Tag sys Medio S001 Assembly Instructions

Medio S001/S002 Reader
Integrator's Guide
Revision 1.4
TAGSYS
September 2003

Medio S001/S002 Reader Integrator's Guide
Publishing Information
Disclaimer and Limitation of Liability
All information herein is either public information or is the property of and owned solely by TAGSYS who shall have and
keep the sole right to file patent applications or any other kind of intellectual property protection in connection with such
information.
Nothing herein shall be construed as implying or granting to you any rights, by license, grant or otherwise, under any
intellectual and/or industrial property rights of or concerning any of TAGSYS’ information.
This document can be used for informational, non-commercial, internal and personal use only provided that:
 the copyright notice below, the confidentiality and proprietary legend and this full warning notice appear in all copies.
 this document shall not be posted on any network computer or broadcast in any media and no modification of any
part of this document shall be made.
Use for any other purpose is expressly prohibited and may result in severe civil and criminal liabilities.
The information contained in this document is provided “AS IS” without any warranty of any kind. Unless otherwise
expressly agreed in writing, TAGSYS makes no warranty as to the value or accuracy of information contained herein.
The document could include technical inaccuracies or typographical errors. Changes are periodically added to the
information herein. Furthermore, TAGSYS reserves the right to make any change or improvement in the specifications
data, information, and the like described herein, at any time.
Therefore TAGSYS assumes no liability and is not responsible for customer applications or product or software which
include TAGSYS products.
TAGSYS HEREBY DISCLAIMS ALL WARRANTIES AND CONDITIONS WITH REGARD TO THE INFORMATION
CONTAINED HEREIN, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT SHALL TAGSYS BE LIABLE, WHETHER
IN CONTRACT, TORT OR OTHERWISE, FOR ANY INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES OR ANY
DAMAGES WHATSOEVER INCLUDING BUT NOT LIMITED TO DAMAGES RESULTING FROM LOSS OF USE,
DATA, PROFITS, REVENUES, OR CUSTOMERS, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF INFORMATION CONTAINED IN THIS DOCUMENT.
TAGSYS does not and shall not warrant that this product/system/equipment will be resistant to all possible attacks, and
shall not incur, and disclaims, any liability in this respect. Even if each product is compliant with current security
standards in force on the date of their design, security mechanisms' resistance necessarily evolves according to the
state-of-the-art in security and notably under the emergence of new attacks. Under no circumstances shall TAGSYS be
held liable for any third party actions, and in particular in case of any successful attack against systems or equipment
incorporating TAGSYS products.
TAGSYS disclaims any liability with respect to security for direct, indirect, incidental or consequential damages that result
from any use of its products. It is further stressed that independent testing and verification by the person using the
product is particularly encouraged, especially in any application in which defective, incorrect, or insecure functioning
could result in damage to persons or property, denial of service, or loss of privacy.
© 2000-2003 TAGSYS. All rights reserved.
Microsoft, Visual C++, Windows, and Windows NT are either registered trademarks or trademarks of Microsoft
Corporation in the U.S.A. and/or other countries.
I-Code is a registered trademark of Philips.
Tag-It is a registered trademark of Texas Instruments.
Printed in France.
TAGSYS – 180 Chemin de St Lambert, 13821 LA PENNE SUR HUVEAUNE, France.
Tel: [phone] / Fax: [phone]
Document Reference: 10969A1
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Read This First
Welcome to the TAGSYS range of products operating at the 13.56 MHz frequency. This range of
products is used to implement high-quality RFID systems for demanding applications.
This document provides information about how to install and use Universal Short Range Medio
S001/S002 Smart Label Readers.
Audience
This document requires familiarity with RFID technology. It is intended for people in charge of
installing and using the product.
Conventions
Symbol Meaning
CAUTION: A note that advises users that a specific action could result in the loss of data or
damage the hardware.
WARNING: A note that advises users that a specific action may result in physical harm.
A note that provides additional information that helps the user perform a task or obtain the
best performance from the product.
Abbreviations and Acronyms
AFI Application Family Identifier
AON All Or None
API Application Programming Interface
ASK Amplitude Shift Keying
CPU Central Processing Unit
CRC Cyclic Redundancy Check
DLL Dynamic-Link Library
DPU Digital Processing Unit
DSFID Data Storage Format Identifier
DSP Digital Signal Processor
EAS Electronic Article Surveillance
ETX End of Text
HPI Host Port Interface
I/O Input/Output
IFD Interface Device
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Medio S001/S002 Reader Integrator's Guide
LED Light Emitting Diode
LSB Least Significant Bit
MSB Most Significant Bit
OS Operating System
PC Personal Computer
PCB Printed Circuit Board
RAM Random Access Memory
RF Radio Frequency
RFID Radio Frequency IDentification
RFU Reserved for Future Use
RPU Radio Processing Unit
RTC Real Time Clock
RTF Reader Talks First
SAM Security Access Module
STX Start of Text
TTF Tag Talks First
TTL Transistor-Transistor Logic
TTY TeleTYpe
UID Unique Identifier
Glossary
Anti-Collision Tag capability making it readable while other tags are present in the RF field.
Antenna An aerial that receives and/or transmits radio frequency signals. Aerials are
manufactured in a variety of forms, shapes and sizes.
Baud A unit of measure of data transmission speed representing the number of signal changes per
second.
BNC Connector Cylindrical metal connector with a copper core that is located at the tip of a
coaxial cable, and is used to connect cables together. It attaches by pushing and twisting the outer
cylinder on to two locking pins.
Coupler See Reader.
Data Storage Format Identifier Identifies the structure of the data stored in the smart label.
Digital Signal Processor This part of the Radio Processing Unit (RPU) performs real-time smart
label decoding and manages the Medio L200 configuration.
Dynamic-Link Library Executable routines that are stored as separate files with DLL extensions
and executed only when needed by the program.
Host Port Interface Interface used to access the DSP memory.
IEC Connector Three-pin connector used on sockets that carry mains electricity to the computer.
All PCs use a male IEC connector and mains lead with a female IEC connector.
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Read This First
Interrogation Pulse A signal transmitted by the coupler to activate the smart label’s transponder.
Monitoring Port Parallel Port granting access to the HPI. It communicates directly with the Radio
Processing Unit
Multi-Read See Anti-Collision
Nibble Half a byte (4 bits)
Packaged Reader A reader in its casing.
Phase Shift Difference of phase between the 13.56 MHz field emitted by two antennas. This
feature is dedicated to rotating field applications and three-dimensional volume smart label
detection.
Protocol A set of rules governing a particular function, such as the flow of data/information in a
communication system (communication between a smart label and a reader or a reader and a PC
or host computer).
Radio Frequency Identification System (RFID) An automatic identification and data capture
system comprising one or more readers and one or more smart labels in which data transfer is
achieved by means of suitable modulated inductive or radiating electromagnetic carriers.
Radio Processing Unit This unit controls the main features of the Medio L200, such as the RF
channels, the multiplexer and the smart label decoding.
Reader Electronic system for the communication between smart labels and host computers.
Reader Talks First Chip protocol for exchanges between the reader and the chip, whereby the
chip waits for a command from the reader to which it responds.
RS-232 Electronic Industries Association (EIA) standard for serial interfaces between computers
and peripherals which defines the function, the electrical characteristics and the timing of signals.
RS-485 Electronic Industries Association (EIA) standard for multipoint, differential data
transmission. It allows multiple nodes to communicate bi-directionally over 1 or 2 twisted pairs.
Smart Label Small, flexible tag from the 13.56 MHz TAGSYS product line. A smart label is made
of a chip connected to an etched antenna.
Tag See Smart Label.
Tag Talks First Chip protocol for exchanges between the reader and the chip, whereby the tag
sends information continuously, without waiting for a specific command from the reader.
Transceiver A combined transmitter and receiver.
Transponder A combined receiver/transmitter that automatically transmits a signal when a ‘trigger’
is received by it. The trigger is often a pulse, called an interrogation pulse.
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Medio S001/S002 Reader Integrator's Guide
If you need assistance
Please contact your nearest TAGSYS sales representative or the TAGSYS welcome desk at:
Telephone: [phone]
Fax: [phone]
E-Mail: [email protected]
Contact for Comments
We welcome your feedback to help us provide high quality documentation.
For technical comments, please contact our welcome desk:
Telephone: [phone]
Fax: [phone]
E-Mail: [email protected]
Please remember to quote the Document Reference Number 10969A1, your job title and your
company.
Quality Issues
TAGSYS implements stringent quality controls at all stages of its manufacturing process. However,
should you find a defect with this product, please notify your TagSys Quality Service representative
using the dedicated Product Return Form.
Telephone: [phone]
Fax: [phone]
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Read This First
Table of Contents
Publishing Information 2
Disclaimer and Limitation of Liability 2
Read This First 3
Audience 3
Conventions 3
Abbreviations and Acronyms 3
Glossary 4
If you need assistance 6
Contact for Comments 6
Quality Issues 6
1Certification 10
1.1 Occupational Health and Safety Notices 10
1.2 Regulatory Notices 10
1.2.1 In Europe (CE and RTTE Directives) 10
1.2.2 In USA (FCC Directive) 11
1.2.3 In Canada 11
2Introduction 12
2.1 General 12
2.2 Product Description 12
2.3 Medio S001/S002 Key Features 13
2.4 Delivery 13
3Functional Overview 14
3.1 Functional Block Diagram 14
3.2 Communication Protocols 15
3.2.1 Tag-to-Reader Interface 15
3.2.2 Reader-to-Host Interface 15
3.3 Signal Detection Module 16
3.4 Peripheral Devices 17
3.5 Automatic Features 17
3.5.1 Baud Rate Recognition 17
3.5.2 RF Management 17
4Installing the Reader 18
4.1 Pin Connections 18
4.2 Power Supply and Hardware Shutdown 19
4.3 Antenna 20
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Medio S001/S002 Reader Integrator's Guide
5Serial Communication Links 21
5.1 Medio S001 and S001 Rev. 2 21
5.2 Medio S002 21
5.3 General Information on Data Acquisition 21
5.4 TTL Interface 22
5.4.1 Installing the TTL Interface 22
5.4.2 Electrical Signal Requirements 23
5.5 RS-232 Interface 23
5.5.1 Installing the RS-232 Interface 23
5.5.2 Setting the Host System RS-232 Communication Link 24
5.5.3 Electrical Signal Requirements 25
5.6 RS-422 / RS-485 Interface (Medio S002 Only) 25
5.6.1 Installing the RS-422 Interface 25
5.6.2 Installing the RS-485 Full Duplex Interface 26
5.6.3 Installing the RS-485 Half Duplex Interface 27
5.6.4 Grounding Arrangement 27
5.6.5 Electrical Signal Requirements 28
6Connecting Peripheral Devices 29
6.1 Using the Input / Output Pins (I/Os) 29
6.2 Connecting an LED or a Buzzer to an Output 30
6.3 I/O Electrical Signal Requirements 31
6.4 Reserved Pins 31
7Stand-alone Mode 32
7.1 Stand-alone Mode Features 32
Customized Tag Type Reading 32
Serial Communication Type 33
Customized ASCII Message Format 33
Repetition Option 34
Trigger Input (Medio S002 and S001 Rev. 2) 34
Read LED Settings (Medio S002and S001 Rev. 2) 34
7.2 Enabling Stand-alone Mode 35
7.2.1 Medio S001 35
7.2.2 Medio S002 and S001 Rev. 2 35
7.2.3 All Readers 35
7.3 Stand-alone Mode Settings 37
7.3.1 Medio S001 37
7.3.2 Medio S002 and S001 Rev. 2 38
7.4 Disabling Stand-alone Mode 38
7.4.1 Medio S001 38
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7.4.2 Medio S002 and S001 Rev. 2 38
8Technical Specifications 40
8.1 Medio S001/S002 Technical Specifications 40
9Mechanical Characteristics 41
9.1 Dimensions and General Mechanical Information 41
9.2 Markings 42
10 Electrical Characteristics 43
10.1 Absolute Maximum Ratings 43
10.2 Standards Compliance 43
10.3 Power Supply DC Characteristics 44
10.4 SHDW Pin Electrical Characteristics 45
10.5 Communication Link DC Characteristics and Timing 45
10.6 Antenna Electrical and Timing Characteristics 46
10.7 I/O Electrical and Timing Characteristics 47
11 Warranty Conditions 48
11.1 Warranty 48
11.2 Warranty Exclusions 48
11.2.1 General Provisions 49
11.2.2 How to Return Defective Products 49
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Medio S001/S002 Reader Integrator's Guide
1 Certification
1.1 Occupational Health and Safety Notices
TAGSYS Products have been designed not to exceed the limits given in the European Standard
EN 50364 “Limitation of human exposure to electromagnetic fields from devices used in Electronic
Article Surveillance (EAS), Radio Frequency Identification (RFID) and similar applications” in
conjunction with the European Standard EN 50357 describing how to evaluate the exposure level.
It is the responsibility of the TAGSYS Partner to install the Medio S001/S002 Smart Label Reader
as described in TAGSYS Product Manuals or TAGSYS Documentation and with the appropriate
antennas.
Modification of any TAGSYS System is prohibited without the written consent of TAGSYS.
Unauthorized modifications may void the conformity of the equipment to safety standards and will
void the TAGSYS warranty.
An RF fields survey has been carried out on all the System components, in accordance with
AS/NZS 2771.1: Radio Frequency Radiation, Part 1. According to this standard the maximum
allowable RF exposure levels (non-occupational) at 3 kHz to 300 GHz are 200 µW/cm2.
1.2 Regulatory Notices
An RFID system typically composed of an RF emission device such as the Medio S001/S002 is
subject to national regulations that may differ by country.
One important item to consider is the maximum permissible magnetic field intensity at a distance of
10 meters from the antenna that must not exceed 42 dBµA/m in Europe and 38 dBµA/m in US.
The Medio S001/S002 Smart Label Reader meets these limits.
It is the responsibility of the TAGSYS Partner to install the Medio S001/S002 Smart label
Reader as described in this Integrator’s Guide or in TAGSYS Documentation.
1.2.1 In Europe (CE and RTTE Directives)
The Medio S001/S002 Smart Label Reader complies (CE Declaration of Conformity granted) with
the European EMC directive.
The Medio S001/S002 complies with the requirements of the Telecommunication Terminal
Equipment Act (FTEG) and the RTTE Directive 1995/5/EC.
Any modification of the Medio S001/S002 Smart Label Reader is prohibited without the written
consent of TAGSYS. Unauthorized modifications may void the conformity of the equipment to CE
and RTTE Directives and will void the TAGSYS warranty.
If a Medio S001/S002 is further integrated in a different product, it is the responsibility of the
manufacturer of this complementary product to obtain the required approvals for this product.
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Certification
1.2.2 In USA (FCC Directive)
The Medio S001/S002 Smart Label Reader has been designed to comply with Part 15 of the FCC
Rules. Furthermore typical configurations based on a Medio S002 have been successfully tested
with Part 15 of the FCC rules.
Medio S001/S002 Smart Label Reader
WARNING TO USERS IN THE UNITED STATES
FEDERAL COMMUNCIATIONS COMMISSION (FCC) RADIO
INTERFERENCE STATEMENT 47 CFR Section 15.105(b)
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses and can
radiate radio frequency energy and if not installed and used in accordance with the instructions
may cause harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one or more of the following
measures:
▪Reorient or relocate the receiving antenna.
▪Increase the separation between the equipment and receiver.
▪Connect the equipment into an outlet on a circuit different to that to which the receiver is
connected.
▪Consult the dealer or an experienced radio/TV technician for help.
NO UNAUTHORIZED MODIFICATIONS
47 CFR Section 15.21
CAUTION: This equipment may not be modified, altered, or changed in any way without signed
written permission from TAGSYS SA. Unauthorized modification may void the equipment
authorization from the FCC and will void the TAGSYS warranty.
ANTENNA REQUIREMENT
47 CFR Section 15.203
CAUTION: This equipment must be professionally installed. The installer shall be responsible for
ensuring that the proper antenna is employed so that the limits in this part are not exceeded. Non-
professional installation or installation of the equipment with an improper antenna may void the
equipment authorization from the FCC and will void the TAGSYS warranty.
Operation is subject to the following two conditions: (1) The system devices may not cause harmful
interference, and (2) The library system devices must accept any interference received, including
interference that may cause undesired operation.
1.2.3 In Canada
Cet appareil numérique de la classe B respecte toutes les exigences du Règlement sur le matériel
brouilleur du Canada.
This Class B digital apparatus meets all requirements of the Canadian Interference-Causing
Equipment Regulations.
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Medio S001/S002 Reader Integrator's Guide
2 Introduction
2.1 General
This document provides information about how to install and use Universal Short Range Medio
S001/S002 Smart Label Readers.
2.2 Product Description
TAGSYS Medio S001/S002 Smart Label Readers are intended for Original Equipment
Manufacturer (OEM) applications. The Medio S001 and Medio S002 are Universal Short Range
13.56 MHz RFID readers designed to operate with any smart label using any TAGSYS chip (C210,
C220 or C240) as well as I-CodeTM and Tag-ItTM chips. Medio S002 readers also comply with ISO
15693 Part-2 and Part-3 specifications.
The Medio S001 has been upgraded allowing it to be compatible with the Medio S002 in
Standalone mode. This new version is known as the Medio S001 Rev. 2 and its
characteristics are clearly indicated throughout the document.
The Medio S001/S002 reader’s technical features make it the ideal device for easy integration into
handheld computers or printers. It offers the following features on a small printed circuit board:
• A high-performance radio processing unit operating at 13.56 MHz,
• A digital processing unit that incorporates chip drivers and includes the anti-collision feature
(depending on the type of chip).
Medio S001 or Medio S002 readers require minimal computing power from the host workstation
(Windows®-based PC or UNIX environment). It communicates easily with this host at a high
speed, using the simple TAGSYS enhanced communication protocol (STX-E) that has already
been proven on many TAGSYS readers (Medio S011/S012/S013 and Medio L100/L200).
Figure 1: Medio S001/S002 Smart Label Reader Application Overview
Smart Label
Device
Antenna
TTL or RS-232 Connection (S001)
TTL or RS-232/422/485 Connection (S002)
Host System
Medio
S001/S002
Smart Label
Reader
Although Medio S001/S002 readers provide high RF performances with a variety of smart labels,
their power consumption has been minimized to save host batteries and to increase operating
time.
The Medio S001 and Medio S002 Smart label readers are easy to integrate in a variety of
terminals and printers due to their following features:
• small size
• standard communication links
• low power consumption
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Introduction
2.3 Medio S001/S002 Key Features
Table 1: Medio S001/S002 Key Features
Description Medio S001 Medio S001 Rev. 2 Medio S002
Operating Frequency 13.56 MHz
Compatibility
TAGSYS (C210, C220 and C240)
I-CodeTM
Tag-ItTM
TAGSYS
(C210, C220 and C240)
I-CodeTM
Tag-ItTM
ISO 15693
Stand-alone Mode
TAGSYS C210 only
TAGSYS
(C210, C220 and C240)
I-CodeTM
Tag-ItTM
TAGSYS (C210, C220
and C240)
I-CodeTM
Tag-ItTM
ISO 15693
Primary Serial Link TTL
Secondary Serial Link RS-232 RS-232, RS-485
or RS-422
Network Operating No Yes
Configurable I/Os 4 (TTL)
Firmware upgradeable No Yes
Boot with last
configuration No Yes
2.4 Delivery
The Medio S001/S002 Smart Label Reader kit contains the following items:
Table 2: Package Contents
Quantity Item
1 Medio S001 or Medio S002 Smart Label Reader
1 HE-10 connector (10-pin)
1 CD-ROM including:
• Medio S001/S002 Integrator's Guide
• Medio S001/S002 Command Set
• User-friendly S002 Explorer software provided for test and debug operations on
Windows® 9x, NT®, 2000 and XP platforms
• Medio STX Windows® DLLs to facilitate the development your own applications on
Windows® 9x, NT®, 2000, XP and Windows® Pocket PC 2002 platforms
• Medio STX Windows® DLL Programming Guide
• One set of Microsoft® Visual C++® source code and executable samples using the
Medio STX Windows® DLLs
1 Welcome Letter / Product Return Form
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Medio S001/S002 Reader Integrator's Guide
3 Functional Overview
This section provides an overview of the architectural structure and peripheral devices of the Medio
S001 and Medio S002 Smart Label Readers. It also provides a summary of the special functions
used to drive the reader board and describes the automatic features managed by the Central
Processing Unit (CPU).
3.1 Functional Block Diagram
The Medio S001/S002 architectural structure is based on a CPU that drives all reader functions.
It manages communications between the host system (connected to the “Reader-to-Host
interface”) and one or more smart labels using an antenna (connected to the “Tag-to-Reader
interface”).
It also drives four standard Input/Outputs (I/Os) that are CMOS/TTL-compatible, and the Signal
Detection module that is used to detect signals (for instance, a smart label signal or environmental
radio noise).
Figure 2 illustrates the general architecture of Medio S001/S002 Smart Label Reader.
Figure 2: Overall Medio S001/S002 Architecture
Power
Supply
Reader-
to-Host
Interface
Central
Processing
Unit
STX-E
Decoder/
Encoder
4 Input/Output
Interface
Chip
Detection
Power Supply
Normal
TTL
RS-232
RS-422
RS-485
Stand-alone
Operating
Mode
ASCII
Protocol
Signal Detection
(Environment Evaluation)
Peripheral Devices
Antenna
Tag-to-
Reader-
Interface
Host Connections
Medio S001/S002
Smart Label Reader
Hardware
Shutdown
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Functional Overview
3.2 Communication Protocols
Figure 3: Medio S001/S002 Reader Communication Protocols
Unique Host Protocol
STXE-2 in Normal mode
ASCII Transmission
in Stand-alone mode
TTL Format
RS-232
RS-422/RS-485 (S002 Only)
Medio S001
Medio S002
Smart Label
Reader
Protocols
C210
C220
C240
C270 (I-Code™)
Tag-it™
ISO15693 (S002 only)
Antenna Air Interface
3.2.1 Tag-to-Reader Interface
To read from smart labels, to write to their memory, or to activate their functions, a wide command
set is available. For a complete list of embedded commands and their description, please refer to
the Medio S001/S002 Command Set document.
Each range of smart labels has its own specific set of commands.
Table 3: Smart Label Dedicated Commands
Smart Label Family Available Commands Comments
C210 Read the ID
Read Pages
Check Password
Write Page
C240
Temporary Inhibition
Read Memory Content Single chip and Anti-CollisionC220
Write Memory Content
Read Blocks Selective and Unselective
Read
Write Block
Halt
Reset Quiet
C270 I·Code™ -based smart
labels
Refresh Selection
Read Blocks
Write Block
Get Version
Tag-It™-based smart labels
SID Poll
ISO 15693 Raw Command Medio S002 Only
3.2.2 Reader-to-Host Interface
When the Medio S001/S002 reader is connected to an antenna, it acts more as a protocol
converter due to the wide range of tasks it can perform. For more information about these tasks,
refer to the Medio S001/S002 Command Set document.
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Medio S001/S002 Reader Integrator's Guide
Depending on the task requested by the user through the host interface, the reader retrieves
information from the smart label or provides it with information using its own communication
protocol. The reader then converts the result of the operation into STXE-2 protocol and returns the
information to the host via the Reader-to-Host interface. For more information, refer to the Medio
S001/S002 Command Set document.
The Reader-to-Host interface has two operating modes:
1. Normal Mode
The Reader-to-Host interface is the slave of the master host system. It waits for a valid
command from the host, performs the task and responds. This bi-directional
communication is achieved via the STX-Enhanced 2 protocol. (For more information,
please refer to the Medio S001/S002 Command Set document.)
2. Stand-alone Mode
The Reader-to-Host interface is independent from the host system. Stand-alone mode is
used by the Medio S001/S002 reader to read tags and send their identification data to the
host system. This transmission takes place in ASCII format. While in this mode, the reader
cannot receive any commands.
For more information, please refer to Section 6, “Stand-alone Mode”.
When using Medio S001 readers, Stand-alone Mode is only available with C210 chips. Medio
S002 and Medio S001 Rev. 2 readers support all their respective chip types.
3.3 Signal Detection Module
The Signal Detection module is a special feature that is managed by the CPU. This module is used
to evaluate the environment in which the reader is located. When activated, this module indicates
any signal detected by the Tag-to-Reader interface. This signal can be:
• A signal created by a TTF (Tag Talks First) chip such as a C210, C220 or a C240 smart
label,
• Any noisy signal that disrupts the Tag-to-Reader interface.
The Signal Detection module has two main applications:
1. Evaluating the Reading System Environment (Tag-to-Host Interface)
This function can detect any signal. It can, in particular, be used to detect environmental
noise that might disrupt reader reception.
Installation is optimum when the Signal Detection pin stays low with the RF field turned on
(no noisy signal). Nonetheless, because the reader has a basic signal filtering process,
when a noisy signal is received, smart labels may be able to read it. Performance,
however, may be affected.
2. Detecting TTF Smart Labels
TTF smart labels (C210, C220 or C240 chips) generate a continuous signal on the Tag-to-
Reader interface. This function can be used to detect those specific types of smart labels.
When TTF smart labels are being detected, communication such as reading the smart label
contents is not established. This function cannot be used to detect smart labels when the
reader is installed in a noisy environment creating a signal on the Tag-to-Reader interface.
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Functional Overview
The Signal Detection module is interrupted when the reader:
• Receives data on the host communication link
• Performs a task initiated by any valid command
• Sends a response
• Is in Stand-alone mode
3.4 Peripheral Devices
The I/O interface manages four pins that drive or check external peripherals. Their direction can be
set individually as either input or as output. When the reader is powered on, their default direction
is set as input.
Inputs are compliant with TTL/CMOS voltage levels.
Outputs consist of a full CMOS driver that can drive up to 20 mA (sunk or sourced).
The I/O pins are mainly used for static applications such as reading sensors or driving LEDs,
relays or buzzers. For more information, refer to Section 5.1, “Using the Input / Output Pins (I/Os)”.
3.5 Automatic Features
3.5.1 Baud Rate Recognition
The Baud Rate Recognition feature provides multi-host compatibility. In normal operating mode,
the CPU can detect whether the baud rate is 4800, 9600, 19200 or 38400, when a valid STX-E
frame is received.
The STXE-2 reader response frame will use the same baud rate as the valid command frame that
has been received.
3.5.2 RF Management
To reduce power consumption, smart label dedicated commands automatically manage the RF
field. Even if the RF is turned off, these commands activate the RF field. When the task has been
performed, the RF field either reverts to its initial state or stays on depending on the command.
Please refer to the Medio S001/S002 Command Set document for command-specific RF
management information.
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Medio S001/S002 Reader Integrator's Guide
4 Installing the Reader
This section explains how best to install the Medio S001/S002 Smart Label Reader board. The
physical description of the reader board is given in Section 8, “Mechanical Characteristics”.
4.1 Pin Connections
The Medio S001/S002 Smart Label reader board has three connectors with inputs and outputs to
the various peripheral devices, as illustrated in Figure 4.
Figure 4: Pin Locations
Power
Supply
Host-to-
Reader
Interface
1
GND
VCC
SHDW
IO0 IO1 IO2 IO3
ANT
GND
RX_TTL
TX_TTL
RX_RS232 / A
TX_RS232 / Z
Input/Output
Interface
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Central Processing Unit
(Product ID)
J1 Connector
J2 Connector
B
Y
NC
J3 Connector
SIGNAL
DETECTED
1
1
GND
NC
NC NC
Medio S001/S002
Smart Label
Reader Board
Table 4 lists the pins associated with each peripheral device.
Table 4: Pin Descriptions
Pin Description Connector
Power Supply
VCC Supply Voltage J1-9
SHDW Board Hardware shutdown (active low) J1-8
Communication Links to the Host System
RX_TTL Receive pin for TTL J1-7
TX_TTL Transmit pin for TTL J1-6
RX_RS232/A Receive pin for RS-232
Non-inverting RS-485/RS-422 Receiver
J1-5
J1-5 (Medio S002 Only)
TX_RS232/Z
Transmit pin for RS-232
Inverting RS485/RS422 Transceiver Output
Inverting Half-Duplex RS-485 Driver
J1-4
J1-4 (Medio S002 Only)
J1-4 (Medio S002 Only)
18/50 Revision 1.4 September 2003

Installing the Reader
Pin Description Connector
B Inverting RS485/RS422 Receiver Input J1-3 (Medio S002 Only)
Y Non-inverting RS-485/RS-422 Transceiver Output
Non-inverting Half-Duplex RS-485 Driver
J1-2 (Medio S002 Only)
J1-2 (Medio S002 Only)
Antenna
ANT Antenna output pin J2-1
I/O Interface
I/O0 Input / Output 0 J3-1
I/O1 Input / Output 1 J3-2
I/O2 Input / Output 2 J3-3
I/O3 Input / Output 3 J3-4
Signal detection Output signal for the signal detection function J3-9
Ground Voltage Reference
GND Ground (for power supply) J1-10
GND Ground (for I/Os) J3-5
GND Ground (for antenna) J2-2
Reserved Pins
NC J1-1
NC J1-2 (Medio S001 Only)
NC J1-3 (Medio S001 Only)
NC J3-6
NC J3-7
NC
Do not connect
J3-8
4.2 Power Supply and Hardware Shutdown
The power supply must be connected to a GND pin and to the VCC pin. The optimum GND pin is
located on the J1 connector. It must be able to withstand a peak current of 300 mA when the
reader is powered on. Please refer to Section 7, “Electrical Characteristics” for more details about
reader consumption.
The VCC pin accepts an input voltage between 4 and 6 V.
In order to power the peripheral devices and the CPU, the shutdown pin (SHDW) must be
connected to a high voltage level. When a low voltage is applied to this pin, the reader switches
to Low Consumption mode and the power supply to certain circuits is turned off.
Table 5 lists the electrical limits for the SHDW pin. If the hardware shutdown function is not
needed, the SHDW pin can be connected directly to the VCC pin.
September 2003 Revision 1.4 19/50

Medio S001/S002 Reader Integrator's Guide
Table 5: Shutdown Pin - Electrical Limits
Parameters Min. Max. Unit Note
SHDW Input Voltage High 2 6 V Board is powered on
SHDW Input Voltage Low 0.4 V Board is powered off
SHDW Input Current 7 µA Max reached when SHDW is low
If the SHDW pin is left unconnected, or if its input voltage is between 0.4 and 2V, the reader
may not work correctly. In any event, the SHDW pin voltage must not exceed 6V.
4.3 Antenna
The J2 connector is dedicated to an antenna that is required for reading smart labels. This can be
a TAGSYS antenna or a custom-made model. The choice of the antenna must take into account
the following considerations:
• Physical area (size) of the smart label
• Strength of the reader
• Compliance with electrical characteristics (see Electrical Characteristics chapter)
The antenna has a passive design that features 50 ohm, 0° impedance characteristics at 13.56
MHz frequency.
The reference voltage for the antenna must be connected to the GND pin and the antenna input
must be connected to the ANT pin of the J2 connector.
If the antenna is used close to the reader (less than 10 cm), a twisted pair can be used for the
connection. Otherwise, a coaxial cable (50 Ωimpedance) should be used. This cable must be as
short as possible, and must not exceed 30 cm.
Figure 5: Connecting an Antenna
Antenna
10 cm (max.)
GND
ANT Antenna Input
Antenna
Reference
Voltage
Twisted Pair
Antenna
Antenna
Reference
Voltage
GND
ANT Antenna Input
Coaxial Cable
30 cm (max.)
20/50 Revision 1.4 September 2003