Telit Wireless Solutions LE51-868S DemoUnit User Manual

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Notice

While reasonable efforts have been made to assure the accuracy of this document, Telit
assumes no liability resulting from any inaccuracies or omissions in this document, or from
use of the information obtained herein. The information in this document has been carefully
checked and is believed to be entirely reliable. However, no responsibility is assumed for
inaccuracies or omissions. Telit reserves the right to make changes to any products described
herein and reserves the right to revise this document and to make changes from time to time
in content hereof with no obligation to notify any person of revisions or changes. Telit does
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of law in the sale of a product.

Usage and Disclosure Restrictions
License Agreements

The software described in this document is the property of Telit and its licensors. It is
furnished by express license agreement only and may be used only in accordance with the
terms of such an agreement.

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Software and documentation are copyrighted materials. Making unauthorized copies is
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High Risk Materials

Components, units, or third-party products used in the product described herein are NOT
fault-tolerant and are NOT designed, manufactured, or intended for use as on-line control
equipment in the following hazardous environments requiring fail-safe controls: the operation
of Nuclear Facilities, Aircraft Navigation or Aircraft Communication Systems, Air Traffic
Control, Life Support, or Weapons Systems (High Risk Activities"). Telit and its supplier(s)
specifically disclaim any expressed or implied warranty of fitness for such High Risk
Activities.

Trademarks

TELIT and the Stylized T Logo are registered in Trademark Office. All other product or
service names are the property of their respective owners.

Copyright © Telit Communications S.p.A. 2014.

The aim of this document is to present the functional aspects of the LE51-868S Telit module
embedding Telit in house stack and the stand-alone SIGFOX® protocol.

After a short description of the DemoUnit and its installation principles, its functioning will
be detailed in more advanced operation modes.

This document is intended for developers using Telit LE51-868s Module.

For general contact, technical support, to report documentation errors and to order manuals,
contact Telit Technical Support Center (TTSC) at:

[e-mail]
[e-mail]
[e-mail]
[e-mail]

Alternatively, use:

http://www.telit.com/en/products/technical-support-center/contact.php

For detailed information about where you can buy the Telit modules or for recommendations
on accessories and components visit:

http://www.telit.com

To register for product news and announcements or for product questions contact Telit
Technical Support Center (TTSC).

Our aim is to make this guide as helpful as possible. Keep us informed of your comments and
suggestions for improvements.

Telit appreciates feedback from the users of our information.

This document contains the following chapters

“Chapter 1: “Introduction” provides a scope for this document, target audience, contact and

support information, and text conventions.

“Chapter 2: “General description” gives an overview of the Demokit parts.
“Chapter 3: “Detailed equipment description” describes EVK and DIP boards
“Chapter 4: “Installation” describes how to connect different parts of Demokit.
“Chapter 5: “Advanced Operation” gives the reference for the complete use of the Demokit.
“Chapter 6: “Safety Recommendations” describes recommendation for proper usage.
“Chapter 7: “Glossary” shows acronyms used in the document.
“Chapter 8: “Document history” describes the revision history of the document.

Danger – This information MUST be followed or catastrophic equipment failure or bodily
injury may occur.

Caution or Warning – Alerts the user to important points about integrating the module, if
these points are not followed, the module and end user equipment may fail or malfunction.

Tip or Information – Provides advice and suggestions that may be useful when
integrating the module.

All dates are in ISO 8601 format, i.e. YYYY-MM-DD.

 [1] SIGFOX stand-alone module user guide, 1VV0301109
 [2] SR Tool User Guide, 1vv0300899
 [3] LE51-868S RF module User Guide, 1VV0301131

The goal of the DemoUnit is to show to customers the possibilities offered by LE51-868S
Telit module embedding the Telit stand-alone SIGFOX® protocol.

The DemoCase contains an LE51 module.
For detailed HW information on LE51, please refer to the dedicated documentation.

SIGFOX provides an end-to-end solution for your transmission chain, from your equipment
through to your information system. With a clear Internet focus and a specifically designed
and tailored cloud service, SIGFOX’s network uses web communication protocols that make
it easy to integrate your applications.

SIGFOX’s network is designed around a hierarchical structure:

 UNB modems communicate with base stations, or cells, covering large areas of

several hundred square kilometers,

 Base stations route messages to servers,
 Servers check data integrity and route the messages to your information system.

SRManagerTool is the PC software to configure and monitor a Star Network.
For installation and detailed use, refer to the dedicated documentation [2] available on the

Telit web site.

The DemoUnit is composed by the following items:

- 1 DemoBoard units. (a DemoBoard is composed by: 1 USB EVK board, 1 module on its

DIP support, 1 antenna)

- 1 USB cable

- 1 primary batteries (+9V)

- 1 information notice

SW1

SW2

SW3

SW4

J5

LD4

LD3

LD2

LD1

Designation

Feature

SW1

Stand-by switch

SW3

Programming switch

SW2

Reset push button

SW4

ON/OFF switch

LD1

PROG Yellow LED

LD2

ON/OFF Yellow LED

LD3

Red LED

LD4

Green LED

IO9

IO5

IO2

IO1

IO4

IO6

IO3

In order to build each demoboard:

1. Plug the DIP module on the EVK board.

2. Screw the SMA antenna on the DIP module.

3. Plug the USB cable to the EVK board.

4. Plug a +9B battery if needed

In order to connect a demoboard:

1. Connect the USB cable to the PC.

The Demoboard is supplied directly through the USB connection. In case of mobility is
needed, a +9V battery can be used. When battery is plugged, it has priority on the USB
power supply.

2. Check that stand-by (STBY, SW1) and programming (PROG, SW3) switches are turned

OFF.

3. Switch the DemoBoard ON (SW4).

OFF ON

4. Check that the yellow LED LD2 lights on when power supplying the DemoBoard.

Refer to SR Tool user guide ([2]) for a detail description of SR tool installation

In order to reflash a demoboard:

1. Switch the DemoBoard OFF (SW2).

2. Turn programming switch (PROG, SW4) to ON.

3. Switch the DemoBoard ON (SW2).

4. Reflash the demoboard using SR Tool (Refer to SR Tool user guide ([2]) for a detail

description of flashing procedure)

5. Switch the DemoBoard OFF (SW2).

6. Turn programming switch (PROG, SW4) back to OFF.

Refer to SR Tool user guide ([2]) and SIGFOX stand-alone module user guide ([1]) for a
detailed description of usage.

The LE51-868S is preconfigured to be able to send data to the SIGFOX Network. The sent
data will be displayed on the SigFox BackEnd at the address http://backend.sigfox.com.

Access to the SIGFOX BackEnd is provided by SIGFOX:
In order to perform a transmission test the following steps shall be followed:

- Start a serial terminal on your PC

- Connect to the COM port associated to the USB connection between your PC and the

LE51-868 (default serial port configuration is the following speed: 19200 bps, 8N1)

- Type the following hexadecimal values A5 05 01 25 48 65 6C 6C 6F 1F 02 5A (see next

paragraph for serial protocol description).

- Connect to the SIGFOX Backend

- The message you have just sent should be reported (hexadecimal values) in the SIGFOX

BACKEND (48 65 6C 6C 6F)

In order to avoid data loss or data error, we provide a serial protocol interface. The Serial
protocol described in this chapter shall be used only when the module is in DATA mode.

Please note that this protocol must be used in conjunction with hardware flow control.
Frame format:

FIELD

LENGTH
(bytes)

Possible values

Comments

Header

1

0xA5

Length

1

0x00 – 0xFF

It’s the payload length

Type

1

DATA - 0x01
KEEP - 0x02
BIT - 0x03
CONFIRM - 0x10

DATA: simple data
KEEP: used to send a keep

alive message as described

in the SIGFOX standard; it’s

in charge to the user to send
the keep alive message
every 24 hours

BIT: send a status bit
following the SIGFOX
protocol

Sequence Number

1

0x01 – 0xFF

It’s in charge to user to put a

valid value to recognize the
association packet send –
confirm received

Payload

0x00 – 0xFF

Up to customer

DATA: up to 255 bytes
KEEP: must be omitted
BIT: one byte with value 0

or 1

CRC

2

Up to customer

It’s the sum of all bytes

except header and tailer (lsb
first)

Tailer

1

0x5A

After receiving a packet on the serial, the firmware sends a confirm packet on the serial port
to inform the user about success or packet error.

The confirm format is the same shown above, and the fields will be filled as follow:

Length: it’s the payload length, usually 1
Type: it is the same type sent by the host ORed with CONFIRM value.
Sequence number: it’s the same sent by the host
Payload: is the error code returned by the firmware

enum Ack
{
NO_ERROR = 0,
SERIAL_LENGTH_ERROR,

SERIAL_CRC_ERROR,
SERIAL_TAILER_MISS_ERROR,
SERIAL_TIMEOUT_ERROR,
SERIAL_GENERIC_ERROR,
SFX_INIT_ERROR,
SFX_SEND_ERROR,
SFX_CLOSE_ERROR
}

In order to send data with payload (0x70, 0x69, 0x70, 0x70, 0x6F), the corresponding serial
stream is: (A5 05 01 25 48 65 6C 6C 6F 1F 02 5A). Where length is 0x05, type is 0x01,
sequence number is 0x25 and CRC is 0x021F.

In order to send a Keep-Alive message the corresponding serial stream is: (A5 00 02 15 17 00
5A). Where length is 0x00, type is 0x02, sequence number is 0x15 and CRC is 0x0017.

READ CAREFULLY

Be sure the use of this product is allowed in the country and in the environment required. The
use of this product may be dangerous and has to be avoided in the following areas:

 Where it can interfere with other electronic devices in environments such as hospitals,

airports, aircrafts, etc.

 Where there is risk of explosion such as gasoline stations, oil refineries, etc. It is

responsibility of the user to enforce the country regulation and the specific

environment regulation.
Do not disassemble the product; any mark of tampering will compromise the warranty
validity. We recommend following the instructions of the hardware user guides for a correct
wiring of the product.
The product has to be supplied with a stabilized voltage source, Safety Extra Low Voltage,
with no energy hazard. The wiring has to be conforming to the security and fire prevention
regulations. The product has to be handled with care, avoiding any contact with the pins
because electrostatic discharges may damage the product itself.
The system integrator is responsible of the functioning of the final product; therefore, care has
to be taken to the external components of the module, as well as of any project or installation
issue, because the risk of disturbing external devices or having impact on the security. Should
there be any doubt, please refer to the technical documentation and the regulations in force.
When installed in final product, a fire protection enclosure must be provided. Every module
has to be equipped with a proper antenna with specific characteristics. The antenna has to be
installed with care in order to avoid any interference with other electronic devices and has to
guarantee a minimum distance from the body (20 cm).

The European Community provides some Directives for the electronic equipments

introduced on the market. All the relevant information’s are available on the European

Community website:

http://ec.europa.eu/enterprise/sectors/rtte/documents/

The text of the Directive 99/05 regarding telecommunication equipments is available,
while the applicable Directives (Low Voltage and EMC) are available at:

http://ec.europa.eu/enterprise/sectors/electrical/

ACP

Adjacent Channel Power

BER

Bit Error Rate

Bits/s

Bits per second (1000 bits/s = 1Kbps)

CER

Character Error Rate

dBm

Power level in decibel milliwatt (10 log (P/1mW))

EMC

Electro Magnetic Compatibility

EPROM

Electrical Programmable Read Only Memory

ETR

ETSI Technical Report

ETSI

European Telecommunication Standard Institute

FM

Frequency Modulation

FSK

Audio Frequency Shift Keying

GFSK

Gaussian Frequency Shift Keying

GMSK

Gaussian Minimum Shift Keying

IF

Intermediary Frequency

ISM

Industrial, Scientific and Medical

kbps

kilobits/s

LBT

Listen Before Talk

LNA

Low Noise Amplifier

MHz

Mega Hertz (1 MHz = 1000 kHz)

PLL

Phase Lock Loop

PROM

Programmable Read Only Memory

NRZ

Non return to Zero

RF

Radio Frequency

RoHS

Restriction of Hazardous Substances

RSSI

Receive Strength Signal Indicator

Rx

Reception

SRD

Short Range Device

Tx

Transmission

SMD

Surface Mounted Device

VCO

Voltage Controlled Oscillator

VCTCXO

Voltage Controlled and Temperature Compensated Crystal Oscillator

Revision

Date

Changes

0

2014-02-12

First Release