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LTC2-SI2 LoRaWAN loT Sensor
last modified by Xiaoling
Table of Contents
1. Introduction ........................................................................................................................................................................ 6
1.1 What is LoRaWAN Temperature Transmitter ................................................................................................ 6
1.2 Features ........................................................................................................................................................................ 7
1.3 Applications ................................................................................................................................................................... 7
1.4 Hardware Change log ................................................................................................................................................... 7
1.5 Pin Definitions and Switch .......................................................................................................................................... 7
1.5.1 Jumper JP2 ( Power ON) ..................................................................................................................................... 7
1.5.2 LED .......................................................................................................................................................................... 7
1.5.3 PT100 Interfaces .................................................................................................................................................... 7
1.5.4 Reset Button ........................................................................................................................................................... 7
1.6 Probe Variant ............................................................................................................................................................. 7
2. How to use? ........................................................................................................................................................... 9
2.1 Connect to PT100 sensors ......................................................................................................................................... 9
2.2 How it works? ............................................................................................................................................................ 9
2.3 Quick guide to connect to LoRaWAN server (OTAA) ............................................................................................. 9
2.4 Uplink Payload ............................................................................................................................................................ 15
2.5 Datalog Feature ......................................................................................................................................................... 16
2.5.1 Unix TimeStamp .................................................................................................................................................. 16
2.5.2 Set Device Time ................................................................................................................................................... 17
2.5.3 Poll sensor value .................................................................................................................................................. 17
2.5.4 Datalog Uplink payload ....................................................................................................................................... 18
2.6 Alarm Mode ................................................................................................................................................................. 20
3. Configure via AT Command or LoRaWAN Downlink ...................................................................................... 20
3.1 Set Transmit Interval Time ....................................................................................................................................... 20
3.2 Enable PT100 channels ............................................................................................................................................ 21
3.3 Set External Sensor Mode ........................................................................................................................................ 21
3.4 Quit AT Command ..................................................................................................................................................... 22
3.5 Set system time .......................................................................................................................................................... 22
3.6 Set Time Sync Mode ................................................................................................................................................. 22
3.7 Set Time Sync Interval .............................................................................................................................................. 22
3.8 Retrieve data .............................................................................................................................................................. 23
3.9 Enable Alarm mode ................................................................................................................................................... 23
3.10 Alarm check time ..................................................................................................................................................... 23
3.11 Set Alarm Threshold ................................................................................................................................................ 24
3.12 Set Calibrate Value .................................................................................................................................................. 24
3.13 Poll Calibrate Value ................................................................................................................................................. 24
3.14 Print data entries base on page ............................................................................................................................. 25
3.15 Print last few data entries ....................................................................................................................................... 25
3.16 Clear Flash Record .................................................................................................................................................. 26
4. Battery & How to replace .............................................................................................................................................. 26
4.1 Battery Type ............................................................................................................................................................... 26
4.2 Replace Battery .......................................................................................................................................................... 27
4.3 Power Consumption Analyze ................................................................................................................................... 27
5. Firmware Change Log and Upload Firmware ............................................................................................................. 28
............................................................................................................................................................................................... 28
6. FAQ .................................................................................................................................................................................. 28
6.1 How to use AT Command to configure device ........................................................................................................ 28
6.2 How to connect a customized PT100 cable? ........................................................................................................ 29
6.3 What is the frequency range of LoRa part? ................................................................................................ 32
6.4 How to change the LoRa Frequency Bands/Region ............................................................................................. 33
7. Trouble Shooting ............................................................................................................................................................ 33
7.1 AT Command input doesn't work ............................................................................................................................ 33
8. Order Info ........................................................................................................................................................................ 33
Page 2 / 34 - last modified by Xiaoling on 2022/10/26 15:14
on 2022/10/26 15:14
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Related Manuals for Dragino LTC2-SI2
Summary of Contents for Dragino LTC2-SI2
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Page 1: Table Of Contents
LTC2-SI2 LoRaWAN loT Sensor last modified by Xiaoling on 2022/10/26 15:14 Table of Contents 1. Introduction ..................................6 1.1 What is LoRaWAN Temperature Transmitter ....................6 1.2 Features ..................................7 1.3 Applications ................................... 7 1.4 Hardware Change log ..............................7 1.5 ... -
Page 2: Introduction
12 set resistors to make sure the accuracy measurement on wide range. LTC2-SI2 is LoRaWAN v1.0.3 compatible. Each LTC2-SI2 is pre-load with a set of unique keys for LoRaWAN registration, register these keys to local LoRaWAN server and it will auto connect after power on. -
Page 3: Features
User Manual for LoRaWAN End Nodes - LTC2-SI2 - LoRaWAN Temperature Transmitter User Manual 1.2 Features • LoRaWAN v1.0.3 Class A • max: 2 x monitor temperature channels • Support 3 -wire PT-100 • 8500mAh Li-SOCI2 Battery • Firmware upgrade via console •... - Page 4 User Manual for LoRaWAN End Nodes - LTC2 - LoRaWAN Temperature Transmitter User Manual Model Photo Description LTC2-SI2 Standard IP68 Probe Version • LTC2-SI2 with 2 x Standard IP68 PT100 probe. • Installation: Insert • Cable Length : 2m • PT100 Class : Class A • Probe Dimension: 4*30mm •...
- Page 5 Food Safety Version LTC2-FSA LTC2-FSA with 1 x Food Safety PT100 probe. Installation: Insert Cable Length : 2m PT100 Class : Class A Probe Dimension: 4*150mm Measure Range: -50 ~ 200 °C Suitable Environment: Food temperature measurement LTC2-SI Standard IP68 Probe Version •...
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Page 6: How To Use
DLOS8 as LoRaWAN gateway. The DLOS8 is already set to connect to TTN . Rest we need to is register the LTC2-SI2 to TTN v3: 2.3.1 Step 1: Create a device in TTN with the OTAA keys from LTC2-SI2 Below is TTN screen shot:... - Page 7 User Manual for LoRaWAN End Nodes - LTC2-SI2 - LoRaWAN Temperature Transmitter User Manual • Create Application first. • Manually Add a LoRaWAN End Device device. Choose OTAA and MAC v1.0.3 Input the OTAA keys for LTC2-SI2. Each LTC2-SI2 is shipped with a sticker with the default device EUI as below: Page 10 / 34 - last modified by Xiaoling on 2022/10/26 15:14...
- Page 8 User Manual for LoRaWAN End Nodes - LTC2-SI2 - LoRaWAN Temperature Transmitter User Manual • Input these keys to device portal. • Choose the Frequency band for this end node. Page 11 / 34 - last modified by Xiaoling on 2022/10/26 15:14...
- Page 9 User Manual for LoRaWAN End Nodes - LTC2-SI2 - LoRaWAN Temperature Transmitter User Manual • Input APP Key in this page as well. Page 12 / 34 - last modified by Xiaoling on 2022/10/26 15:14...
- Page 10 User Manual for LoRaWAN End Nodes - LTC2-SI2 - LoRaWAN Temperature Transmitter User Manual Add payload formatter So TTNv3 knows how to parse the LTC2-SI2 upload value. The payload for TTN can be found at below link: ttps://github.com/dragino/dragino-end-node-decoder 2.3.2 Step 2: Power on LTC2-SI2...
- Page 11 User Manual for LoRaWAN End Nodes - LTC2-SI2 - LoRaWAN Temperature Transmitter User Manual LTC2-SI2 is power off when ship from factory. Put a Jumper on JP2 to power on the device. After power on, LTC2-SI2 will auto join to TTN network via the LoRaWAN coverage by DLOS8. After join success, LTC2-SI2 will start to update message to IoT server.
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Page 12: Uplink Payload
Unix Time Request: 1: Request server downlink Unix time, 0 : N/A. In this mode, LTC2-SI2 will set this bit • to 1 every 10 day to request a time SYNC. (AT+SYNCMOD to set this) •... -
Page 13: Datalog Feature
2.5 Datalog Feature LTC2-SI2 will auto get the time from LoRaWAN server during Join, and each uplink will then include a timestamp. When user want to retrieve sensor value, user can send a poll command from the IoT platform to ask sensor to send value in the required time slot. -
Page 14: Set Device Time
Once LTC2-SI2 Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and server will reply with (DeviceTimeAns) to send the current time to LTC2-SI2. If LTC2-SI2 fails to get the time from server, LTC2-SI2 will use the internal time and wait for next time request (AT+SYNCTDC to set time request period, default is 10 days). -
Page 15: Datalog Uplink Payload
Uplink Internal =10s，means LTC2-SI2 will send one packet every 10s. range 5~255s. 2.5.4 Datalog Uplink payload When server senser a datalog polling to LTC2-SI2 will reply with one or more uplink messages as reply. Each uplink message includes multiply data entries value. Each entry has the same payload format as normal uplink... - Page 16 User Manual for LoRaWAN End Nodes - LTC2-SI2 - LoRaWAN Temperature Transmitter User Manual If user send below downlink command: 3160A06E9060A098C00A Where : Start time: 60A06E90 = time 21/5/16 01:00:00 Stop time: 60A098C0 = time 21/5/16 04:00:00 LTC2-SI2 will uplink this payload.
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Page 17: Alarm Mode
User Manual for LoRaWAN End Nodes - LTC2-SI2 - LoRaWAN Temperature Transmitter User Manual 2.6 Alarm Mode LTC2-SI2 can monito the temperature in every CTTEMP time, when the temperature exceed the limit , it will uplink the sensor value immediately. -
Page 18: Enable Pt100 Channels
User Manual for LoRaWAN End Nodes - LTC2-SI2 - LoRaWAN Temperature Transmitter User Manual Downlink Command: 0x01 Format: Command Code (0x01) followed by 3 bytes time value. If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01. -
Page 19: Quit At Command
User Manual for LoRaWAN End Nodes - LTC2-SI2 - LoRaWAN Temperature Transmitter User Manual Downlink Command: 0xA2 Total bytes: 2 bytes Example: • 0xA201: same as AT+EXT=1 3.4 Quit AT Command Feature: Quit AT Command mode, so user need to input password again before use AT Commands. -
Page 20: Retrieve Data
User Manual for LoRaWAN End Nodes - LTC2-SI2 - LoRaWAN Temperature Transmitter User Manual Feature: Define System time sync interval. SYNCTDC default value: 10 days. AT Command: Command Example Function AT+SYNCTDC=0x0A Set SYNCTDC to 10 (0x0A), so the sync time is 10 days. -
Page 21: Set Alarm Threshold
User Manual for LoRaWAN End Nodes - LTC2-SI2 - LoRaWAN Temperature Transmitter User Manual 3.11 Set Alarm Threshold Feature: Set Alarm Threshold. AT Command: AT+ARTEMP Total bytes: 9 Unit: ℃ Example: A7FF380320FF380320 AT+ARTEMP=-200,800,-200,800 A7000A0064000A0065 AT+ARTEMP=10,100,10,101 Channel 1 operating temp:10~100 Channel 2 operating temp:10~101... -
Page 22: Print Data Entries Base On Page
User Manual for LoRaWAN End Nodes - LTC2-SI2 - LoRaWAN Temperature Transmitter User Manual 3.14 Print data entries base on page Feature: Print the sector data from start page to stop page (max is 400 pages). AT Command: AT+PDTA Downlink Command: No downlink commands for feature 3.15 Print last few data entries... -
Page 23: Clear Flash Record
User Manual for LoRaWAN End Nodes - LTC2-SI2 - LoRaWAN Temperature Transmitter User Manual Downlink Command: No downlink commands for feature 3.16 Clear Flash Record Feature: Clear flash storage for data log feature. AT Command: AT+CLRDTA Command Example Function Response... -
Page 24: Replace Battery
4.3 Power Consumption Analyze Dragino Battery powered product are all runs in Low Power mode. We have an update battery calculator which base on the measurement of the real device. User can use this calculator to check the battery life and calculate the battery life if want to use different transmit interval. -
Page 25: Firmware Change Log And Upload Firmware
6. FAQ 6.1 How to use AT Command to configure LTC2-SI2 supports AT Command set. User can use a USB to TTL adapter plus the Program Cable to connect to LTC2-SI2 for using AT command, as below. Connection: • USB to TTL GND <--> LTC2-SI2 GND •... -
Page 26: How To Connect A Customized Pt100 Cable
6.2 How to connect a customized PT100 cable? The LTC2-SI2 has two channels means it can connect 2 x PT100 cables. Besides use the PT100 cables provided by Dragino, User can connect their PT100 probes. When connect to a user PT100 probe, we recommend that user do a calibration to eliminate the effect from the cables so to get the best accuracy. - Page 27 User Manual for LoRaWAN End Nodes - LTC2-SI2 - LoRaWAN Temperature Transmitter User Manual We know that the Multimeter has a shortcut resistance 0.002 ohm. Step 2: Measure the resistance between the two shorted wires of PT100 Probe. Page 30 / 34 - last modified by Xiaoling on 2022/10/26 15:14...
- Page 28 User Manual for LoRaWAN End Nodes - LTC2-SI2 - LoRaWAN Temperature Transmitter User Manual As example, in this step, we check the shorted wire (both red) with 0.594 ohm, So we know that each wire of PT100 has (0.594-0.002)/2=0.296R (Where 0.002 is the value we got from step 1) .
- Page 29 Channel -1. 6.3 What is the frequency range of LTC2-SI2 LoRa part? Different LTC2-SI2 version supports different frequency range, below is the table for the working frequency and recommend bands for each model: Page 32 / 34 - last modified by Xiaoling on 2022/10/26 15:14...
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Page 30: How To Change The Lora Frequency Bands/Region
6.4 How to change the LoRa Frequency Bands/Region You can follow the instructions for how to upgrade image. When downloading the images, choose the required image file for download. 7. Trouble Shooting 7.1 AT Command input doesn't work In the case if user can see the console output but can't type input to the device. Please check if you already ENTER ENTER include the... - Page 31 User Manual for LoRaWAN End Nodes - LTC2-SI2 - LoRaWAN Temperature Transmitter User Manual • LTC2-SI2 LoRaWAN Temperature Transmitter x 1 Dimension and weight: • Device Size: cm • Device Weight: g • Package Size / pcs : cm • Weight / pcs : g 10.
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