USER GUIDE FOR SIGFOX NODE PROCESS PRESSURE SENSOR WSSFC-PPS

WSSFC-PPS -MN-EN-01

SEP-2020

This document is applied for the following products

SKU	WSSFC-PPS	HW Ver.	1.2	FW Ver.	1.2
Item Code	WSSFC-PPS-9-10	Sigfox Node Gage Process Pressure Sensor, Internal antenna, range 0-10 barg, accuracy 0.5%, process connection G1/4-male, 304SS, Type AA battery 1.5VDC, IP67, RC2-RC3-RC4-RC5 zones
	WSSFC-PPS-8-10	Sigfox Node Gage Process Pressure Sensor, Internal antenna, range 0-10 barg, accuracy 0.5%, process connection G1/4-male, 304SS, Type AA battery 1.5VDC, IP67, RC1-RC6-RC7 zones

0. Configuration Check List

STEP 1: Select RC
1. Select RC zone	RC zones selection 1, 2, 4,... is RCZ1, RCZ2, RCZ4,...  (refer to section 5)
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 5
STEP 4:  Add device to Backend Sigfox
refer to section 5.4 for details
STEP 5:  Installation
refer to section 7  for details

1. Change Log

Document Ver.	Release Date	Change log
1.0	SEP-2020	- First version for WSSFC-PPS
1.1	FEB-2022	- Update information

2. Introduction

WSSFC-PPS is a Sigfox node integrated Process Pressure Sensor, and it has different kinds of measurements, such as Gage/Absolute/Sealed Gage, range -1 .. + 700 bar, high accuracy, and stability. The sensor will transmit data in kilo-meters distance to Sigfox basestation. WSSFC-PPS can support all regions of Sigfox network in over the World, RC1, RC2, RC3, RC4, RC5, RC6, RC7.

3. Specification

SENSORS SPECIFICATION:
Sensor	Advanced PIEZO technology
Measurement range	Select from -1 .. + 700 bar Gage/Absolute/Sealed Gage
Over pressure protection	1.5 x Span
Accuracy & Stability	0.5% of span, < 0.3% span/year
Wetted parts	304SS/316SS
Measuring Fluids	Any fluid which is workable with materials 304SS/316SS
Working temperature	-10 .. + 80 oC
Process connection	Standard G1/4 or Others (consult factory)
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	-40oC..+60oC (using Energizer Lithium Ultimate AA battery)
Dimensions	H180xW50xD40
Net-weight	250 grams
Housing	Polycarbonate & POM plastic, IP67

4. Dimensions

5. Operation Principle

Upon power on, the Sigfox node has 60 seconds to wait for off-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:

1. 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;

2. When the sending time interval is reached, it will send data to Base station immediately, regardless of value;

3. 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. (Buzzer will be updated in the latest version)

EVENT	PRE-CONDITION	ACTION	LED STATUS	BUZZER STATUS	ACTIVITIES	POST-CONDITION
FORCE_DATA	Any state	Move Magnet Key to contact point of REED SWITCH. Buzzer beep 1 time, move Magnet Key away.	Blink SKY BLUE	Beep 1 time	See FW specs	Back to previous state
PARAMETERS_UPDATE	Any state	Move Magnet Key to contact point of REED SWITCH. Buzzer beep 1 time, hold Magnet Key 5s. Buzzer beep 2 times.	Blink PURPLE	Beep 2 times	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 is 15s. if shorter than 15s, there will be no data sending.

5.1 LED meaning

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

5.2 Button Function

5.2.1 Menu configuration

There are 3 configuration menus: tx_repeat, downlink_flag, radio configuration.

We use the button to enter the menus as follows:

5.2.1.1 tx_repeat

Press and hold the button 2s  ->  When the Red LED is on, it means entering the tx_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).

5.2.1.2 downlink_flag

Press and hold the button 5s  ->  When the Green LED is on, it means entering the downlink_flag configuration menu. Then release to configure it.

Press to configure. After pressing if the Green 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).

5.2.1.3 radio configuration

Press and hold the button 10s  ->  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.

5.2.2 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)).

5.3 RC technical details

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 **

** 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:

5.4 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

5.5 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.

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

Y = aX + b

Where:

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.

5.6 Configuration Parameters

Parameter	Description	Possible values	Default value	Length (in bits)
HIGH_ALARM_SETPOINT	High alarm setpoint for calculated value	32-bit float	1000000000	32
LOW_ALARM_SETPOINT_FACTOR	Low alarm setpoint for calculated value	8-bit unsigned integer LOW_ALARM_SETPOINT = HIGH_ALARM_SETPOINT *  LOW_ALARM_SETPOINT_FACTOR / 200	0	8
ALARM_ENABLE	Enable/Disable ALARM event	0b0 = ALARM event is OFF 0b1 = ALARM event is ON	0b0 = ALARM event is OFF	1
ALARM_PERIOD	Period of time to send ALARM 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
LED_BUZZER_ENABLE	Enable/Disable LEDs and Buzzersinteractions for action not triggered by the reed switch		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	0b001 = every  30min	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	0b0000 = do nothing	4
DOWNLINK_TYPE	Downlink type	4-bit unsigned integer See Sigfox Downlink tab	0b0000	4

5.7 Payload Data

The following 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.

5.7.1 Payload Fields

5.7.2 Sigfox Uplink Frame Format

Size
	START_UP	(led blink WHITE)
	Payload	EVENT_ID	HW_VERSION	FW_VERSION	LATEST_SIGFOX_ 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	LATEST_SIGFOX_ DOWNLINK
10.0	bits	4	4	8	64
	Value	0b0001 = 1	yes	yes	yes
	PARAMETERS_UPDATE	(led blink PURPLE)
	Payload	EVENT_ID	HW_VERSION	FW_VERSION	LATEST_SIGFOX_ DOWNLINK
10.0	bits	4	4	8	64
	Value	0b0010 = 2	yes	yes	yes

	FORCE_DATA	(led blink SKY BLUE)
	Payload	EVENT_ID	HW_ERROR	reserved	ALARM	BATTERY_LEVEL	reserved	RAW_VALUE	PRESSURE
8.0	bits	4	1	3	2	2	4	16	32
	Value	0b0011 = 3	yes	zeros	yes	yes	zeros	yes	yes
	CYCLIC_DATA	(led blink SKY BLUE)
	Payload	EVENT_ID	HW_ERROR	reserved	ALARM	BATTERY_LEVEL	reserved	RAW_VALUE	PRESSURE
9.0	bits	4	1	3	2	2	4	16	32
	Value	0b0100 = 4	yes	zeros	yes	yes	zeros	yes	yes
	ALARM	(led blink RED)
	Payload	EVENT_ID	HW_ERROR	reserved	ALARM	BATTERY_LEVEL	reserved	RAW_VALUE	PRESSURE
9.0	bits	4	1	3	2	2	4	16	32
	Value	0b0101 = 5	yes	zeros	yes	yes	zeros	yes	yes

5.7.3 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	HIGH_ALARM_SETPOINT	LOW_ALARM_SETPOINT_FACTOR	ALARM_ENABLE	ALARM_PERIOD	LED_BUZZER_ENABLE	HEARTBEAT_PERIOD
8.0	bits	32	8	1	3	1	3
	Value	yes	yes	yes	yes	yes	yes
	MEASURE_PERIOD	TX_REPEAT	CYCLIC_DATA_PERIOD	DEVICE_RESET	DOWNLINK_TYPE
	4	1	3	4	4
	yes	yes	yes	yes	0b0000 = 0

Size
	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

6. Configuration

DANGER:

DO NOT OPEN THE COVER AT HAZARDOUS LOCATION!

ONLY OPEN COVER FOR TROUBLE SHOOTING AND CONFIGURATION IN SAFE AREA!

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 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, 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 and install the driver;

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 FW1.9.3.csv (in the link below). Then click Connect;

CONFIGURATION TEMPLATE FILE FOR SIGFOX WSSFC-PPS.csv

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

Modbus Register (DEC)	Modbus Register (Hex)	Function Code (Read)	Function Code (Write)	No. of Registers	Description	Range	Default	Format	Property	Comment
2	2	3		4	FW_VERSION			string	Read
6	6	3		2	HW_VERSION			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_TYPE	1-255		uint16	Read	Sensor or Input Type

Here is the table for Configuration:

7. Installation

7.1 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 completed metallic 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.

7.2 Process mounting

WARNINGS:

1. Please make sure the fluid is suitable with the wetted materials of the sensor. Please refer sensor specification;
2. Please make sure the operating temperature and pressure is suitable with the sensor. Please refer sensor specification;
3. Prepare the professional tools for installation. The inappropriate tools may cause damage to the sensor.

DANGER:

1. The installer need to be equipped with full Safety gears during installation, such as safety glasses, safety shoes, safety cloths, safety mask...Please follow the safety instructions of the installation site;
2. The installer must be qualified for this installation job;
3. The installer must be permitted by Site's owner for performing the installation;

• Consider to use the isolation valve 1/2" or 1/4" to isolate the media and the sensor during maintenance;
• Fully closing the isolation valve during installation and maintenance the sensor;
• Fully open the isolation valve during normal operation;

There are two ways of process mounting as below.

7.2.1 Mounting direct on Pipe

• The total weight of the sensor MUST be within the permitted load of the pipe to be installed;
• Consider to build the support for the pipe if the sensor weight is larger than the permit;
• Below picture shown without the isolation valve, but we highly recommend to use isolation valve.

7.2.2 Remote mounting on wall or pole

• Make sure the wall or place of pole for mounting is not covered or affected by the surrounding metallic objects;
• Using the metal tubing and fittings for interconnection between process pipe and sensor process connector;
• The metal tubing and fitting materials, and size must be sizing properly to suit the process conditions;
• It is better to install the isolation valve next to sensor process connector.

7.3 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 the type AA battery, please take note the polarity 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	No pressure Lost connection with the sensor	Check pipe pressure Check sensor connection
7	The node does not send RF and the RF module is hot	Insert the battery in the opposite direction Short circuit	Warranty or replacement
8	RSSI is weak and often loses data	Distance between Node and Gateway is far or there are many obstructions Connection to Antenna problem	Check Antenna position Install Node in a well ventilated location

9. Support contacts

Manufacturer Daviteq Technologies Inc 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	Distributor in Australia and New Zealand Templogger Pty Ltd Tel: 1800 LOGGER Email: contact@templogger.net