Netvox R718PE User manual

Model：R718PE

Wireless Top Mounted Ultrasonic Liquid Level Sensor

R718PE

User Manual

This document contains proprietary technical information which is the property of NETVOX Technology. It shall be maintained

in strict confidence and shall not be disclosed to other parties, in whole or in part, without written permission of NETVOX

Technology. The specifications are subject to change without prior notice.

Table of Content

1. Introduction.......................................................................................................................................................................................2

2.Appearance........................................................................................................................................................................................2

3. Main Features ...................................................................................................................................................................................3

4. Set up Instruction..............................................................................................................................................................................4

5. Data Report.......................................................................................................................................................................................5

6. Application scenario .......................................................................................................................................................................10

7. Installation ......................................................................................................................................................................................11

8. Information about Battery Passivation...........................................................................................................................................13

8.1 To determine whether a battery requires activation................................................................................................................13

8.2 How to activate the battery.....................................................................................................................................................13

9. Important Maintenance Instruction ................................................................................................................................................14

1. Introduction

R718PE is a Wireless Top Mounted Ultrasonic Liquid Level Sensor device for Netvox ClassA type devices based on the

LoRaWAN open protocol and is compatible with the LoRaWAN protocol.

R718PE uses ultrasound to detect the distance between the device and the detected object. The medium the device detects is the

air, so the detected object can be any liquid or solid that has a flat and horizontal surface, water level.

LoRa Wireless Technology:

LoRa is a wireless communication technology dedicated to long distance and low power consumption. Compared with other

communication methods, LoRa spread spectrum modulation method greatly increases to expand the communication distance.

Widely used in long-distance, low-data wireless communications. For example, automatic meter reading, building automation

equipment, wireless security systems, industrial monitoring. Main features include small size, low power consumption,

transmission distance, anti-interference ability and so on.

LoRaWAN:

LoRaWAN uses LoRa technology to define end-to-end standard specifications to ensure interoperability between devices and

gateways from different manufacturers.

2. Appearance

Ultrasonic Ranging Sensor

Indicator

Function Key

3. Main Features

Apply SX1276 wireless communication module

2 sections ER14505 3.6V Lithium AA battery

Liquid level detection

Protection Level: IP65 / IP67 (optional), Ultrasonic Ranging Sensor: IP67

Compatible with LoRaWANTM Class A

Frequency hopping spread spectrum technology

Configuration parameters can be configured through third-party software platforms, data can be read and alarms can be set via

SMS text and email (optional)

Available third-party platform: Actility / ThingPark, TTN, MyDevices/Cayenne

Low power consumption and long battery life

Note:

Battery life is determined by the sensor reporting frequency and other variables, please refer to

http://www.netvox.com.tw/electric/electric_calc.html.On this website, users can find battery life time for varied models at

different configurations.

4. Set up Instruction

On/Off

Power on Insert batteries. (users may need a flat blade screwdriver to open)

Turn on Press and hold the function key for 3 seconds till the green indicator flashes once.

Turn off (Restore to factory

setting) Press and hold the function key for 5 seconds till green indicator flashes for 20 times.

Power off Remove Batteries.

Note:

1. Remove and insert the battery; the device is at off state by default.

2. On/off interval is suggested to be about 10 seconds to avoid the interference of capacitor

inductance and

other energy storage components.

3. At 1st -5th second after power on, the device will be in engineering test mode.

Network Joining

Never joined the network

Turn on the device to search the network to join.

The green indicator stays on for 5 seconds: success

The green indicator remains off: fail

Had joined the network

(not at factory setting)

Turn on the device to search the previous network to join.

The green indicator stays on for 5 seconds: success

The green indicator remains off: fail

Function Key

Press and hold for 5 seconds

Restore to factory setting / Turn off

The green indicator flashes for 20 times: success

The green indicator remains off: fail

Press once The device is in the network: green indicator flashes once and sends a report

The device is not in the network: green indicator remains off

Sleeping Mode

The device is on and in the

network

Sleeping period: Min Interval.

When the reportchange exceeds setting value or the state changes:

send a data report according

to Min Interval.

Low Voltage Warning

Low Voltage 3.2V

5. Data Report

Example of ConfigureCmd

FPort：0x07

Bytes 1 1 Var(Fix =9 Bytes)

CmdID DeviceType NetvoxPayLoadData

CmdID– 1 bytes

DeviceType– 1 byte – Device Type of Device

NetvoxPayLoadData– var bytes (Max=9bytes)

The device will immediately send a version packet report along with an uplink packet including status, distance, filllevel and

battery voltage.

Status:

When the device is used for water level detection/waste bin detection, the status always reports "0".

When the device is used for parking detection, the distance between the device and the car reaches the

OnDistanceThreshold, it reports status ON.

Distance:

The distance between the device and the liquid / solid

Filllevel:

The percentage of the level in the container.

When the device is used for parking detection, the status always reports "0".

The device sends data in the default configuration before any configuration is done.

Default Setting

Maximum time: Max Interval = 15 min

Minimum time: Min Interval = 15 min

BatteryVoltageChange - 0x01 (0.1V)

DistanceChange - 0x012C(300mm)

Note:

1. The device report interval will be programmed based on the default firmware which may vary.

2. The interval between two reports must be the MinTime

3. The data parsing reported by the device is referenced by the Netvox LoRaWAN Application Command document and

http://www.netvox.com.cn:8888/page/index

(1) Configure device parameters MinTime = 1min, MaxTime = 1min, BatteryChange = 0.1v、DistanceChange = 500mm

Downlink: 01B1003C003C0101F40000

Device returns:

81B1000000000000000000 (configuration succeeded)

81B1010000000000000000 (configuration failed)

(2) Read device parameters

Downlink: 02B1000000000000000000

Device returns:

82B1003C003C0101F40000 (device current configuration parameter)

(3) Configure device parameters FillMaxDistance = 5000mm

Downlink: 05B1138800000000000000

Device returns:

85B1000000000000000000 (configuration succeeded)

85B1010000000000000000 (configuration failed)

Description Device CmdID Device

Type NetvoxPayLoadData

ConfigReportReq

R718PE

0x01

0x B1

MinTime

(2bytes Unit:s) MaxTime

(2bytes Unit:s) BatteryChange

(1byte Unit:0.1v) DistanceChange

(2byte Unit:1mm) Reserved

(2byte)

ConfigReportRsp 0x81 Status

(0x00_success) Reserved

(8Bytes,Fixed 0x00)

ReadConfig

ReportReq 0x02 Reserved

(9Bytes,Fixed 0x00)

ReadConfig

ReportRsp 0x82 MinTime

(2bytes Unit:s) MaxTime

(2bytes Unit:s) BatteryChange

(1byte Unit:0.1v) DistanceChange

(2byte Unit:1mm) Reserved

(2byte)

SetOnDistance

ThresholdRreq 0x03 OnDistanceThreshold

(2byte Unit:1mm) Reserved

(7Bytes,Fixed 0x00)

SetOnDistance

ThresholdRrsp 0x83 Status

(0x00_success) Reserved

(8Bytes,Fixed 0x00)

GetOnDistance

ThresholdRreq 0x04 Reserved

(9Bytes,Fixed 0x00)

GetOnDistance

ThresholdRrsp 0x84 OnDistanceThreshold

(2byte Unit:1mm) Reserved

(7Bytes,Fixed 0x00)

SetFillMax

DistanceReq 0x05 FillMaxDistance

(2byte Unit:1mm) Reserved

(7Bytes,Fixed 0x00)

SetFillMax

DistanceRsp 0x85 Status

(0x00_success) Reserved

(8Bytes,Fixed 0x00)

GetFillMax

DistanceReq 0x06 Reserved

(9Bytes,Fixed 0x00)

GetFillMax

DistanceRsp 0x86 FillMaxDistance

(2byte Unit:1mm) Reserved

(7Bytes,Fixed 0x00)

(4) Read device parameters FillMaxDistance

Downlink: 06B1000000000000000000

Device returns:

86B1138800000000000000 (device current configuration parameter)

Level Sensor Calibrate configuration example:

FPort:0x0E

Description CmdID SensorType PayLoad(Fix =9 Bytes)

SetGlobal

CalibrateReq 0x01

0x36

Channel(1Byte)

0_Channel1,

1_Channel2,etc

Multiplier

(2bytes,Unsigned) Divisor

(2bytes,Unsigned) DeltValue

(2bytes,Signed) Reserved

(2Bytes,Fixed 0x00)

SetGlobal

CalibrateRsp 0x81

Channel(1Byte)

0_Channel1,

1_Channel2,etc

Status

(1Byte,0x00_success) Reserved

(7Bytes,Fixed 0x00)

GetGlobal

CalibrateReq 0x02 Channel

(1Byte,0_Channel1,1_Channel2,etc) Reserved

(8Bytes,Fixed 0x00)

GetGlobal

CalibrateRsp 0x82

Channel(1Byte)

0_Channel1,

1_Channel2,etc

Multiplier

(2bytes,Unsigned) Divisor

(2bytes,Unsigned) DeltValue

(2bytes,Signed) Reserved

(2Bytes,Fixed 0x00)

ClearGlobal

CalibrateReq 0x03 Reserved

(10Bytes,Fixed 0x00)

ClearGlobal

CalibrateRsp 0x83 Status

(1Byte,0x00_success) Reserved

(9Bytes,Fixed 0x00)

(1)Set the calibration (GlobalCalibrate configuration):

If the distance between the device and the water R718PE detects is 490mm and the actual distance is 500mm, it means the

calibration we want to make is +10mm.

Channel 1= 00, Multiplier = 000A, Divisor = 0000, DeltValue=0001

Downlink：013600000A000000010000

Response：

8136000000000000000000（Configuration success）

8136010000000000000000（Configuration failure）

(2)Check whether the setting in (1) calibration

Downlink：0236000000000000000000

Response：

823600000A000000010000（Current configuration）

(3)Clear the setting

Downlink：0300000000000000000000

Response：

8300000000000000000000（Configuration success）

8301000000000000000000（Configuration failure）

Note:

1. When Multiplier is not 1, Calibration value = DeltValue*Multiplier.

2. When Divisor is not 1, Calibration value = DeltValue/Divisor.

3. The choices of the Channel would be 00-03 Channel

4. With different sensor type, it is forbidden to use that same Channel number.

5. This universal calibration supports calibration of positive and negative numbers.

Example for MinTime/MaxTime logic:

Example#1 based on MinTime = 1 Hour, MaxTime= 1 Hour, Reportable Change i.e. BatteryVoltageChange=0.1V

MaxTime MaxTime

Sleeping(MinTime) Sleeping(MinTime)

Note: MaxTime=MinTime. Data will only be report according to MaxTime (MinTime) duration regardless BatteryVoltageChange

value.

Example#2 based on MinTime = 15 Minutes, MaxTime= 1 Hour, Reportable Change i.e. BatteryVoltageChange= 0.1V.

MaxTime

Sleeping(MinTime) sleeping sleeping sleeping

0H 15th M 30th M 45th M 1H 2H

Wakes up and collects data

REPORTS 3.6V

Wakes up and collects data

REPORTS 3.6V

Wakes up and

collects data

3.6V

Does not report

Wakes up and

collects data

REPORT 3.6V

Wakes up and

collects data

REPORT 3.6V

Wakes up and

collects data

3.6V

Does not report

Wakes up and collects data

REPORTS 3.6V

Example#3 based on MinTime = 15 Minutes, MaxTime= 1 Hour, Reportable Change i.e. BatteryVoltageChange= 0.1V.

MaxTime

sleeping sleeping ...

0H 15th M 30th M 45th M 1H 1H 10th M 1H 25th M 1H 40th M 1H 55th M 2H 10th M

Notes :

1) The device only wakes up and performs data sampling according to MinTime Interval. When it is sleeping, it does not

collect data.

2) The data collected is compared with the last data reported. If the data variation is greater than the ReportableChange value,

the device reports according to MinTime interval. If the data variation is not greater than the last data reported, the device

reports according to MaxTime interval.

3) We do not recommend to set the MinTime Interval value too low. If the MinTime Interval is too low, the device wakes up

frequently and the battery will be drained soon.

4) Whenever the device sends a report, no matter resulting from data variation, button pushed or MaxTime interval, another

cycle of MinTime/MaxTime calculation is started.

Wakes up and

collects data

REPORTS 3.6V

Wakes up and

collects data

3.5V

Does not report

Wakes up and

collects data

3.5V

Does not report

Wakes up and

collects data

3.5V

Does not report

Wakes up and

collects data

3.5V

Does not report

Wakes up and

collects data

REPORTS

3.5V

Wakes up and

collects data

3.6V

Does not report

Users push the button,

REPORTS 3.5V.

Recalculate MaxTime.

Wakes up and collects

data

3.5V |3.5-3.6|=0.1

REPORTS 3.5V Wakes up and

collects data 3.5V

Does not report

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