USER GUIDE FOR SIGFOX SENSOR WITH ANALOG INPUT WSSFC-AI

THIS IS OBSOLETE MANUAL

Please access https://www.iot.daviteq.com/wireless-sensors for updated manual

WSSFC-AI-MN-EN-01

 

FEB-2020

This document is applied for the following products

SKU

WSSFC-AI

HW Ver.

2.4

FW Ver.

1.9.3

Item Code

WSSFC-AI-9-01

Sigfox Sensor with Analog input 0-20mA or 0-10VDC, pre-calibrated, Internal antenna, Type C battery 1.5 - 3.6VDC, IP67, M12-M for sensor connection, M12-F for external power supply, RC2-RC3-RC4-RC5 zones

WSSFC-AI-8-01

Sigfox Sensor with Analog input 0-20mA or 0-10VDC, pre-calibrated, Internal antenna, Type C battery 1.5 - 3.6VDC, IP67, M12-M for sensor connection, M12-F for external power supply, RC1-RC6-RC7 zones

1. Functions Change Log

HW Ver.

FW Ver.

Release Date

Functions Change

1.0

1.0.1

FEB-2020

1.0

1.0.1

08-MAY-2020

Updated correct file for CONFIGURATION TEMPLATE FILE FOR SIGFOX WSSFC-AI FW1.9.3.csv

2. Introduction

WSSFC-AI is the modular design Sigfox wireless sensor, based on 10-year experience in design and manufacturing Industrial sensor of Daviteq Company. It can accepts the analog output signal 0-20mA/0-10VDC from any sensor, transmitter...It can supplies the power to external sensor at 15VDC @ 50mA max. With Ultra-low power design and smart firmware allow the complete Wireless and Sensor package run on a Single battery C type up to 10 years. WSSFC-AI can support all regions of Sigfox network in over the World, RC1, RC2, RC3, RC4, RC5, RC6, RC7.

3. Specification

Input

01 x Analog input, 0 .. 20mA or 0..10VDC, selectable

Accuracy

0.05% of span

Resolution

1/3000

Temperature drift

< 50ppm

Power supply to sensor

15VDC @ max 50mA

Electrical connection

M12-M connector

Sigfox zones

select RC2-RC3-RC4-RC5 or RC1-RC6-RC7

Antenna

Fixed external Antenna 2.67 dbi

Battery

01 x C Type 1.5 - 3.6VDC, working time up to 10 years (depends on configuration), extendable by external battery box or power supply

RF Module complies to

CE, FCC, ARIB

Working temperature

-40oC..+85oC (using LS26500 battery)

Dimensions

H106xW73xD42 (Wireless part only)

Netweight

190 grams (Wireless part only)

Housing

Aluminum + Polycarbonate plastic, IP67

4. Product Pictures

5. Operation Principle

SIGFOX SENSOR WITH ANALOG INPUT WSSFC-AI has one port of analog can accept the DC current input from 0 - 20mA.

It can also provide the power supply to the external sensor or field instrument, the power supply is at 15VDC @ max 50mA.

Upon power on, the Sigfox node has 60 seconds to wait for off-line configuration (via cable with ModbusRTU protocol).

After that, sigfox node will send the first message to 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 force to send data to base station immediately.

* Notes:Once sending the data to base station by the magnet key, the timer of sending time interval will be reset;The shortest duration between 02 times of magnet key activation should be larger than 15s (no downlink) or 60s (with downlink);

5.1 LED meaning

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

RC1: RED colour

RC2: GREEN colour

RC4: BLUE colour

5.2 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

RC3

RC4

RC5

RC6

RC7

Uplink center frequency (MHz)

868.130

902.200

923.200

920.800

923.300

865.200

868.800

Downlink center frequency (MHz)

869.525

905.200

922.200

922.300

922.300

866.300

869.100

Uplink data rate (bit/s)

100

600

100

600

100

100

100

Downlink data rate (bit/s)

600

600

600

600

600

600

600

Sigfox recommended EIRP (dBm)

16

24

16

24

14

16

16

Specifics

Duty cycle 1% *

Frequency hopping **

Listen Before Talk ***

Frequency hopping **

Listen Before Talk ***

Duty cycle 1% *

* 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

5.3 Process of measurement

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 and deliver the stable output of DC current.

For example, the measurement time is 500ms, after this time, the Analog input port of Sigfox node will read the value of DC current and then perform the calculation inside the micro-controller unit, with low cut and high cut performing Upon finished reading, Sigfox node will switch OFF power supply to external sensor to save energy. The shorter of measurement time, the more saving of energy of battery. The measurement time will be configured via offline Modbus configuration tool.

Once reading the analog value, the raw data is from 0 .. 4095 (unsigned integer), it can be scaled to any engineering value by the following formula:

Y = aX + b

Where:

X: the raw value (0..4095) from analog input port

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 for a and b ==> Y = X

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

​

5.4 Payload Data

The folllowing is the format of payload data will be sent to Sigfox server. Length is 6 bytes, it is future-proof for expansion to 12 bytes.

Sensor type (1 byte)

Status (1 byte)

1st - Parameter (4 bytes)

Meaning of Data in the Payload

Data

Size (byte)

Bit

Format

Meaning

Sensor type = 00000001

1

all

Uint8

- Sensor type = 00000001 means Sigfox node with analog 0-20mAdc input

Status: batt level

1

Bit 7 and 6

Uint8

Battery capacity in 04 levels 11: battery level 4 (99%) 10: battery level 3 (60%) 01: battery level 2 (30%) 00: battery level 1 (10%)The next - 2 bits : The next - 2 bits : b

Status: error

Bit 5 and 4

Node status 01: error 00: no error

Status: alarm 1

Bit 3 and 2

Alarm status of 1st - parameter (Y value) 11 : Hi alarm 01 : Lo alarm 00 : No alarm

Status: alarm 2

Bit 1 and 0

Spare for alarm status of 2nd - parameter

1st - Parameter

4

all

float

- Y value (calculated value of measurement)

6. Configuration

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, reedswitch status, PCB temperature, Measured value, alarm status.

Step to configure & check data:

NOTE:the Modbus configuration can be done in the first 60s 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.

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

https://filerun.daviteq.com/wl/?id=BaX6RFlaEySKSYHX2j5nYHKBgeWckrox

How to use the Modbus configuration software

Step 2: Plug the configuration cable to computer via usb port and install the driver;

Step 3: Open the plastic housing;

Step 4: Plug the connector to the configuration port;

Step 5: Insert the battery;

Step 6:  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 WSSFC-AI FW1.9.3.csv (in the link below). Then click Connect;

CONFIGURATION TEMPLATE FILE FOR SIGFOX WSSFC-AI FW1.9.3.csv

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

Modbus Register (Decimal)

Modbus Register (Hex)

Function Code

# of Registers

Description

Range

Default

Format

Property

Comment

0

0

3

2

device info

string

Read

Product name

2

2

3

4

firmware version

1.0

string

Read

6

6

3

2

hardware version

1.0

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

sen_type

1-255

uint16

Read

Sensor or Input Type

15

F

3

1

batt level

0-3

uint16

Read

Battery level

16

10

3

1

err_status

0-1

uint16

Read

Sensor error code

17

11

3

1

prm1 alm_status

0-2

uint16

Read

Alarm status of 1st parameter

18

12

3

1

prm2 alm_status

0-2

uint16

Read

Alarm status of 1st parameter

19

13

3

2

prm1 value

float

Read

1st calculated value

21

15

3

2

prm2 value

float

Read

2nd calculated value

23

17

3

1

batt %

10%, 30%, 60%, 99%

uint16

Read

Battery %

24

18

3

2

batt volt

0-3.67 vdc

float

Read

Battery Voltage

26

1A

3

2

temp

oC

float

Read

RF module temperature

28

1C

3

1

vref

0-3.67 vdc

uint16

Read

Vref of RF Module

29

1D

3

1

btn1 status

0-1

uint16

Read

Button status, 0: released, 1: pressed

30

1E

3

1

btn2 status

0-1

uint16

Read

Reedswitch status, 0: opened, 1: closed

Here is the table for Configuration:

Modbus Register (Decimal)

Modbus Register (Hex)

Function Code

(Read)

Function Code

(Write)

# of Registers

Description

Range

Default

Format

Property

Comment

256

100

3

16

1

modbus address

1-247

1

uint16

Read/

Write

Modbus address of device

257

101

3

16

1

modbus baudrate

0-1

0

uint16

Read/

Write

Baudrate: 0: 9600, 1: 19200

258

102

3

16

1

modbus parity

0-2

0

uint16

Read/

Write

Parity: 0: none, 1: odd, 2: even

259

103

3

16

9

serial number

string

Read/

Write

(PW)

Product S/N

268

10C

3

16

2

password for setting

uint32

Read/

Write

Password for setting

270

10E

3

16

1

Radio Configuration

1-6

4

uint16

Read/

Write

RC zones selection 1..6 is RCZ1 .. RCZ6

271

10F

3

16

1

tx_power

20

int16

Read/

Write

RF Tx power

272

110

3

16

1

tx_repeat

0-1

1

uint16

Read/

Write

Number of repeat, 0: 1 time, 1: 3 repeats

273

111

3

16

1

downlink_flag

0-1

0

uint16

Read/

Write

1: enable Downlink, 0: disable Downlink (Fw v1.0 hasn't got Downlink function)

274

112

3

16

2

cycle_send_data

900

uint32

Read/

Write

Data sending cycle, in seconds

276

114

3

16

2

spare

Spare for future

278

116

3

16

1

alarm_limit

44

uint16

Read/

Write

Limit number of alarm sending in 24h

279

117

3

16

1

spare

Spare for future

280

118

3

16

2

sensor1: sampling_rate

120

uint32

Read/

Write

Sensor/Input 1 sampling rate, in seconds

282

11A

3

16

2

sensor1: calc_time

100

uint32

Read/

Write

Measurement time of sensor/input 1, in ms

284

11C

3

16

2

sensor2: sampling_rate

120

uint32

Read/

Write

Sensor/Input 2 sampling rate, in seconds

286

11E

3

16

2

sensor2: calc_time

100

uint32

Read/

Write

Measurement time of sensor/input 2, in ms

288

120

3

16

2

prm1: a

1

float

Read/

Write

Constant a for scaling measured value 1

290

122

3

16

2

prm1: b

0

float

Read/

Write

Constant b for scaling measured value 1

292

124

3

16

2

prm1: Delta

-1

float

Read/

Write

Delta value for calculated value 1

294

126

3

16

2

prm1: High threshold

100000

float

Read/

Write

Hi Threshold for calculated value 1

296

128

3

16

2

prm1: High Hysteresis

10000

float

Read/

Write

Hysterisis for Hi for calculated value 1

298

12A

3

16

2

prm1: Low threshold

0

float

Read/

Write

Lo Threshold for calculated value 1

300

12C

3

16

2

prm1: Low Hysteresis

10000

float

Read/Write

Hysterisis for Lo for calculated value 1

302

12E

3

16

2

prm1: High cut

100000

float

Read/

Write

High cut value for calculated value 1

304

130

3

16

2

prm1: Low cut

0

float

Read/

Write

Low cut value for calculated value 1

306

132

3

16

2

prm2: a

1

float

Read/

Write

Constant a for scaling measured value 2

308

134

3

16

2

prm2: b

0

float

Read/

Write

Constant b for scaling measured value 2

310

136

3

16

2

prm2: Delta

-1

float

Read/

Write

Delta value for calculated value 2

312

138

3

16

2

prm2: High threshold

100000

float

Read/

Write

Hi Threshold for calculated value 2

314

13A

3

16

2

prm2: High Hysteresis

10000

float

Read/

Write

Hysterisis for Hi for calculated value 2

316

13C

3

16

2

prm2: Low threshold

0

float

Read/

Write

Lo Threshold for calculated value 2

318

13E

3

16

2

prm2: Low Hysteresis

10000

float

Read/

Write

Hysterisis for Lo for calculated value 2

320

140

3

16

2

prm2: High cut

100000

float

Read/

Write

High cut value for calculated value 2

322

142

3

16

2

prm2: Low cut

0

float

Read/

Write

Low cut value for calculated value 2

7. Installation

7.1 Mounting bracket installation

The mounting bracket is made from hard metallic material. Following to these steps as the below picture

7.2 Installation location

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

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

7.3 IO Wiring & Sensor installation

WSSFC-AI can use both Internal and External Power sources. When we plug in an External power source, WSSFC-AI will prioritize using external power. When the external power is disconnected, WSSFC-AI will use the Internal battery power.

WSSFC-AI has two M12 connectors : POWER and SENSOR .

7.3.1 POWER Connector

The POWER connector is an 3..3.6VDC external battery port, so if you want to use this port you must connect the POWER port to the POWER voltage converter cable as shown below.

The input power of the voltage converter cable is 12 ... 24VDC with DC jack and the output is 3.6VDC M12 Connector to connect with WSSFC-AI.

NOTE:Please do not supply the WSSFC-AI POWER port directly with 12 ... 24VDC without voltage converter cable.

7.3.2 SENSOR Connector

Connect the sensor to WSSFC-AI as shown below

For example: Connect the WSSFC-AI sensor to the Submersible Liquid Level Transmitter via M12 Connector

7.4 Power Supply & Battery installation

Steps for battery installation:

Step 1: Using L hex key to unscrew M4 screws at the side of housing

Step 2: Carefully pull out the top plastic housing in the vertical direction

Step 3: Insert the type C battery, please take note the poles of battery

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

Step 4: 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)

8. Troubleshooting

No.

Phenomena

Reason

Solutions

1

Node does not send RF to base station periodically, LED does not blink

No power supply

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

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 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

LED welding is not good

Check LED condition and LED weld

6

The value of the sensor is 0

Sensor connecting 4-20mA is loose

Check sensor connection

9. Support contacts

Manufacturer

Daviteq Technologies IncNo.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

Distributor in Australia and New Zealand

Templogger Pty Ltd

Tel: 1800 LOGGER

Email: contact@templogger.net