Kiwi LAS-604V2 User manual

taifatech Confidential Documentation
LAS-604V2 User Manual
V.1.0.2

kiwitec Confidential Documentation
History
Date
Version
Revision Description
Writer
2019/08/05
V.1.0.0
First release
Liu Ken
2019/08/23
V1.0.1
Update report period
Chris Chuang
2019/9/12
V1.0.2
Adding new chapter - Warning
Chris Chuang
2020/01/06
V1.0.1
Add Certification and safety information
Lin Eden

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Table of Contents
1. Introduction........................................................................................................................................ 1
2. Installation.......................................................................................................................................... 2
3. Device Setup ....................................................................................................................................... 4
4. Report and Data Format ...................................................................................................................... 6
4.1. Mode A ..................................................................................................................................... 6
4.1.1. Temperature Report................................................................................................................... 7
4.1.2. Status Report.............................................................................................................................. 7
4.1.3. Temperature Alarm .................................................................................................................... 7
4.1.4. Downlink Setting Command....................................................................................................... 7
4.2. Mode B...................................................................................................................................... 8
4.2.1. Temperature Report (Uplink)..................................................................................................... 8
4.2.2. Remote Setting Command (Downlink)....................................................................................... 9
5. Firmware Upgrade..............................................................................................................................10
6. Warning .............................................................................................................................................11

kiwitec Confidential Documentation 1
1. Introduction
LAS-604V2 is a temperature sensor that utilizes LoRaWAN to periodically report temperature. The
temperature measurement is through PT100 probe. For forcing various requests of demand, LAS-604V2
supports two operation modes, mode A and mode B. Mode A is hourly report that temperature is reported or
recorded every hour. Mode B supports temperature measurement every 30 seconds, 1 minute or 2 minutes,
depending on setting. In addition, LAS-604V2 will retrieve date time for synchronous from server at boot up
which make sure the accuracy of report time period.
Technical Characteristics
Power
Operating Voltage
DC 3V
Battery Type
CR-AG Battery, 2400mAh x 2
Radio Frequency
Frequency
902.3 MHz to 914.9 MHz
Sensitivity
-137 dBm
Antenna
Embedded
Certification
FCC
LoRaWAN
Device Class
Class A
Activation
ABP
Temperature Sensor
Measurement Range
-60 ~ 200°C
Report Interval with
Measure Period
Mode A: Detect every 5 minutes, hourly report, reporting period can be 1~24
hour, default is 1 hour.
Mode B: Report every 10 min(20 records)/30 min(30 records)/60 min(30 records)
Environmental
Operating Temperature
-20℃~ +70℃
Storage Temperature
-30℃~ +70℃
Mechanism
Dimension
66.3 x 84.5 x 32 mm
Weight
120 g ±15g

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2. Installation
The first step to start to use LAS-604V2 is installing battery. LAS-604V2 can be opened by simultaneously
holding and pressing two places in red circle of following figure. A battery holder is inside LAS-604V2, as
Figure 2. The supply voltage of battery is 3V.
Figure 1 Open LAS-604V2
Figure 2 Battery Holder

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There is a wakeup button, SW1, which is used to wakeup LAS-604V2 when it enters deep sleep mode.
Figure 3 Wakeup Button
There is a jumper inside LAS-604V2 for selecting operation mode of LAS-604V2. Figure 4 is an example which
sets LAS-604V2 to Mode B.
Figure 4 Mode Selection Jumper
MODE B
MODE A

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3. Device Setup
Device Activation:
First step is created a node on LoRaWAN Network Server. The Device EUI, Application Session Key, and
Network Session Key will get from product supplier. Application must set to LAS-602/4 and Activation and
LoRaWAN Class should be set to ABP and Class A separately.
Note: Due to LAS-602/4 sending periodically report at each clock, the downlink window is recommended
to set to RX2 for preventing from data collision.
Figure 5 Device Activation
Gateway Notice:
Another notice is that make sure the Gateway frequencies setting is same as LAS-604V2. And the address of
packet forwarder setting must be set to LoRaWAN network server correctly.
Figure 6 Gateway Setting

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Temperature Report in Platform:
The temperature report is under application of LAS-602/4, as following figure shows.
Figure 7 LAS-602/4 Report

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4. Report and Data Format
4.1. Mode A
LAS-604V2 reports temperature and alarm through LoRaWAN’s uplink. By default, LAS-604V2 will send a
temperature report every hours. In addition to temperature report, LAS-604V2 will read temperature every 5
minutes by default and compare read value with allowable temperature range. If read temperature is out of
allowable temperature range, an alarm will be sent. Besides, the allowable temperature range can be set by
downlink command.
Except temperature and status report, a LoRaWAN MAC command, DeviceTimeReq, is sent from LAS-
604V2 to server for time synchronization. Figure 8 depicts the entire sequence from power on.
Figure 8 LAS-604V2 Sequence Diagram
There are 3 uplink will be sent by LAS-604V2, temperate report, status report and temperature alarm. The
format of these 3 reports are described at following.
LAS-604V2
Server
Confirmed Status Report
DeviceTimeReq
Device Ready Report
Sleep 5 minutes
DeviceTimeReq
Power On
If previous
DeviceTimeReq fails
Temperature
Detection
Sleep 5 minutes
Confirmed Alarm Report
If temperature out of
allowable range
Confirmed Temperature Report
Every hour
(Depend on Setting)
.
.
.
Confirmed Temperature Report
If DeviceTimeReq success
Retry 3 times

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4.1.1. Temperature Report
Temperature report is sent by LAS-604V2 at every predefined period. The period can be changed by downlink
command. The length of temperature report depends on how many temperature records in a single report.
4.1.2. Status Report
Status report is sent by LAS-604V2 at power-on and when LAS-604V2 getting downlink command.
4.1.3. Temperature Alarm
Temperature alarm is sent by LAS-604V2 when the read temperature is out of allowable range.
4.1.4. Downlink Setting Command
Downlink setting command is sent by server to LAS-604V2 for changing period of temperature report and
detection. Once LAS-604V2 getting a downlink command, it should send back a status report for
confirmation.
Battery
(1 Byte)
Temperature
(2 Bytes)
Temperature
(2 Bytes)
. . .
Temperature Report
FPort: 200
Battery: The most significant bit indicates low voltage.
The least significant 7 bits is battery voltage multiplying 10.
EX: 0x98 (1001 1000)low voltage and 2.4v
Temperature: Signed integer, big-endian, multiplies 10.
EX: 0x00 0xEC 23.6°C
Reserved
(1 Byte)
TX Period
(1 Byte)
Detection Period
(1 Byte)
Lowest Allowable
Temp. (2 Bytes)
Status Report
FPort: 201
Temperature: Signed integer, big-endian, multiplies 10.
EX: 0x00 0xEC 23.6°C
Highest Allowable
Temp. (2 Bytes)
TX Period: Unsigned integer presents period of temperature report in hour, can be 1 to 24.
Detection Period: Unsigned integer presents period of temperature detection in minute, can be 1 to 30.
Temperature
(2 Bytes)
Temperature Alarm
FPort: 202
Temperature: Signed integer, big-endian, multiplies 10.
EX: 0x00 0xEC 23.6°C
TX Period
(1 Byte)
Detection Period
(1 Byte)
Lowest Allowable
Temp. (2 Bytes)
Setting
Command
FPort: 201
Temperature: Signed integer, big-endian, multiplies 10.
EX: 0x00 0xEC 23.6°C
Highest Allowable
Temp. (2 Bytes)
TX Period: Unsigned integer presents period of temperature report in hour, can be 1 to 24.
Detection Period: Unsigned integer presents period of temperature detection in minute, can be 1 to 30.