10

2.2 Product Description....................................... ...... ....... ...... ....... ......... 10

2.3 Mechanical Information.................................................................... 22

Chapter 3: Synchronization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

3.1 Introduction....................................................................................... 24

3.2 Types of Synchronization................................................................. 24

Chapter 4: Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

4.1 Introduction....................................................................................... 30

4.2 General............................................................................................. 30

4.3 Mechanical Mounting ....................................................................... 30

4.4 Communication ................................................................................ 31

4.5 Synchronization................................................................................ 34

4.6 General Purpose Input/Outputs........................................................ 38

4.7 LED Outputs........... ....... ...... ...... ....... ...... ....... ...... ....... ...... ................ 39

4.8 Reset................................................................................................ 39

4.9 Antenna............................................................................................ 40

4.10 RF Power Output Adjustment........................................................... 40

Chapter 5: Warnings, Cautions and Notices . . . . . . . . . . . . . . . . . . . . . . . . . . 41

List of Figures

Figure 1: S251B Reader ................................................................................ 7

Figure 2: S251B Front Panel (with connector covers removed) .................. 10

Figure 3: S251B Connector Locations ......................................................... 11

Figure 4: CTL Setup Switches ..................................................................... 20

Figure 5: RS422/RS485/DAT Switches ....................................................... 21

Figure 6: Synchronization DIP Switches...................................................... 21

Figure 7: Distance between Antennas (top view)......................................... 28

Figure 8: Switch Settings for RS422 ............................................................ 33

Figure 9: Switch Settings for RS485 ............................................................ 33

Figure 10: Wired & Combined Wireless/Wired Sync. Interface Connection 34

Figure 11: Master/Slave Sync. Interface Connection (without Ack.)............ 35

Figure 12: Master/Slave Synchronization Interface Connection .................. 36

Figure 13: Carrier Phase Synchronisation Interface Connection................. 37

Figure 14: Connecting the LED Outputs ...................................................... 39

Figure 15: RESET Push-button Wiring ........................................................ 39

Page

4

April ’00 Preface

List of Tables

Table 1: List of Connectors .......................................................................... 11

Table 2: Power Range Settings ................................................................... 12

Table 3: Supply Connector........................................................................... 12

Table 4: Supply Connector - Specifications ................................................. 13

Table 5: General Purpose Inputs/Outputs.................................................... 13

Table 6: General Purpose Inputs/Outputs - Specifications .......................... 14

Table 7: Synchronization Interface............................................................... 14

Table 8: Synchronization Interface - Specifications ..................................... 14

Table 9: Carrier Phase Synchronization Interface ....................................... 15

Table 10: CPS Interface - Specifications ..................................................... 15

Table 11: Open Collector & I/Os .................................................................. 16

Table 12: Open Collector & I/Os - Specifications......................................... 16

Table 13: RS232 SUB-D Connector ............................................................ 17

Table 14: RS232 WECO Connector ............................................................ 17

Table 15: RS422/RS485 Connector............................................................. 18

Table 16: RS422/RS485 Communications Interface - Specifications.......... 18

Table 17: Indicator Outputs.......................................................................... 19

Table 18: Indicator Outputs - Specifications ................................................ 19

Table 19: Antenna........................................................................................ 19

Table 20: Antenna - Specifications .............................................................. 19

Table 21: CTL Setup DIP Switches.............................................................. 20

Table 22: I/O Setting Switches (6 & 7)......................................................... 20

Table 23: RS422/RS485/DAT Settings DIP Switches.................................. 21

Table 24: Synchronization DIP Switches ..................................................... 21

Table 25: Indicators...................................................................................... 22

Table 26: Mechanical Information................................................................ 22

Table 27: Distances Between Antennas ...................................................... 28

Table 28: RS232 9-pin Connector................................................................ 31

Table 29: RS232 WECO Connector ............................................................ 32

Table 30: RS422/RS485 Connector............................................................. 33

Table 31: Wired and Combined Wireless/Wired Synchronization................ 34

Table 32: Master/Slave Synchronization Without Acknowledgement .......... 35

Table 33: Triggered Synchronization ........................................................... 35

Table 34: Master/Slave Synchronization With Acknowledgement............... 36

Table 35: General Purpose Inputs/Outputs.................................................. 38

Table 36: Antenna Specifications................................................................. 40

Page

5

Chapter 1: Introduction

This introduces you to the S251B Reader, what it is and what it does.

Topic Page

1.1 General..........................................................................................................7

1.2 System Description............ ....... ...... ...... ....... ...... ....... ...... ....... ...... ....... .........7

1.3 Product Description.....................................................................................7

1.3.1 Interfaces ...............................................................................................8

1.3.2 Communications Protocols ....................................................................8

CHAPTER 1

Introduction

6

April ’00 Chapter 1. Introduction

1.1 General

This document provides information about the S251B Reader. It describes the reader
and how to install it.

1.2 System De scription

A TIRIS system co mprises a reader connected to a control device (us ually a host
computer) via an RS2 32, or an RS422/RS485 interface, an antenna and a trans­ponder. It is used for wireless identification of TIRIS LF transponders.

The reader sends a 134.2 kHz power pulse to a transponder, the energy of the gen­erated magnetic field is stored in the capacitor in the transponder and when the pow­er pulse has finished the transponder immediately sends its data back to the reader.

1.3 Product Description

The Reader is an integral part of a TIRIS system, it provides all of the RF and control
functions required to communicate with TIRIS LF transponders.

The main task of the Reader is to send a power pulse via the antenna to initialize the
transponder, to demodulate the received identification signal and then send the data
to a control device. It is also used to send programming data to Read/Write and Mul­tipage transponders.

The Reader is housed in an IP20 Polycarbonate box as shown Figure 1.

Figure 1: S251B Reader

If connected via an RS232 or an RS422 /RS485 inter face the comp uter send s com­mands to the reader using one of the two protocols used by the system (ASCII or TI­RIS Bus Protocol), and the reader then communicates via its antenna with any
transponders within tha t antenna’s range . The antenna can be mou nted up to 5 m
(depending on the antenna) away from the reader.

7

S2510 Reader - Reference Guide April ’00

1.3.1 Interfaces

The reader has the following connections/interfaces:

• Communications interface: RS232, RS422 or RS485 (F & G)

• 8 general purpose I/O lines (B)

• 2 Open Collector outputs (E)

• Synchronization bus (C)

• Carrier Phase Synchronization bus (D)

• Power connector (A)

• Indicator outputs connector (H)

• Antenna connector (I)

1.3.2 Communications Protocols

There are two protocols that can be used with the S251B Reader, they are:

ASCII Protocol.

TIRIS Bus Protocol.

If you are using on e r ea der p er c ontr ol ling dev i ce yo u m ay ch oose the protocol that
best suits your requirements. However, if you have more than one reader connected
to a bus running under a contr ol ling dev i ce then yo u mus t us e the T IRIS Bus Pr oto­col.

For details regarding th ese communicatio ns protocols, please refer to the relevant
manual (11-06-21-037 for the ASCII Proto col, 11-06-21- 053 for the TBP) , available
at the TIRIS home page:

This is a simple protocol that you can use to send ASCII charac­ter commands to the reader. It is possible to use a standard termi­nal emulator program to send ASCII commands. The ASCII
protocol can only be used with RS232 or RS422.

This is a bina ry protocol suitable for c ommunication be­tween a controllin g device (for example: a PC) a nd one or mor e
readers. For exampl e with a sing le reader u sing an RS23 2 inter­face or up to 31 readers using RS422/485. The TIRIS Bus protocol
can be used with RS232 or RS422/485.

http://www.tiris.com

8

Chapter 2:Hardware

This chapter describes the hardware of the S251B Reader. It tells you which modules
together comprise the reader. It also describes the front panel (switches connections
etc.) and specifies the electrical inputs and outputs.

Topic Page

2.1 General........................................................................................................10

2.2 Product Description...................................................................................10

2.3 Mechanical Information.............................................................................22

CHAPTER 2

Hardware

2.2.1 Connectors...........................................................................................11

2.2.1.1 A - Supply Connector..................................................................12

2.2.1.2 B - General Purpose Inputs/Outputs...........................................13

2.2.1.3 C - Synchronization Interface .....................................................14

2.2.1.4 D - Carrier Phase Synchronization Interface ..............................15

2.2.1.5 E - Open Collector & I/Os...........................................................16

2.2.1.6 F1 & F2 - RS232 Communication Interface................................17

2.2.1.7 G - RS422/RS485 Communications Interface............................18

2.2.1.8 H - Indicator Outputs...................................................................19

2.2.1.9 I - Antenna Connector.................................................................19

2.2.2 Switches...............................................................................................20

2.2.3 Indicators..............................................................................................22

2.2.4 Potentiometers.....................................................................................22

2.2.4.1 RF Power Adjustment.................................................................22

2.2.4.2 EMI / Sync. Level Adjustment.....................................................22

9

S2510 Reader - Reference Guide April ’00

2.1 General

This chapter describes the hardware comprising the S251B Reader and provides the
electrical specifications.

2.2 Product Description

The S251B Reader is contained in a IP20 polycarbonate box that enables easy inte­gration into standard racks and cabinets.

The reader is shown in Figure 1 and the front panel is shown in Figure 2.

Figure 2: S251B Front Panel (with connector covers removed)

The reader comprises two mod ules assemb led toget her in a hou sing. The modules
are:

Control Module

Radio Frequency Module

which contains all th e cir cu itry requi r ed to co mmu ni cat e v ia th e
interface to the computer and external de vices, to provide syn­chronization, and to control the RFM. It includes a

Tuning

nance.

RIS reading unit that a re nee ded to initia lize a TIRIS transpon der
and to detect its return signal.

(DAT) function to autom aticall y tune th e antenn a to reso-

(RFM) which contains all the analog functions of a TI-

10

Dynamic Auto

April ’00 Chapter 2. Hardware

2.2.1 Connectors

There are 10 connectors on the S251B, 7 WECO connectors, the antenna connector,
a 9-pin sub-D RS232 connector, a 6-pin connector for the indicator outputs and a 2­pin connector for the anten na. The function of e ach pin on each con nector (except
the RS232 sub-D connector) is described in the following paragraphs. Their location
is shown in Figure 3.

Figure 3

A

12

+ -

Power Fuse

123

On

Reader S251B

O.C. - I/O

16

E F1 H

In order to gain access to the fuse and co nnec to r J you mu st fi rst re mov e the upper
two screws holding the front panel on, remove the plastic cover strip and then replace
the two screws. To gain access to the connectors H and I you must first remove the
lower two screws holding the front panel on, remove the plastic cover strip and then
replace the two screws.

:

S251B Connector Locations

J

1

General Purpose Inpu t / Ou tp u t

Power Range Setting

CTL Setup

On On

1 1

B

EMI
TX Active
Read O.K.

RS232

16

F2

15

16

Synchronization

On

1

RF Power Output Adj.

EMI / Sync. Level Adj.

L

!

O.K.

L

RS422 / 485

16

Antenna
Tuning

"

16

RS422
RS485

DAT

G

C

D

Antenna

1

I

2

The pins are not individually numbered on the connectors themselves (just on Figure
3 for your convenience).

The connectors are all marked on Figure 3 with a letter (from A to I) and are listed in
Table 1 which also shows the section that describes them

Table 1: List of Connectors

Identifying Letter Function Section

A Supply Connector 2.2.1.1
B General Purpose Inputs/Outputs 2.2.1.2

C Synchronization Interface 2.2.1.3

D

Carrier Phase Synchronization

Interface

2.2.1.4

E Open Collector Inputs/Output s 2.2.1.5

F1 RS232 Connector (9-pin SEB-D) 2.2.1.6

11

S2510 Reader - Reference Guide April ’00

Table 1: List of Connectors

Identifying Letter Function Section

F2 RS232 Connector 2.2.1.6

G RS422/RS485 Connector 2.2.1.7
H Indicator Outputs 2.2.1.8

I Antenna Connector 2.2.1.9

2.2.1.1 A - Supply Connector

The Reader requires a single DC supply voltage (10 to 24 V) through a 2-pin connec­tor marked with + for positive and – for negative

The Power Range Setting wired jumpers (marked J in Figure 3) and the actual power
supply have a dir ect consequence on the operating temperature of the reader as
shown in Table 2.

Table 2: Power Range Settings

Setting Input Power Operating Temperature Range

Pins 1 + 2 connected 10 - 15 V -20º to +70º C

“ 15 - 24 V

Pins 2 + 3 connected 18 - 24 V -20º to +70º C

(max. I_VSP = 0.9 A

-20º to +70º C
see caution 1).

peak

CAUTION:

1. In order to operate the reader over t he full temperature range
with pins 1 + 2 connected (15 to 24 V), the maximum current
consumption must not exceed 0.9 A

. Exceeding this

peak

value could result in unreliable functio ning of the dynamic
auto tuning, or sharp limitation of the transmitter output
power because of internal protection. If either of these should
occur, switch the device off and allow it time to recover; and
then when it is switched on again it will revert t o normal oper­ation. Note that if either of these occur it is an indication that
the reader is not being operated within its specifications.

2. The reader itself generates heat, t herefore if it is incor porated
into a housing you must ensure (by proper design and/or
cooling) that the temperature immediately surrounding the
reader does not exceed the operating temperature range.

1..

Table 3: Supply Connector

Pin Signal Description Direction

1 + Positive supply input
2 - Ground input

12

April ’00 Chapter 2. Hardware

Table 4: Supply Connector - Specifications

Parameter Minimum Maximum

Logic Supply Voltage VSL 10 V 24 V

Logic Supply current ISL - 2.5 A

2.2.1.2 B - General Purpose Inputs/Outputs

The Reader has ei ght general purpose TTL-Level Inputs/O utputs. By m eans of th e
configuration set-up, they can be set in groups of four to be Input or Output. Further­more, there is a reset connection and a 5 V regulated output.

The pin assignment is given in Table 5 and their specifications are given in Table 6.

Table 5: General Purpose Inputs/Outputs

Pin Signal Description Direction

1 GP IO 7 General Purpose I/O 7 Input/Output
2 GP IO 6 General Purpose I/O 6 Input/Output
3 GP IO 5 General Purpose I/O 5 Input/Output
4 GP IO 4 General Purpose I/O 4 Input/Output
5 GP IO 3 General Purpose I/O 3 Input/Output
6 GP IO 2 General Purpose I/O 2 Input/Output
7 GP IO 1 General Purpose I/O 1 Input/Output
8 GP IO 0 General Purpose I/O 0 Input/Output

9 - not connected ­10 IN1 Input 1 Input
11 IN0 Input 0 Input
12 RESET- Reset Input

13 VCC

14 GND Signal Ground ­15 GND Signal Ground -

Regulated 5 Volt dc Supply

(see note)

Output

CAUTION:

Do not connect any power supply to pin 13 as it would
damage the reader .

The total consumption of the two VCC outputs (General
Purpose Inputs/Outputs pin 13 together with Open Collec­tor & I/Os - pin 1) must not exceed 500 mA.

13