Adeunis RF SIGFOX User manual

SIGFOX RTU –User guide version 1.0
SIGFOX RTU Module
By Adeunis
User Guide Version 1.0
Document revision
Version
Date
Author
Comment
1.0
20/07/2019
EMT
Initial release
ADEUNIS
283 rue Louis Néel - Parc Technologique Pré Roux 38920 CROLLES - France
Tel. : [phone] - Fax : [phone]
www.adeunis.com [e-mail]

Page 2/ 25
Information
Document information
Title SIGFOX RTU by Adeunis
Subtitle User Guide Version 1.0
Document type User Guide
Document status
This document applies to the following products
Name Reference Firmware version
RTU SIGFOX module ARF8119A V01.04.00

Page 3/ 25
Table of contents
DOCUMENT INFORMATION ..................................................................................................................................... 2
TABLE OF CONTENTS.................................................................................................................................. 3
DISCLAIMER.................................................................................................................................................... 4
TECHNICAL SUPPORT............................................................................................................................................ 5
ENVIRONMENTAL RECOMMENDATIONS................................................................................................................... 5
WARNINGS ........................................................................................................................................................ 5
COMPLIANCE TO FCC US/CAN..................................................................................................................... 7
TECHNICAL SPECIFICATIONS ................................................................................................................ 10
ARF8119A –RC2(US) / RC4(AUS/NZ) module ...................................................................................... 10
DEVICE OVERVIEW.................................................................................................................................... 11
DEVICE DESCRIPTION .................................................................................................................................. 11
RTU MODULE PINING................................................................................................................................... 11
1RTU MODULE HARDWARE INTERFACE ....................................................................................... 12
1.1 HARDWARE INTERFACE.................................................................................................................... 12
1.1.1 RTU interface ........................................................................................................................... 12
1.1.2 RTU signal description ............................................................................................................. 13
1.2 SERIAL INTERFACE PROTOCOL......................................................................................................... 13
1.2.1 Command format...................................................................................................................... 13
1.2.2 Implemented commands ........................................................................................................... 19
1.2.3 Command execution time of RTU module................................................................................ 19
2RTU FEATURES MODE DESCRIPTION ........................................................................................... 20
2.1 RTU STATE MACHINE...................................................................................................................... 20
2.1.1 State diagram............................................................................................................................ 20
2.1.2 Idle and Nominal mode............................................................................................................. 20
2.1.3 Command mode ........................................................................................................................ 20
2.2 RTU APPLICATION INTERFACE IN COMMAND MODE....................................................................... 21
2.2.1 AT commands........................................................................................................................... 21
2.3 RTU APPLICATION INTERFACE IN NOMINAL MODE......................................................................... 22
2.3.1 Application commands: APPLICATION ➔ RTU.................................................................... 22
SIGFOX TEST MODES.................................................................................................................................. 23
3ANNEX 1 ................................................................................................................................................... 24

Page 4/ 25
DISCLAIMER
This document and the use of any information contained therein, is subject to the acceptance of the Adeunis RF
terms and conditions. They can be downloaded from www.adeunis.com.
Adeunis makes no warranties based on the accuracy or completeness of the contents of this document
and reserves the right to make changes to specifications and product descriptions at any time without
notice.
Adeunis reserves all rights to this document and the information contained herein.
Reproduction, use or disclosure to third parties without express permission is strictly
prohibited. Copyright © 2016, Adeunis. Adeunis is a registered trademark in the EU and
other countries.
All rights to this manual are the exclusive property of ADEUNIS . All rights reserved. Copying this manual (without
written permission from the owner) via printing, copying, recording or by any other means, translating this manual
(in full or partially) into any other language, including all programming languages, using any electrical, mechanical,
magnetic or optical devices, manually or any by other methods, is prohibited.
ADEUNIS reserves the right to change the technical specifications or functions of its products, or to cease
manufacturing any of its products, or to cease technical support for one of its products without notice in writing
and urges its customers to make sure that the information they have is valid.
ADEUNISF configuration software and programs are available free of charge in a non-modifiable version.
ADEUNISF can make no guarantees, including guarantees concerning suitability and applicability for a certain
type of application. Under no circumstances can the manufacturer, or the distributor of an ADEUNIS RF program,
be held liable for any damage caused by the use of the aforesaid program. Program names, as well as all
copyright relating to programs, are the exclusive property of ADEUNIS. Any transfer, granting of licences to a third
party, leasing, hire, transport, copying, editing, translation, modification into another programming language or
reverse engineering are prohibited without ADEUNIS’s prior written authorisation and consent.
ADEUNIS
283, rue Louis Néel
38920 Crolles France
Telephone [phone]
Fax [phone]

Page 5/ 25
Technical Support
Website
Our website contains much useful information: modules and stand-alone products information, user guides,
configuration software and technical documents which can be accessed 24 hours a day.
Email
If you have technical problems or cannot find the required information in the provided documents, contact our
Technical Support by email. Use our dedicated email address ([email protected]) rather than any personal email
address of our staff. This makes sure that your request is processed as soon as possible.
Helpful Information when Contacting Technical Support
When contacting Technical Support please have the following information ready:
•Product type (e.g. Wireless M-Bus),
•Firmware version (e.g. V3.03)
•Clear description of your question or the problem
•A short description of the application
•Your complete contact details
Environmental recommendations
All superfluous packaging materials have been eliminated. We have done everything possible to make it easy to
separate the packaging into three types of materials: cardboard (box), expanded polystyrene (filler material) and
polyethylene (packets, foam protective sheets). Your device is composed of materials that can be recycled and
reused if it is dismantled by a specialist company. Please observe local regulations concerning the manner in
which waste packaging material, used batteries and your obsolete equipment are disposed of.
Warnings
Valid for the following product:
ARF8119A
+AA Read the instructions in the
manual
The safety of this product is only guaranteed when it is used in accordance with its
purpose. Maintenance should only be carried out by qualified persons.
Please note, do not install the equipment close to a heat source or in damp conditions.
Warning: Do not open the product, risk of electric shock.
Please note: for your own safety, you must ensure that the equipment is switched off before carrying out any work on it.
Please note: For your safety, the power supply circuit must be SELV (Safety Extra Low Voltage) and must be a limited power sources.
Please note: for you own safety, you must ensure that equipment is switched off before carrying out any work on it.

Page 6/ 25
Recommendations regarding use
•Before using the system, check that the power supply voltage shown in the user manual corresponds to
your supply. If it doesn’t, please consult your supplier.
•Place the device against a flat, firm and stable surface.
•The device must be installed in a location that is sufficiently ventilated so that there is no risk of internal
heating and it must not be covered with objects such as newspapers, cloths, curtains, etc.
•The device’s aerial must be free and at least 10 cm away from any conducting material.
•The device must never be exposed to heat sources such as heating equipment.
•Do not place the device close to objects with naked flames such as lit candles, blowtorches, etc.
•The device must not be exposed to aggressive chemical agents or solvents likely to damage the plastic or corrode the
metal parts.
•Install your device close to its DC power supply.

Page 7/ 25
COMPLIANCE TO FCC US/CAN
Important regulary information
FCC ID : U3Z-ARF8119
• This device complies with part 15 of the FCC rules and Industry Canada licence-exempt RSS standard(s).
Operation is subject to the following two conditions: (1). this device may not cause Harmful interference, and (2).this device
must accept any interference received, including interference that may cause undesired operation ofthe device.
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
instruction, may cause harmful interference to radiocommunication. 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 from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
• CHANGES OR MODIFICATIONS NOT EXPRESSLY APPROVED BY ADEUNIS COULD VOID THE USER’S
AUTHORITY TO OPERATE THE EQUIPMENT.
Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or
lower) gain approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the
antenna type and its gain should be chosen so that the equivalent isotropically radiated power (e.i.r.p.) is not superior than
necessary for successful communication.
WARNING !
FOR MOBILE DEVICE USAGE
.
This radiation element complies with FCC RF radiation exposure limits set forth for general population.
This radiation element must be installed to provide a separation distance of at least 20cm from all
persons and must not be co-located or operating in conjunction with any other antenna or
transmitter.
To reduce potential radio interference to other users, the antenna type and its gain should be so chosen that the equivalent
isotropically radiated power (e.i.r.p.) is not more than that permitted for successful communication.”
This device has been designed to operate with the antennas listed below, and having a maximum gain of 6 dBi. Antennas
not included in this list or having a gain greater than 6 dBi are strictly prohibited for use with this device. The required
antenna impedance is 50 ohms.”
MobileMark PSKN3-925S 3 dBi gain dipole (see Annex1 for technical detail)
Adeunis 0 dBi+/-2dBgain PCB Antenna (see Annex1 for technical detail)
OEM Installation and Compliance Labeling
The ARF8119A module is labeled with its own FCC ID number, and, if the FCC ID is not visible when the module is installed
inside another device, then the outside of the device into which the module is installed must also display a label referring to
the enclosed transmitter module.
This exterior label can use wording such as the following:
“Contains Transmitter Module “Contains FCC ID: U3Z-ARF8119”
Any similar wording that expresses the same meaning may be used. The Grantee may either provide such a label, an
example of which must be included in the application for equipment authorization, or, must provide adequate instructions
along with the module which explain this requirement. In the latter case, a copy of these instructions must be included in the
application forequipment authorization.

Page 8/ 25
Ce dispositif est conforme aux règles de la FCC part 15 and à la norme CNR-210 d’Industrie Canada applicable aux
appareils radio exempts de licence. Son fonctionnement est sujet aux deux conditions suivantes : (1) le dispositif ne doit pas
produire de brouillage préjudiciable, et (2) ce dispositif doit accepter tout brouillage reçu, y compris un brouillage susceptible
de provoquer un fonctionnement indésirable.
Cet équipement a été testé et déclaré conforme aux limites d’un appareil numérique de classe B, conformément à la partie
15 des règles de la FCC. Ces limites sont conçues pour fournir une protection raisonnable contre les interférences nuisibles
dans une installation résidentielle. Cet équipement génère, utilise et peut émettre de l’énergie radiofréquence et, s’il n’est
pas installé et utilisé conformément aux instructions, peut causer des interférences nuisibles aux radiocommunications. Il est
cependant toujours possible que des interférences se produisent dans le cadre d’une installation particulière.
Si cet appareil produit des interférences nuisibles à la réception des programmes de radio et de télévision –détectables lors
de la mise hors tension ou en tension de l’appareil-l’utilisateur est encouragé à mettre en œuvre une ou plusieurs des
mesures suivantes pour remédier à ces interférences :
•Réorienter ou déplacer l’antenne de réception.
•Augmenter la distance entre l’équipement et le récepteur.
•Branchez le matériel à une sortie sur un circuit différent de celui auquel le récepteur est branché.
•Prendre conseil auprès du commerçant ou d’un technicien de radio/TV expérimenté.
Tout changement ou modification non expressément approuvé par la partie responsable des mesures de conformité peut
amener l’utilisateur à se voir interdire l’usage de l’appareil.
Cet appareil est limité à l’exploitation des fréquences autorisées Partie 15, et ne peut pas être configuré par des utilisateurs
finaux ou des installateurs professionnels à fonctionner en dehors des bandes autorisées.
Conformément à la réglementation d’Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d’un
type et d’un gain maximal (ou inférieur) approuvé pour l’émetteur par Industrie Canada. Dans le but de réduire les risques de
brouillage radioélectrique à l’intention des autres utilisateurs, il faut choisir le type d’antenne et son gain de sorte que la
puissance isotrope rayonnée équivalente (p.i.r.e.) ne dépasse pas l’intensité nécessaire à l’établissement d’une
communication satisfaisante.
ATTENTION !
POUR UTILISATION DE DISPOSITIF MOBILE
.
l’élément radio est conforme aux limites d'exposition aux rayonnements RF de la FCC établies pour la population générale.
l’élément radio doit être installé de manière à assurer une distance de séparation d'au moins 20 cm de tout
personnes et ne doivent pas être co-localisés ou fonctionner en conjonction avec toute autre antenne ou émetteur.
Pour réduire le brouillage radioélectrique potentiel causé aux autres utilisateurs, le type d’antenne et son gain doivent être
choisis de manière à ce que la puissance rayonnée isotropiquement équivalente (par exemple) ne soit pas supérieure à celle
autorisée pour une communication réussie. "
Cet appareil a été conçu pour fonctionner avec les antennes répertoriées ci-dessous et avec un gain maximal de 6 dBi. Les
antennes ne figurant pas dans cette liste ou ayant un gain supérieur à 6 dBi sont strictement interdites d'utilisation avec cet
appareil. L'impédance d'antenne requise est de 50 ohms. ”
MobileMark PSKN3-925S Dipole à gain de 3 dBi (voir détails en annexe1)
Antenne PCB Adeunis 0 dBi +/- 2dBgain (voir détails en annexe1)
I installation OEM et étiquetage de conformité
Le module ARF8119A est étiqueté avec son propre numéro d’identification FCC. Si l’ID FCC n’est pas visible lorsque le
module est installé dans un autre périphérique, l’extérieur du périphérique sur lequel il est installé doit également afficher
une étiquette faisant référence au module.
Cette étiquette extérieure peut utiliser les libellés suivants:
“Contains Transmitter Module“ Contient le FCC ID: U3Z-ARF8119 ”
Toute formulation similaire exprimant le même sens peut être utilisée. Le bénéficiaire peut soit fournir une telle étiquette,
dont un exemple doit être inclus dans la demande d’autorisation d’équipement, soit fournir des instructions adéquates ainsi

Page 9/ 25
que le module qui explique cette exigence. Dans ce dernier cas, une copie de ces instructions doit être incluse dans la
demande d'autorisation d'équipement
Identification :
• FCC ID : U3Z-ARF8119
Product reference: USA/CANADA: ARF8119A

Page 10 / 25
Technical specifications
ARF8119A –RC2(US) / RC4(AUS/NZ) module
Technical specifications
Communication
SIGFOX protocol & SIGFOX DBPSK
Module configuration
Through AT commands
Radio data rate
600bps
UART configuration
115.2 kbps/N/8/1
Frequency channels
ISM band 902-928MHz (US)- ISM band 915-928MHz(AUS/NZ)
RF output power
23dBm (200mW)
Sensitivity
down to -126dBm
Operating range (Line Of Sight)
Up to 15km
Operating temperature
-30°C / +70°C
Dimensions
TBD
Standard compliance
FCC - Title 47 CFR
Part 15, RSS - 247 Issue 2

Page 11 / 25
Device Overview
Device Description
The SIGFOX RTU module by Adeunis is a SIGFOX Class 0 compliant device. It is NOT a point-to-point device
and cannot be operated in such a way. It is meant to be paired to an operated network.
The SIGFOX RTU module by ADEUNIS RF is a ready to use system, which provides connection to any
operated network using the SIGFOX protocol. It allows transmitting, receiving and instantly viewing the radio
frames on the used network.
RTU module pining
1 –GND 21 –Uplink trigger
2 –GND 22 –TP1
3 –ANTENA 23 –Downlink trigger
4 –VCC 24 –NC
5 –GND 25 –NC
6 –NC 26 –RTU READY
7 –/RESET 27 –TP2
8 –NC 28 –GND
9 –BOOT 29 –TP3
10 –UART TX 30 –GND
11 –NC 31 –GND
12 –UART RX 32 –GND
13 –NC 33 –GND
14 –NC 34 –GND
15 –NC 35 –GND
16 –NC 36 –GND
17 –NC 37 –GND
18 –GND 38 –SWCLK
19 –GND 39 –SWDIO
20 –VCC
ARF8119A
RC2 / RC4

Page 12 / 25
1RTU module hardware interface
1.1 Hardware interface
1.1.1 RTU interface
The radio module is based on ADEUNIS’s form factor and for SIGFOX module:
Figure 1: Radio module
Pin
Function
description
7
Reset
Pulled up to VCC
Steady state = 1
1 = do nothing
0 = reset module
10
UART TX
/
12
UART RX
/
21
TX-Uplink monitor
Signal that indicates if an UL is in
progress
READ ONLY
Steady state = 0
1 = uplink in progress
0 = no uplink in progress
23
RX –downlink monitor
Signal that indicates if an DL is in
progress
READ ONLY
Steady state = 0
1 = Rx window opened
0 = Rx window closed
26
RTU READY
Indicate if module is ready to
receive commands on UART
READ ONLY
Steady state = 1
1 = RTU ready
0 = RTU busy
RTU READY
RX monitor
TX monitor
Reset

Page 13 / 25
UART Configuration:
•Data rate: 115.2 kbps,
•Data size : 8 bits
•Parity : None
•Stop bit : 1 bit
In exploitation mode, UART is in charge of exchanging data to transmit (UPLINK), data to receive
(DOWNLINK), + some other internal data and traces (DEBUG, etc..)
Before exchanging UART frame, one or several WakeUp character could be emitted by the RTU module. This
number of wake up character is configurable (Register S2xx)
1.1.2 RTU signal description
1.1.2.1 Reset signal
The reset signal allows a complete reset of the RTU module.
1.1.2.1 RTU ready signal
This signal is used to indicate to the host microcontroller if RTU module is ready for reception of new command.
When the signal is low, data sent on the UART of the module are ignored. Each time a new command is transmitted
to the RTU, this signal goes low until the end of the command processing. After an Uplink command request, RTU
Ready stays low for the complete IoT cycle. In that case, the duration may be very long (many seconds).
1.1.2.1 TX Uplink / RX Downlink signals
These two signals are signals frame activated at uplink (RF transmission) and downlink (RF reception) during IoT
cycle.
1.1.2.1 UART Tx an UART Rx signals
These two signals allow UART communication to support the serial interface protocol. UART TX is an output of
the RTU module, UART Rx is an input.
1.2 Serial interface protocol
This protocol will be used on exchnge from apllication to RTU module and vice&versa.
1.2.1 Command format
Frame format little endian ➔LSByte first
1.2.1.1 Command
[WKUP] / SOF / LENGTH / CMD / [OPTIONS] / [DATAS] / [CRC]
WKUP: wakeup characters (optional)
•N bytes '0xFF'
SOF: Start Of Frame: 2 bytes = 0x01FF (LSB First)
LENGTH: indicates size of frame including CMD, OPTIONS and DATAS, excluding CRC
•1 byte: (0x01 to 0xFF) = f(CMD)
CMD: Command
•1 octet
OPTIONS: depends on CMD (optional)
DATAS: depends on CMD (optional)
CRC: 4 bytes depends on CMD (optional)
1.2.1.2 Acknowledge - Command answer

Page 14 / 25
Acknowledge is always sent after receiving an application command ➔Application commands:
APPLICATION ( RTU
Acknowledge is always expected after transmitting an application firmware upgrade command ➔F4 / AF1 /
AF2 –Application µc firmware upgrade
[WKUP] / SOF / LENGTH / CMD / ACK / [DATA] / [CRC]
WKUP: wakeup characters (optional)
•N bytes '0xFF'
SOF: Start Of Frame: 2 bytes = 0x01FF (LSB First)
LENGTH: following frame bytes number: 1 bytes = 0x02 to 0xFF
CMD: 1 byte: 0xFF if unknown command else received CMD
ACK: Acknowledge: 1 byte
o0x06 ➔ACK
o0x15 ➔NACK
DATA: [OPTIONNEL] only if ACK
CRC: 4 bytes depends on CMD (optional)
Command Uplink
Initiate a Uplink.
SOF / LENGTH / CMD / OPTIONS / DATA
CMD : Command
•0x04
OPTIONS
•SIGFOX OPTIONS ➔CTRL/TEMP
oCTRL
▪Bit 0 ➔bidir cycle if 1
▪Bit 1 ➔frame OOB
▪Bit<3 :2> ➔Nb of transmission (0 : valeur du registre, 1 à 3 : Nb of transmission
oTEMP : Temperature expressed in tenths of degrees, signed in addition to 2 (2 octets –LSB
First)
Command : Vbat Application
To inform the module about the supply voltage of the application.
SOF / LENGTH / CMD / Vbat
LENGTH : 0x03
CMD : Command
•0x05
VBAT : Application battery voltage in mV - 2 octets, LSB First
Command : Vbat Module RTU
Lets you know the supply voltage of the module.
SOF / LENGTH / CMD / Vbat
LENGTH : 0x01
CMD : Command
•0x06

Page 15 / 25
Answer :
•ACK ➔SOF / 0x03 / 0x06 / 0x06 / VBAT (mV, 2 octets LSB First)
•NACK ➔SOF / 0x02 / 0x06 / 0x15
Command ATReg Read
Allows you to read AT registers
SOF/ LENGTH / CMD / DATA
LENGTH : 0x03 (1 register) à 0x7F (63 registers)
CMD : Command
•0xFC
DATA: [REG1][REG2]….. [REG63]
•[REGx]: n° du registre à lire, 2 octets (LSB First)
Answer :
•ACK ➔SOF / 0x06 / 0xFC / 0x06 / [REG1_VAL][REG2_VAL]…..[REG63_VAL]
•NACK ➔SOF / 0x02 / 0xFC / 0x15 / N°_REG
REGx_VAL: register value : 4 octets (LSB First)
N°_REG:
•0 if problem on the format of the frame: Length error, number of data (except CMD) % 2 !=0
•1 to 63 register index in the DATA field that caused the NACK
•
Command ATReg Write
Allows writing AT registers
SOF/ LENGTH / CMD / DATA
LENGTH : 0x07 (1 register) à 0xFD (42 registers)
CMD : Command
•0xFD
DATA: [REG1][VALUE1] [REG2][VALUE2]….. [REG42][VALUE42],
•[REGx]: number of the register to modify, 2 octets (LSB First)
•[VALUEx]: value of the register to modify, 4 octets (LSB First)
Anwser :
•ACK ➔SOF / 0x06 / 0xFD / 0x06
•NACK ➔SOF / 0x02 / 0xFD / 0x15 / N°_REG
N°_REG:
•0 if problem on the format of the frame: Length error, number of data (except CMD) % 6 !=0
•1 a 42 register index in the DATA field that caused the NACK
Command Enter Command Mode
Enter command mode.
SOF/ LENGTH / CMD
LENGTH : 0x01

Page 16 / 25
CMD : Command
•0xFE
Anwser :
•ACK ➔SOF / 0x06 / 0xFE / 0x06 / ‘C’ / ‘M’ / 0x0D / 0x0A
•NACK ➔SOF / 0x02 / 0xFE / 0x15
Emission orders or informational commands : RTU ➔APPLICATION
These commands inform the application about the behavior of the RTU module.
Command Downlink
SOF / LENGTH / CMD / OPTIONS / DATA
LENGTH: length bytes to follow in bytes - always 8 for SIGFOX
CMD : Command
•0x00
OPTIONS
•SIGFOX : OPTIONS ➔RXWIN/Freq/ RSSI
oRXWIN : fenêtre de réception durant laquelle les données ont été reçues
▪0x00 ➔RX1
oFreq : fréquence exprimée en Hz (4 octets –LSB First)
oRSSI : niveau de réception de la trame de downlink (1 octet / signé)
DATA : downlink

Page 17 / 25
Command Encapsulation trace
Necessary encapsulation of the trace frames so that the application can redirect them to external UART / USB
SOF / LENGTH / CMD / TRACE_DATA
LENGTH : lenght TRACE_DATA + 1 octets
CMD : Command
•0x01
TRACE_DATA :
1.2.1.2.1 Command Uplink Cfg
Sent before each Uplink broadcast.
SOF / LENGTH / CMD / OPTIONS
LENGTH: 0x0C (sigfox)
CMD : Command
•0x02
OPTIONS
•SIFGFOX : OPTIONS ➔FREQ / BAND / TXPOWER / TXTIMEONAIR / SEQ /ULNUM
oFREQ : frequency expressed in Hz (4 octets –LSB First)
oBAND : frequency band (1 octet)
oTXPOWER: transmission power in dBm (1 octet)
oTXTIMEONAIR: transmission time of the frame expressed in ms (2 octets –LSB First)
oSEQ : Sequence number (2 octets), LSB First
oULNUM : Up Link Number (1 byte) (1 = First date UL, 2 = Second date UL, 3 = third date UL,
0 = OOB UL)
Command Power Fail
Sent in the event of a power failure, the supply voltage is lower than the minimum voltage (AT register S260),
once the command has been sent, the module automatically switches to STOP mode.
SOF / LENGTH / CMD
LENGTH: 0x01
CMD : Command
•0x03
Command RxWindowOpening
This command is issued when a reception window is opened
SOF / LENGTH / CMD / OPTION
LENGTH: 0x02
CMD : Command
•0x05
SIGFOX: OPTIONS ➔RX_SLOT
oRX_SLOT :
▪0x00 ➔Rx slot 1
oRx FREQ : frequency expressed in Hz (4 octets –LSB First)

Page 18 / 25
Command Init Done
This command is issued as soon as the module is initialized.
SOF / LENGTH / CMD
LENGTH: 0x01
CMD : Command
•0xFE

Page 19 / 25
1.2.2 Implemented commands
Command code
Description
Type
Acknowledgement
CRC
Application to RTU Commands (Application command)
0x00
Reset RTU module
Sigfox
Yes
No
0x01
Start RTU module
Sigfox
Yes
No
0x02
Stop RTU module
Sigfox
Yes
No
0x04
Uplink request
Sigfox
Yes
No
0x05
Application power
supply voltage
Sigfox
Yes
No
0x06
RTU module power
supply voltage
Sigfox
Yes
No
0xFE
Enter command
mode
Sigfox
Yes
No
0x09-0xFD
RFU
RTU to Application Commands (Indication command)
0x00
Downlink message
Sigfox
No
No
0x01
Trace message
Sigfox
No
No
0x02
Uplink configuration
message
Sigfox
No
No
0x03
Power fail message
Sigfox
No
No
0x05
Reception window
opening
Sigfox
No
No
0x07
New Cycle Allowed
Sigfox
No
No
0x08-0xFC
RFU
0xFE
Init Done
Sigfox
No
No
0xFF
RFU
1.2.3 Command execution time of RTU module
This chapter is only for APPLICATION module command sent to RTU module with Acknowledgment
mechanism.
The command execution time will be indicated through pin RTU_READY maintained in low state position
during the time of command execution. This time depends on the command to execute.

Page 20 / 25
2RTU features mode description
2.1 RTU State Machine
2.1.1 State diagram
Figure 9: RTU state diagram
2.1.2 Idle and Nominal mode
At powerup or after a reset or the module enter idle mode. To allow IoT communication, the host controller must
send the Start RTU command (command code 0x01). In these states, the module reaches ultra low power
consumption while there is not command processing. The module is automatically wakeup by the char received
on its UART and returns to standby mode after the processing.
2.1.3 Command mode
Command mode is the configuration and test command state of the RTU module. Command mode may be
entered from Idle mode or Nominal mode by sending the Enter Command Mode command (command code
0xFE). In this mode, the RTU is not standby so there is no power saving while the module stays in this state. The
command format is based on AT style command which is an ASCII oriented format.
Nominal
mode
-
Comman
d mode
-
Configuration
& Test
command
Reset
ATO command
Idle mode
-
Waiting for a
start from
host
Start RTU
command
Stop RTU
command
Enter Command mode
command
Enter Command mode
command