Netvox R718J2 User manual

Wireless 2-Input Dry Contact Interface

Model: R718J2

Wireless 2-Input

Dry Contact Interface

R718J2

User Manual

Table of Content

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

2. Appearance.................................................................................................3

3. Main Feature ..............................................................................................3

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

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

5.1 Example of ReportDataCmd ..............................................................5

5.2 Example of ConfigureCmd.................................................................7

5.3 Example for MinTime/MaxTime logic ..............................................8

6. Installation................................................................................................10

7. Information about Battery Passivation ....................................................11

7.1 To determine whether a battery requires activation .........................11

7.2 How to activate the battery...............................................................11

8. Important Maintenance Instruction..........................................................12

1. Introduction

R718J2 is a ClassA external 2-way dry contact device based on LoRaWAN open protocol of Netvox. It can externally connect

various switches, buttons, relays and reed switch output. It can detect the closing or disconnecting signal of dry contact and is

compatible with LoRaWAN protocol.

LoRa wireless technology:

LoRa is a wireless communication technology dedicated to long-distance low-power consumption. Its spread-spectrum

modulation method greatly increases the communication distance compared with other communication methods, and can be

widely used in long-distance low-rate IoT wireless communication fields in various occasions. Such as automatic meter reading,

building automation equipment, wireless security systems, industrial monitoring and control. It has the characteristics of small

size, low power consumption, long transmission distance and strong anti-interference ability.

LoRaWAN:

LoRaWAN defines an end-to-end standard specification using LoRa technology to ensure interoperability between devices and

gateways from different vendors.

2. Appearance

3. Main Feature

⚫Apply SX1276 wireless communication module

⚫2 ER14505 lithium batteries (3.6V / section) parallel power supply

⚫Dry contact detection

⚫The base is attached with a magnet that can be attached to a ferromagnetic material object

⚫Protection class IP65

⚫Compatible with LoRaWANTM Class A

⚫Frequency hopping spread spectrum

⚫Applicable to third-party platforms: Actility/ThingPark, TTN, MyDevices/Cayenne

⚫Low power consumption and long battery life

Indicator

Function Key

Dry Contact 1

Dry Contact 2

4. 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 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. Five 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

Fail to Join the Network

Suggest to check the device verification information on the gateway or consult your platform

server provider.

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

Data report configuration and sending period are as following:

5.1 Example of ReportDataCmd

FPort：0x06

Bytes

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)

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

When the device is turned on, it will immediately send a version package.

Data will be reported once per hour by default setting.

Default Setting:

Maximum Time: 0x0E10 (3600s)

Minimum Time: 0x0E10 (3600s) // Detect the current voltage value every 3600s by default setting

Battery Change: 0x01 (0.1V)

LastMessageResendTime: 0x00

Dry Contact Detection Trigger:

When the dry contact is connected, the data status bit is “1”.

When the dry contact is disconnected, the data status bit is “0”.

Last Message Resend Time Function:

Resendtime = 0x00 or 0xFF, send the current dry contact state

Resendtime = 0x03 to 0xFE, send the current dry contact state, and resend the dry contact state after 3-254s

*The function of Resendtime is supported by the firmware version after 2020/05/08 version

Note:

The device send data cycle depends on real burning configuration.

The interval between two reports must be the minimum interval.

Device

Type

Report

Type

NetvoxPayLoadData

R718J2

0x43

0x00

SoftwareVersion(1Byte)

Eg.0x0A—V1.0

HardwareVersion

(1Byte)

DateCode

(4Bytes,eg0x20170503)

Reserved

(2Bytes,fixed 0x00)

0x01

Battery

(1Byte,unit:0.1V)

Status

(1Byte 0:off 1:on)

Status 2

(1Byte 0:off 1:on)

Reserved

(5Bytes,fixed 0x00)

Example 1 of Uplink: 0143012401000000000000

1st byte (01): Version

2nd byte (43): DeviceType 0x43 － R718J2

3rd byte (01): ReportType

4th byte (24): Battery－3.6v , 24(HEX)=36(DEC),36*0.1v=3.6v

5th byte (01): Status－on

6th byte (00): Status－off

7th ~ 11th byte (0000000000): Reserved

Example 2 of Uplink: 0143019F00010000000000

1st byte (01): Version

2nd byte (43): DeviceType 0x43 － R718J2

3rd byte (01): ReportType

4th byte (9F): Battery－3.1v , 1F (HEX)=31(DEC),31*0.1v=3.1v

// The bit 7=0 represent normal battery voltage, bit 7=1 represent low battery

5th byte (00): Status－off

6th byte (01): Status－on

7th ~ 11th byte (0000000000): Reserved

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 0143000A0B202005200000, the firmware version is 2020.05.20

3. Data Packet:

When Report Type=0x01 is data packet.

5.2 Example of ConfigureCmd

FPort：0x07

Bytes

Var (Fix =9 Bytes)

CmdID

DeviceType

NetvoxPayLoadData

CmdID–1 byte

DeviceType–1 byte –Device Type of Device

NetvoxPayLoadData– var bytes (Max=9bytes)

Description

Device

Cmd

Device

Type

NetvoxPayLoadData

Config

ReportReq

R718J2

0x01

0x43

MinTime

(2bytes Unit: s)

MaxTime

(2bytes Unit: s)

BatteryChange

(1byte Unit:0.1v)

Reserved

(4Bytes, 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)

Reserved

(4Bytes, Fixed 0x00)

(1)Configure R718J2 device parameter MinTime = 1min、MaxTime = 1min、BatteryChange = 0.1v

Downlink: 0143003C003C0100000000

Device Return:

8143000000000000000000 (configuration success)

8143010000000000000000 (configuration failure)

(2)Read R718J2 device parameter

Downlink: 0243000000000000000000

Device Return:

8243003C003C0100000000 (device current parameter)

SetLastMessage

ResendtimeReq

ALL(0xFF)

only used in

contact switch

device type

0x1F

0xFF

Resendtime(1Byte) Unit:1s , Range:3-254s

when 0 or 255 no resend, default is no resend

Reserved

(8Bytes,Fixed 0x00)

SetLastMessage

ResendtimeRsp

0x9F

Status

(0x00_success)

Reserved

(8Bytes,Fixed 0x00)

GetLastMessage

ResendtimeReq

0x1E

Reserved

(9Bytes,Fixed 0x00)

GetLastMessage

ResendtimeRsp

0x9E

Resendtime(1Byte) Unit:1s , Range:3-254s

when 0 or 255 no resend,default is no resend

Reserved

(8Bytes,Fixed 0x00)

Set resend time =5s

Downlink:1FFF050000000000000000

Response:

9FFF000000000000000000（Configuration success）

9FFF010000000000000000（Configuration failure）

*The function of Resendtime is supported by the firmware version after 2020/05/08 version

5.3 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

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

Wake up and collects data

REPORTS 3.6V

Wakes up and collects data

REPORTS 3.6V

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 |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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