netvox R718EB User manual

Wireless Tilt Angle Sensor
R718EB
User Manual
Copyright©Netvox Technology Co., Ltd.
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.
Wireless Tilt Angle Sensor
Model: R718EB

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Table of Content
1. Introduction ..................................................................................................................................... 3
2. Appearance ...................................................................................................................................... 4
3. Main Features .................................................................................................................................. 4
4. Application ...................................................................................................................................... 4
5. Set up Instruction............................................................................................................................. 5
6. Data Report ..................................................................................................................................... 6
6.1 ActiveThreshold and InActiveThreshold .................................................................................. 7
6.2 Calibration ................................................................................................................................ 7
6.3 The X, Y, Z axis direction of R718EB ...................................................................................... 7
5.4 Example of ReportDataCmd..................................................................................................... 8
6.5 Example of Data Configuration ................................................................................................ 9
6.6 Example of GlobalCalibrateCmd............................................................................................ 10
6.7 Example for MinTime/MaxTime logic ....................................................................................11
7. Installation..................................................................................................................................... 13
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. Description of Waterproof Grade .................................................................................................. 14
10. Important Maintenance Instruction.............................................................................................. 15

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1. Introduction
R718EB is the Class A device based on the LoRaWANTM protocol of Netvox. The device detects the tilt angle of three axes.
When the device moves or vibrates beyond the set threshold value, and after the device is stationary, if the angle variation of
any one of the three axes is greater or equal to than the AngleChange, it will immediately report the current tilt angle of the X,
Y, and Z axes and the battery voltage. The device is compatible with LoRaWAN protocol.
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.

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2. Appearance
3. Main Features
⚫Apply SX1276 wireless communication module
⚫2 sections ER14505 3.6V Lithium AA size battery in parallel
⚫Built-in tilt measurement chip
⚫The base is attached with a magnet that can be attached to a ferromagnetic material object
⚫Protection level IP65/IP67 (optional)
⚫Compatible with LoRaWANTM Class A
⚫Frequency hopping spread spectrum technology
⚫Available third-party platform: Actility / ThingPark, TTN, MyDevices/Cayenne
⚫Low power consumption and long battery life
Battery Life:
⁻Please refer to web: http://www.netvox.com.tw/electric/electric_calc.html
⁻At this website, users can find battery life time for variety models at different configurations.
1. Actual range may vary depending on environment.
2. Battery life is determined by sensor reporting frequency and other variables.
4. Application
⚫Pillars, telegraph poles and other applications such as tilt sensing, angle detection, direction identification, etc.
⚫Industrial equipment
⚫Other
Indicator
Function Key

5
5. Set up Instruction
On/Off
Power on
Insert batteries. (Users may need a 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 second, and the green indicator flashes 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. The first 5 seconds 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.
The green indicator stays on for 5 seconds: success
The green indicator remains off: fail
Had joined the network
Turn on the device to search the previous network.
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 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

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6. Data Report
Data report configuration and sending period are as following:
Min Interval
(Unit:second)
Max Interval
(Unit:second)
Reportable Change
Current Change≥
Reportable Change
Current Change＜
Reportable Change
Any number between
1~65535
Any number between
1~65535
Can not be 0.
Report
per Min Interval
Report
per Max Interval
The device will send a version package report immediately after power-on. After it is powered on, and the auto-calibration
is executed for one minute (Do not move the device), the device will report the attribute data.
The device sends data in the default configuration before any configuration is done.
Default setting:
MaxTime:0x0E10 (3600s)
MinTime: 0x0E10 (3600s) // It is recommended that MinTime is not less than 1min.
(By default, the current voltage and three-axis tilt value are detected once every Min Interval.)
Battery Change: 0x01 (0.1v)
Angle Change: 0xC8 (20°)
ActiveThreshold: 0x0003 // Range:0x0003-0x00FF
Inactivetime: 0x05 (5s) // Range:0x03-0xFF
R718EB Reporting Requirements:
When the vibration of the device exceeds the value of ActiveThreshold (the default value is 3, which can be modified),
it will start to detect, and when the angle of any axis is greater than or equal to AngleChange, the three-axis tilt angle,
battery voltage, and temperature will be reported after the device stops vibrating for 5 seconds.
To detect the next vibration, InActiveTime needs to be longer than 5 seconds (the number of seconds can be modified)
If the vibration continues during the process, the timing will restart.
Calibration:
1. The device must be placed horizontally during automatic calibration.
2. After calibration, the angles of X, Y, Z axes are about 0°, 0°, -90° when the device is placed horizontally.
3. There will be no operation when pressing the button before the automatic calibration is completed.
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 minimum time.
Please refer Netvox LoRaWAN Application Command document and Netvox Lora Command Resolver
http://cmddoc.netvoxcloud.com/cmddoc to resolve uplink data.

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6.1 ActiveThreshold and InActiveThreshold
Formula
Active Threshold = Critical value ÷ 9.8÷ 0.0625
The gravitational acceleration at standard atmospheric pressure is 9.8 m/s2
The scale factor of the threshold is 62.5 mg.
Active Threshold
Active Threshold can be changed by ConfigureCmd.
Active Threshold range is 0x0003-0x00FF (default is 0x0003);
Inactive time
Inactivetime can be changed by ConfigureCmd.
Inactivetime means that the acceleration variation during the stationary time is less than the set
Inactivetime Threshold to declare stationary.
Inactivetime range is 0x03-0xFF (default is 0x05)
Example
Assuming that the critical value is set to 10m/s2, the Active Threshold to be set is 10/9.8/0.0625=16.32
Active Threshold to be set integer as 16.
6.2 Calibration
The accelerometer is a mechanical structure that contains components that can move freely.
These moving parts are very sensitive to mechanical stress, far beyond solid-state electronics.
The 0g offset is an important accelerometer indicator because it defines the baseline used to measure acceleration.
After installing R718EB, turn on the device and wait for the device join the network 1 minute, the device will automatically
offset the calibration.
If the device installation position moves, you need to power off the device 1 minute and restart turn on.
6.3 The X, Y, Z axis direction of R718EB

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5.4 Example of ReportDataCmd
FPort：0x06
Bytes
1
1
1
Var(Fix=8 Bytes)
Version
DeviceType
ReportType
NetvoxPayLoadData
Version–1 byte –0x01——the Version of NetvoxLoRaWAN Application Command Version
DeviceType–1 byte –Device Type of Device
The devicetype is listed in Netvox LoRaWAN Application Devicetype doc
ReportType – 1 byte –the presentation of the NetvoxPayLoadData，according the devicetype
NetvoxPayLoadData– Fixed bytes (Fixed =8bytes)
Device
Device
Type
Report
Type
NetvoxPayLoadData
R718EB
0xC8
0x00
SoftwareVersion(1Byte)
Eg.0x0A—V1.0
HardwareVersion
(1Byte)
DateCode
(4Bytes,eg0x20170503)
Reserved
(2Bytes,fixed 0x00)
0x01
Battery
(1Byte,unit:0.1V)
AngleX
(2Byte, Signed
Value ,Unit:0.1°)
AngleY
(2Byte, Signed
Value ,Unit:0.1°)
AngleZ
(2Byte, Signed
Value ,Unit:0.1°)
Reserved
(1Byte,fixed
0x00)
Example 1 of Uplink: 01C8012400020003FC8100
1st byte (01): Version
2nd byte (C8): DeviceType 0xC8 － R718EB
3rd byte (01): ReportType
4th byte (24): Battery－3.6v , 24 Hex=36 Dec 36*0.1v=3.6v
5th 6th byte (0002): Angle X －0.2°, 2*0.1°=0.2°
Tips
1. Battery Voltage:
The voltage value is bit 0 ~ bit 6, bit 7=0 is normal voltage, and bit 7=1 is low voltage.
Battery=0xA0, binary=1010 0000, if bit 7= 1, it means low voltage.
The actual voltage is 0010 0000 = 0x20 = 32, 32*0.1v =3.2v
2. Version Packet:
When Report Type=0x00 is the version packet, such as 01C8000A0B202005200000, the firmware version is 2020.05.20
3. Data Packet:
When Report Type=0x01 is data packet.
4. Signed Value:
When the value is negative, 2's complement should be calculated.

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7th 8th byte (0003): Angle Y －0.3°, 3*0.1°=0.3°
9th 10th byte (FC81): Angle Z －- 89.5°, 0x10000 Hex -0xFC81 Hex = 37F Hex, 37F Hex=895 Dec -895*0.1°= -89.5°
11th byte (00): Reserved
6.5 Example of Data Configuration
FPort：0x07
Bytes
1
1
Var(Fix =9 Bytes)
CmdID
DeviceType
NetvoxPayLoadData
CmdID–1 byte
DeviceType–1 byte –Device Type of Device
NetvoxPayLoadData– var bytes (Max=9bytes)
Description
Device
CmdI
D
Device
Type
NetvoxPayLoadData
Config
ReportReq
R718
EB
0x01
0xC8
MinTime
(2bytes, Unit: s)
MaxTime
(2bytes, Unit: s)
BatteryChange
(1byte, Unit: 0.1v)
AngleChange
(2byte, Unit: 0.1°)
Reserved
(2Bytes, Fixed
0x00)
Config
ReportRsp
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)
AngleChange
(2byte, Unit: 0.1°)
Reserved
(2Bytes, Fixed
0x00)
SetActive
ThresholdReq
0x03
Threshold
(2Bytes)
InActivetime
(1Bytes, Unit: 1s)
Reserved
(5Bytes, Fixed 0x00)
SetActive
ThresholdRsp
0x83
Status
(0x00_success)
Reserved
(8Bytes, Fixed 0x00)
GetActive
ThresholdReq
0x04
Reserved
(9Bytes, Fixed 0x00)
GetActive
ThresholdRsp
0x84
Threshold (2Bytes)
InActivetime
(1Bytes, Unit: 1s)
Reserved
(5Bytes, Fixed 0x00)
(1)Configure device parameters MinTime = 2 min, MaxTime = 2 min, BatteryChange = 0.1v, AngleChange = 5°
Downlink: 01C8007800780100320000 78(Hex) = 120(Dec) ; 0032(Hex) = 50(Dec)
Device returns:

10
81C8000000000000000000 (configuration is successful)
81C8010000000000000000 (configuration failed)
(2)Read device parameters
Downlink: 02C8000000000000000000
Device returns:82C8007800780100320000 (current device parameters)
(3)Assuming that the Active Threshold is set to 10m/s2, the value to be set is 10/9.8/0.0625=16.32,and the last value obtained is
an integer and is configured as 16.
Configure device parameters ActiveThreshold=16, InActiveTime=5
Downlink: 03C8001005000000000000 0010(Hex) = 16(Dec)
Device returns:83C8000000000000000000 (configuration is successful)
83C8010000000000000000 (configuration failed)
(4)Read device parameters
Downlink: 04C8000000000000000000
Device returns:84C8001005000000000000 (device current parameter)
6.6 Example of GlobalCalibrateCmd
FPort： 0x0E
Description
Cmd
ID
Sensor
Type
PayLoad(Fix =9 Bytes)
SetGlobal
CalibrateReq
0x01
0x37
(Angle Sensor)
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
0x03
Reserved

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CalibrateReq
(10Bytes,Fixed 0x00)
ClearGlobal
CalibrateRsp
0x83
Status
(1Byte,0x00_success)
Reserved
(9Bytes,Fixed 0x00)
R718EB angle unit: 0.1°
The calibration channel corresponding to each angle: AngleX = 00, AngleY= 01, AngleZ = 02
Example 1. Sensor detects Angle X value = 0° > Actual = 1° // +1°
Downlink: 01370000010001000A0000
Cmd ID (01) –SetGlobal CalibrateReq
Sensor type (37) – Angle sensor
Channel (00) – Channel 1
Multiplier (0001) – not used in this case, fill in ‘0001’
Divisor (0001) – not used in this case, fill in ‘0001’
Delt Value (000A) – 1°, 000A Hex = 10 Dec, 10*0.1°= 1°
Example 2. Sensor detects Angle Y value = 0° > Actual = -1° // -1°
Downlink: 01370100010001FFF60000
Cmd ID (01) –SetGlobal CalibrateReq
Sensor type (37) – Angle sensor
Channel (01) – Channel 2
Multiplier (0001) – not used in this case, fill in ‘0001’
Divisor (0001) – not used in this case, fill in ‘0001’
Delt Value FFF6) – -1°, FFF6 Hex = -10 Dec, -10*0.1°= -1°
Example 3. Clear Global Calibrate
Downlink: 0300000000000000000000
6.7 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)
Wake up and collects data
REPORTS 3.6V
Wakes up and collects data
REPORTS 3.6V
Wakes up and collects data
REPORTS 3.6V

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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
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
3.6V
Does not report
Wakes up and
collects data
3.6V
Does not report
Wakes up and
collects data
3.6V
Does not report
Wakes up and
collects data
REPORTS 3.6V
Wakes up and
collects data
REPORT 3.6V
Wakes up and
collects data
REPORTS 3.6V
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
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.

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7. Installation
The device needs to be installed when it is powered off and the detected building/pole is in static status. It is recommended to
install the device horizontally. After the fixation is completed, please power on the device. The device performs offset calibration
after it has joined the network for one minute. The device needs a period of time to collect the three-axis tilt angle and battery
voltage of the detected building/telephone pole, and to make reference for the activity threshold, the inactive time, and whether
the building/telephone pole is tilted. The specific configuration depends on the actual situation.
Note:
After the device is turned on, it must be placed horizontally for one minute before using.
(The purpose is that the device will automatically perform the offset calibration to reduce the error of the detection result.)
8. Information about Battery Passivation
Many of Netvox devices are powered by 3.6V ER14505 Li-SOCl2 (lithium-thionyl chloride) batteries that offer many
advantages including low self-discharge rate and high energy density.
However, primary lithium batteries like Li-SOCl2 batteries will form a passivation layer as a reaction between the lithium
anode and thionyl chloride if they are in storage for a long time or if the storage temperature is too high. This lithium chloride
layer prevents rapid self-discharge caused by continuous reaction between lithium and thionyl chloride, but battery passivation
may also lead to voltage delay when the batteries are put into operation, and our devices may not work correctly in this situation.
As a result, please make sure to source batteries from reliable vendors, and it is suggested that if the storage period is more
than one month from the date of battery production, all the batteries should be activated.
If encountering the situation of battery passivation, users can activate the battery to eliminate the battery hysteresis.
ER14505 Battery Passivation:
8.1 To determine whether a battery requires activation
Connect a new ER14505 battery to a resistor in parallel, and check the voltage of the circuit.
If the voltage is below 3.3V, it means the battery requires activation.
8.2 How to activate the battery
a. Connect a battery to a resistor in parallel
b. Keep the connection for 5~8 minutes
c. The voltage of the circuit should be ≧3.3, indicating successful activation.
Brand
Load Resistance
Activation Time
Activation Current
NHTONE
165 Ω
5 minutes
20mA

14
RAMWAY
67 Ω
8 minutes
50mA
EVE
67 Ω
8 minutes
50mA
SAFT
67 Ω
8 minutes
50mA
Note:
If you buy batteries from other than the above four manufacturers, then the battery activation time, activation current, and
required load resistance shall be mainly subject to the announcement of each manufacturer.
9. Description of Waterproof Grade
1: According to Enclosure Protection Class
This standard is equivalent to IEC 60529:2001 Degrees of Protection Provided by Enclosures (IP Code) (English version)
2: The test method of IP65 waterproof grade is:
Spray the device in all directions under 12.5L/min water flow for 3min, and the internal electronic function is normal.
The test method of IP67 waterproof grade is:
The device is immersed in 1m deep water for 30min, and the internal electronic function is normal.
IP65, dust-proof and to prevent damage caused by water from nozzles in all directions from invading electrical appliances. It
can be used in general indoor environment and sheltered outdoor environment. It is not suitable for use in environments with
high water pressure, high temperature and high humidity, such as long time direct sunlight outdoors and possible direct
exposure to rainstorm. If it is really necessary to install in harsh environments, it is recommended to add sunscreen and
rainproof shields when installing.
Case I (face down with LED and buttons) Case II (installed under the rain shield)

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10. Important Maintenance Instruction
Kindly pay attention to the following in order to achieve the best maintenance of the product:
• Keep the device dry. Rain, moisture, or any liquid might contain minerals and thus corrode electronic circuits. If the device gets
wet, please dry it completely.
• Do not use or store the device in dusty or dirty environment. It might damage its detachable parts and electronic components.
• Do not store the device under excessive heat condition. High temperature can shorten the life of electronic devices, destroy
batteries, and deform or melt some plastic parts.
• Do not store the device in places that are too cold. Otherwise, when the temperature rises to normal temperature, moisture will
form inside, which will destroy the board.
• Do not throw, knock or shake the device. Rough handling of equipment can destroy internal circuit boards and delicate
structures.
• Do not clean the device with strong chemicals, detergents or strong detergents.
• Do not apply the device with paint. Smudges might block in the device and affect the operation.
• Do not throw the battery into the fire, or the battery will explode. Damaged batteries may also explode.
All of the above applies to your device, battery and accessories.
If any device is not working properly, please take it to the nearest authorized service facility for repair.