Sigfox WSSFC-AG Tilt Sensor User Guide

: June 11, 2024
: Sigfox

Sigfox WSSFC-AG Tilt Sensor

Configuration Check List

This document is applied for the following products

SKU	WSSFC-AG	HW Ver.	1.0	FW Ver.	1.02
Item Code	WSSFC-AG-9-01	Sigfox XYZ Tilt sensor, Internal antenna, Type

AA battery 1.5VDC, IP67, RC2-RC3-RC4-RC5 zones
WSSFC-AG-8-01| Sigfox XYZ Tilt sensor, Internal antenna, Type AA battery 1.5VDC, IP67, RC1-RC6-RC7 zones

STEP 1: Select RC|
---|---
1. Select RC zone using Modbus Configuration Cable| RC zones selection 1, 2, 4 is RCZ1, RCZ2, RCZ4 (refer to register address 270 )
2. Select RC zone using button| Refer to the button configuration
STEP 2: Check ID and PAC|
Use Modbus Configuration Cable to read the ID and PAC values| Refer to register address 8 and 10 (DEC)
STEP 3: Configure the sensor’s operating parameters|
Configure parameters like cycle send data, alarm, a, b,…| Refer to the configuration section using the Modbus Configuration Cable
STEP 4: Add device to Backend Sigfox|
refer to section 5.4 for details|

Functions Change Log

HW Ver.	FW Ver.	Release Date	Functions Change
1.0	1.02	DEC-2020

Introduction

WSSFC-AG is a Sigfox Tilt Sensor, can be used to measure 3 tilt angles X, Y, Z of any object as Tower, Building, Tree, Electricity Tower, Telecom Tower, Bridges… The Tilt sensor utilises the combination of advanced Accelerometer and Gyro meter to deliver high accuracy and stable measurement of Tilt angle of 03 axis X,Y,Z. The Ultra-Low Power Power design and smart firmware allow the sensor to last up to 10 years with 02 x AA battery (depending on configuration). The sensor will transmit data in kilo-meters distance to Sigfox basestation. WSSFC-AG can support all regions of Sigfox network in over the World, RC1, RC2, RC3, RC4, RC5, RC6, RC7.

Specification

SENSORS SPECIFICATION:|
---|---
Tilt Sensor| Built-in advanced accelerometer and gyro meter to deliver tilt angle measurement of X, Y, Z
Measurement range| ± 90° of XYZ
Repeatibility| ± 0.25°
Sensor sampling rate| 1Hz max
Alarm setting| setting the alarm threshold for each angle
Sigfox SPECIFICATION:|
Sigfox zones| select RC2-RC3-RC4-RC5 or RC1-RC6-RC7
Antenna| Internal Antenna 2dbi
Battery| 02 x AA Type 1.5VDC, working time up to 10 years (depends on configuration)
RF Module complies to| CE, FCC, ARIB
Working temperature| -40°C..+60°C (using Energizer Lithium Ultimate AA battery)
Dimensions| H97xW73xD42
Net-weight| 250 grams
Housing| Polycarbonate & POM plastic, IP67

Dimensions

Operation Principle

Upon power on, the Sigfox node has60 seconds to wait foroff-line configuration (via cable with ModbusRTU protocol)

After 1 minute 30 seconds later the device will send the first data packet and at the same time wait for the downlink packet from the Base Station.
Then during the operation, there are 03 cases of sending data to base station:

When the sensor sampling time interval is reached, the Sigfox node will read the data from Input or sensor and performing the calculation. After that it will check calculated value with alarm thresholds. If the calculated was out off the threshold values (Lo or Hi), called alarm, and the number of times of alarm did not pass the limit of number of alarms, then it will send data to Base station immediately;
NOTE:
Once sending the data to base station by this alarm event, the timer of sending time interval will be reset;
When the sending time interval is reached, it will send data to Base station immediately, regardless of value;
By using the magnet key, the Sigfox node can be triggered to send data to base station immediately. There will be a beep sound from the buzzer meaning the data has been sent.

REED SWITCHS FUNCTIONS (activated by magnet):

EVENT| PRE-CONDITION| ACTION| LED STATUS| ACTIVITIES| POST-CONDITION
---|---|---|---|---|---
FORCE_DATA| Any state| Move Magnet Key to contact point of REED SWITCH.
Led blink SKY BLUE , move Magnet Key away.| Blink SKY BLUE| See FW specs| Back to previous state
PARAMETERS_UPDATE| Any state| Move Magnet Key to contact point of REED SWITCH.
Led blink SKY BLUE , hold Magnet Key 5s. Led blink PURPLE , move Magnet Key away.| Blink PURPLE| See FW specs| Back to previous state

NOTE:
Once sending the data to base station by the magnet key, the timer of sending time interval will be reset;
The shortest time interval between the two manual triggers is5s. if shorter than 5s, there will be no data sending.

LED meaning

Whenever the data is sent to base station, the LED will lit with color codes as below:

RC1: RED colour
RC2: GREEN colour
RC4: BLUE colour

Button Function

the push button can only be used for the first60 seconds after powering up.

Menu configuration

There are 3 configuration menus: tx_repeat, downlink_flag, radio configuration.
We use the button to enter the menus as follows:

tx_repeat

Press and hold the button2s -> When the Red LED is on, it means entering thetx_repeat configuration menu. Then release to configure it.
Press to configure. After pressing if the Red LED flashes once, tx_repeat = 0 (send 1 time). After pressing if the Red LED blinks twice, it is tx_repeat = 1 (send 3 times).

downlink_flag

Press and hold the button5s -> When the Green LED is on, it means entering thedownlink_flag configuration menu. Then release to configure it.
Press to configure. After pressing if theGreen LED flashes once, it is downlink_flag = 0 (downlink is not allowed).
After pressing if the Red LED blinks twice, it is downlink_flag = 1 (downlink is allowed).

radio configuration

Press and hold the button10s -> Blue LED is on, it means entering the Radio Configuration menu. Then release to configure it.
Press to configure. After pressing if the Blue LED blinks once, it is Radio Configuration = 1. After pressing if the Blue LED flashes twice, it is Radio Configuration = 2. After pressing if the Blue LED flashes 4 times, it is Radio Configuration = 4.

Exit the menu:

There are 3 ways to exit the menu :

Press and hold for 3s, the LED turns off to exit the menu;
Wait 30 seconds, then exit the menu;
Take out the battery, it all starts over (outside the menu)).

RC technical details

The RF transmit power will be automatically set as the max value as allowed by the Zone.
Sigfox Radio Configuration (RC) defines the radio parameters in which the device shall operate: Sigfox operating frequencies, output power, spectrum access mechanism, throughput, coexistence with other radio technologies, etc.
Each radio configuration includes 4 uplink classes: 0u, 1u, 2u, and 3u.
The Sigfox network globally works within the ranges from 862 to 928 MHz. But not all RCs require such a wide range of operation.

| RC1| RC2| RC4
---|---|---|---
Uplink center frequency (MHz)| 868.130| 902.200| 920.800
Downlink center frequency (MHz)| 869.525| 905.200| 922.300
Uplink data rate (bit/s)| 100| 600| 600
Downlink data rate (bit/s)| 600| 600| 600
Sigfox recommended EIRP (dBm)| 16| 24| 24
Specifics| Duty cycle 1% *| Frequency hopping | Frequency hopping

Duty cycle is 1% of the time per hour (36 seconds). For an 8 to 12 bytes payload, this means 6 messages per hour, 140 per day.
** Frequency hopping: The device broadcasts each message 3 times on 3 different frequencies. Maximum On time 400 ms per channel. No new emission before 20 s.
*** Listen Before Talk: Devices must verify that the Sigfox-operated 200 kHz channel is free of any signal stronger than −80 dBm before transmitting.
Sigfox’s high limit EIRP recommendation is included in each column although regulations sometimes allow for more radiated power than the Sigfox recommendation.
Sigfox’s recommendation is set to comply with the Sigfox technological approach of:
- Low current consumption
- Balanced link budget between uplink and downlink communication

Add a device to the Backend Sigfox

Step 1: Log in to the sigfox backend website
Step 2: Click on Device
Step 3: Click New → Select a group
Step 4: Fill in the required information

Note: Some of our products may not have end product certification in time, to add the product to Backend Sigfox please follow the steps below.

Click on the text as shown below

Check the box as shown below to register as a prototype

Measurement principle of Sigfox Sensor

When the sensor sampling time interval is reached, for example 2 minutes, the Sigfox node will wake up and switch ON the power supply to supply the energy to external sensor to start the measurement. Depends on the type and characteristic of external sensor, the sensor will take a certain time to finish the measurement.

Once reading the value, it can be scaled to any engineering value by the following formula:

Y = aX + b

Where :

X: the raw value from sensor
Y: the calculated value will be sent to Sigfox base station in the payload data.
a: constant (default value is 1)
b: constant (default value is 0)

So, if there is no user setting fora and b == > Y = X

The Y value will be compared with Lo and Hi threshold. Please refer below the graph of alarm processing.

Configuration Parameters

Parameter| Description| Possible values| Default value| Length (in bits)
---|---|---|---|---
LED_BUZZER_ENABLE| Enable/Disable LEDs and Buzzersinteractions for action not triggered by the reed switch| 0b0 = LEDs and Buzzers are OFF

0b1 = LEDs and Buzzers are ON

| 0b1 = LEDs and Buzzers are ON| 1
HEARTBEAT_PERIOD| Period of time to send HEARTBEAT event| 0b000 = every 1h 0b001 = every 6h 0b010 = every 12h

0b011 = every 24h (1 day) 0b100 = every 48h (2 days)

0b101 = every 72h (3 days)

0b110 = every 120h (5 days)

0b111 = every 240h (10 days)

| 0b011 = every 24h (1 day)| 3
MEASURE_PERIOD| Period of time to measure sensor| 0b0000 = every 1s 0b0001 = every 2s 0b0010 = every 5s 0b0011 = every 10s 0b0100 = every 20s 0b0101 = every 30s 0b0110 = every 1min 0b0111 = every 2min 0b1000 = every 5min 0b1001 = every 10min 0b1010 = every 20min 0b1011 = every 30min 0b1100 = every 1h 0b1101 = every 2h 0b1110 = every 3h 0b1111 = every 6h| 0b1001 = every 10min| 4
TX_REPEAT| Sigfox TX repeat| 0b0 = Send RF 1 time 0b1 = Send RF 3 time| 0b1 = Send RF 3 time| 1
CYCLIC_DATA_PERIOD| Period of time to send CYCLIC_DATA event| 0b000 = every 10min 0b001 = every 30min 0b010 = every 1h 0b011 = every 2h 0b100 = every 3h 0b101 = every 6h 0b110 = every 12h 0b111 = every 24h| 0b000 = every 10min| 3
DEVICE_RESET| Once this parameter is set, the device shall restart once after having received the Downlink.| 0b1010 = 0xA = force device reset

others = do nothing

Payload Data

The following is the format of payload data that will be sent to the Sigfox server.

Payload Fields

Data name| Description| Encoding or Possible values| Length (in bits)
---|---|---|---
EVENT_ID| Unique ID identifying the device event| 4-bit unsigned integer 0 = START_UP

1 = HEARTBEAT

2 = PARAMETERS_UPDATE

3 = FORCE_DATA

4 = CYCLIC_DATA

5 = ALARM

= Current configuration

Sigfox Uplink Frame Format

Size| | | | |
---|---|---|---|---|---
| START_UP| (led blink WHITE )| | |
| Payload| EVENT_ID| HW_VERSION| FW_VERSION| LATESTSIGFOX DOWNLINK
10.0| bits| 4| 4| 8| 64
| Value| 0b0000 = 0| yes| yes| yes
| | | | |
| HEARTBEAT| (led blink GREEN )| | |
| Payload| EVENT_ID| HW_VERSION| FW_VERSION| LATESTSIGFOX DOWNLINK
10.0| bits| 4| 4| 8| 64
| Value| 0b0001 = 1| yes| yes| yes
| | | | |
| PARAMETERS_UPDAT

| (led blink PURPLE )| | |
| Payload| EVENT_ID| HW_VERSION| FW_VERSION| LATESTSIGFOX DOWNLINK
10.0| bits| 4| 4| 8| 64
| Value| 0b0010 = 2| yes| yes| yes
| **FORCE_DAT

| (led blink
SKY BLUE )| | | | | | |
---|---|---|---|---|---|---|---|---|---
| Payload| EVENT_ID| HW_ERROR

| reserved| BATTERY_LE

| reserved| X_TILT_VAL

| U Y_TILT_VALU

| Z_TILT_VALU

8.0| bits| 4| 1| | 2| 4| 16| 16| 16
| Value| 0b0011 = 3| yes| zeros| yes| zeros| yes| yes| yes
| | | | | | | | |
| CYCLIC_DAT

| reserved| X_TILT_VAL

| Y_TILT_VALU

| Z_TILT_VALU

8.0| bits| 4| 1| 5| 2| 4| 16| 16| 16**
| Value| 0b0100 = 4| yes| zeros| yes| zeros| yes| yes| yes

Payload for Downlink, length is 8 bytes.

The Sigfox node is only able to receive max 04 downlinks a day, each downlink will be waiting in every 06 hours.

User can set the down link data in Sigfox back-end system in advance, whenever the Sigfox node connected to base stations and with downlink waiting is enable at that time (one time in 6 hours), the downlink data will be loaded to Sigfox node.
The downlink data can be any configuration parameter.

Please pay attention when send downlink data. If there was a mistake in sending wrong data, it would cause the Sigfox node not working properly and user need to configure it by offline cable!!

Size| | | | | | | | |
---|---|---|---|---|---|---|---|---|---
| DOWNLINK_TYPE
= 0
| | | | | | | |
| Payload| reserved| LED_BUZZER
| HEARTBEAT
| MEASURE
| TX_REPEAT| CYCLIC_DAT
| DEVICE_RES
| DOWNLINK

8.0| bits| 44| 1| 3| 4| 1| 3| 4| 4
| Value| zeros| yes| yes| yes| yes| yes| yes| 0b0000 = 0
| DOWNLINK_TYPE
= 5| | | | |
---|---|---|---|---|---|---
| Payload| PRM_ADDRESS| PRM_LENGTH| PRM_VALUE| reserved| DOWNLINK_TYPE
8.0| bits| 8| 8| 16| 28| 4
| Value| yes| 0x02 = 2| yes| zeros| 0b0101 = 5
| Payload| PRM_ADDRESS| PRM_LENGTH| PRM_VALUE| reserved| DOWNLINK_TYPE
8.0| bits| 8| 8| 32| 12| 4
| Value| yes| 0x04 = 4| yes| zeros| 0b0101 = 5

Offline configuration

Using the configuration cable to connect to the sensor as below picture.

Serial port configuration on computer: 9600 baud, None parity, 1 stop bit.
Reading data by Function 3.
Writing data by Function 16.

During connection with Modbus configuration tool, the Sigfox node will send all data in realtime: Battery, Battery level, Vref, Button status, reed switch status, PCB temperature, Measured value, alarm status.
Step to configure & check data:

NOTE:
The Modbus configuration can be done in the first60s after power up the Sigfox node. After 60s, if user can not finish the configuration, user need to reset the power of Sigfox node again, by removing battery in at least 15s.

Step 1 : Install the Modbus Configurator Software in the link below

https://filerun.daviteq.com/wl/?id=qK0PGNbY1g1fuxTqbFW9SXtEvCw7bpc6

How to use the Modbus configuration software

Step 2 : Plug the configuration cable to Computer via USB port;

Step 3 : Open the housing;

Step 4 : Plug the connector to the configuration port;

Step 5 : Import the configuration file by importing the csv file: Go to MENU:FILE / Import New / => select the file with name CONFIGURATION TEMPLATE FILE FOR SIGFOX.csv (in the link below). Then click Connect;

CONFIGURATION TEMPLATE FILE FOR SIGFOX.csv

Here is the table of Data will be read by Modbus tool

| Range| Default| Format| Property| Comment
---|---|---|---|---|---|---|---|---|---|---
2| 2| 3| | 4| FW_VERSIO
| | | string| Read|
6| 6| 3| | 2| HW_VERSIO
| | | string| Read|
8| 8| 3| | 2| DEVICE_ID| | | hex| Read| Product ID
** 10| A| 3| | 4| DEVICE_PAC
| | | hex| Read| Product PAC
14| E| 3| | 1| SENSOR_TY
| 1-255| | **** uint16| Read| Sensor or Input Type|

Here is the table for Configuration:

| Range| Default| Format| Property| Comment**
---|---|---|---|---|---|---|---|---|---|---
270| 10E| 3| 16| 4| CURRENT_C
| | | hex| Read / Write|
274| 112| 3| 16| 1| SERVER_CO
| | | uint16| Read / Write| 0: Send to Sigfox Network 1: Send to Dongle
276| 114| 3| 16| 1| RADIO_CON
| 1, 2, 4| 4| uint16| Read / Write| RC zones selection 1, 2 ,4 is RCZ1, RCZ2, RCZ4
277| 115| 3| 16| 1| TX_POWER| | 20| int16| Read / Write| RF Tx
power
286| 11E| 3| 16| 2| SENSOR_BO
| | 200| uint32| Read / Write| Boot time of sensor/input in ms

Installation

Locate the good place for Radio signal

To maximize the distance of transmission, the ideal condition is Line-of-sight (LOS) between the Sigfox sensor and Base station. In real life, there may be no LOS condition. However, the Sigfox sensor still communicate with Base station, but the distance will be reduced significantly.

ATTENTION:
DO NOT install the Sigfox sensor or its antenna inside a completedmetallic box or housing, because RF signal can not pass through metallic wall. The housing is made from Non-metallic materials like plastic, glass, wood, leather, concrete, cement…is acceptable.

Process mounting

Bracket installation

Site Installation

WARNING

The sensor must be securely fixed on the tilt angle measurement area.
The sensor only measures 3 axes from -90 degrees to 90 degrees
It is recommended to make a standard angle of 90 degrees for the sensor to achieve the best measurement results

Battery installation

-18 .. + 60 oC working temperature
10-year shelf life
3000 mAH Capacity
Price: 1X

-40 .. + 60 oC working temperature
20-year shelf life
3500 mAH Capacity
Price: 3.5X

Steps for battery installation:

Step 1: Using L hex key to unscrew M4 screws at the side of the housing and carefully pull out the top plastic housing in the vertical direction

Step 2: Insert 02 x AA 1.5VDC battery, please take note the poles of the battery

ATTENTION:
REVERSED POLARITY OF BATTERIES IN 10 SECONDS CAN DAMAGE THE SENSOR CIRCUIT!!!

Step 3: Insert the top plastic housing and locking by L hex key

ATTENTION:
When reinstalling the cover, pay attention to put the PCB edge into the middle slot of the box inside as shown below)

Troubleshooting

No.	Phenomena	Reason	Solutions
1	Node does not send RF to base station periodically, LED does not blink	No
power supply or battery ran out Configuration sending cycle is incorrect

Check that the battery is empty or not installed correctly Check the power supply Check the send cycle configuration
2| Node does not send RF to base station according to the alarm, LED does not blink| The alarm configuration is incorrect Running out of the number of alarms set for the day| Check alarm configuration Check the configuration for the maximum number of alarms per day
3| Node does not send RF to base station when activated by the magnetic switch, LED does not blink| Magnetic switch has malfunctioned Or place the Magnet key not right position| Locate the correct position for magnet key Read the status of the magnetic switch via modbus (when powering or attaching the battery) to see if the magnetic switch is working.
4| Node has blinked LED when sending RF but the base station cannot received| Out of the number of RF packages of uplink per day (140 packages / day)| Check on the base station whether the event message exceeds the number of RF packets
5| Node has sent RF but the LED does not blink| LED malfunction| Contact manufacturer
6| The measurement values from sensor do not change, keep constant values for long time| Sensor got failure Sensor cable broken Sensor connector is not connected firmly| Check sensor cable and connector If the issue is still exist, please contact manufacturer for warranty or replace new sensor
7| The node does not send RF and the RF module is hot| Insert the battery in the wrong direction Electronics got problem| Check battery polarity
8| RSSI is weak and often loses data| Distance between Node and Base station is far or there are many obstructions Connection to Antenna problem|

Check location of Sigfox node and distance to base station Check the antenna connector in the PCB

Support contacts

No.11 Street 2G, Nam Hung Vuong Res., An Lac Ward, Binh Tan Dist., Ho
Chi Minh City, Vietnam.
Tel: +84-28-6268.2523/4 (ext.122)
Email: info@daviteq.com | www.daviteq.com

Templogger Pty Ltd
Tel: 1800 LOGGER
Email: contact@templogger.net

References

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