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
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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
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license under the copyrights, patents or patent applications of Telit or other 3rd Party supplied
SW, except for the normal non-exclusive, royalty free license to use that arises by operation
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.
Copyrighted Materials
Software and documentation are copyrighted materials. Making unauthorized copies is
prohibited by law. No part of the software or documentation may be reproduced, transmitted,
transcribed, stored in a retrieval system, or translated into any language or computer language,
in any form or by any means, without prior written permission of Telit
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:
TS-[email protected]
TS-NORTHAMERIC[email protected]
TS-LATINAMERI[email protected]
TS-[email protected]
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