Summary of Contents for DirekTronik LTC2
- Page 1 LTC2 - LoRaWAN Temperature Transmitter User Manual last modified by Xiaoling on 2023/02/02 14:47...
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Page 2: Table Of Contents
User Manual for LoRaWAN End Nodes - LTC2 - LoRaWAN Temperature Transmitter User Manual Table of Contents 1. Introduction ..................................6 1.1 What is LTC2 LoRaWAN Temperature Transmitter ....................6 1.2 Features ..................................6 1.3 Applications ................................... 7 1.4 Hardware Change log ..............................7 1.5 ... - Page 3 User Manual for LoRaWAN End Nodes - LTC2 - LoRaWAN Temperature Transmitter User Manual 9. Packing Info ..................................34 10. Support ................................... 35 Page 3 / 35 - last modified by Xiaoling on 2023/02/02 14:47...
- Page 4 User Manual for LoRaWAN End Nodes - LTC2 - LoRaWAN Temperature Transmitter User Manual Table of Contents: Page 4 / 35 - last modified by Xiaoling on 2023/02/02 14:47...
- Page 5 User Manual for LoRaWAN End Nodes - LTC2 - LoRaWAN Temperature Transmitter User Manual • 1. Introduction • 1.1 What is LTC2 LoRaWAN Temperature Transmitter • 1.2 Features • 1.3 Applications • 1.4 Hardware Change log • 1.5 Pin Definitions and Switch •...
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Page 6: Introduction
12 set resistors to make sure the accuracy measurement on wide range. LTC2 is LoRaWAN v1.0.3 compatible. Each LTC2 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 7: Applications
User Manual for LoRaWAN End Nodes - LTC2 - LoRaWAN Temperature Transmitter User Manual • 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 8 User Manual for LoRaWAN End Nodes - LTC2 - LoRaWAN Temperature Transmitter User Manual LTC2-SI Standard IP68 Probe Version • LTC2 with 1 x Standard IP68 PT100 probe. • Installation: Insert • Cable Length : 2m • PT100 Class : Class A •...
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Page 9: How To Use Ltc2
2. How to use LTC2? 2.1 Connect to PT100 sensors LTC2 has different probe option provided for ordering, if user has LTC2 with probe, just skip this step. If user want to connect to a 3 party PT100 probe, please see CONNECT A 3 PARTY PT100... - Page 10 User Manual for LoRaWAN End Nodes - LTC2 - LoRaWAN Temperature Transmitter User Manual The DLOS8 is already set to connect to TTN . Rest we need to is register the LTC2 to TTN v3: 2.3.1 Step 1: Create a device in TTN with the OTAA keys from LTC2 ...
- Page 11 User Manual for LoRaWAN End Nodes - LTC2 - LoRaWAN Temperature Transmitter User Manual Input the OTAA keys for LTC2. Each LTC2 is shipped with a sticker with the default device EUI as below: Page 11 / 35 - last modified by Xiaoling on 2023/02/02 14:47...
- Page 12 User Manual for LoRaWAN End Nodes - LTC2 - LoRaWAN Temperature Transmitter User Manual • Input these keys to device portal. • Choose the Frequency band for this end node. Page 12 / 35 - last modified by Xiaoling on 2023/02/02 14:47...
- Page 13 User Manual for LoRaWAN End Nodes - LTC2 - LoRaWAN Temperature Transmitter User Manual • Input APP Key in this page as well. Page 13 / 35 - last modified by Xiaoling on 2023/02/02 14:47...
- Page 14 User Manual for LoRaWAN End Nodes - LTC2 - LoRaWAN Temperature Transmitter User Manual Add payload formatter So TTNv3 knows how to parse the LTC2 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...
- Page 15 LTC2 is power off when ship from factory. Put a Jumper on JP2 to power on the device. After power on, LTC2 will auto join to TTN network via the LoRaWAN coverage by DLOS8. After join success, LTC2 will start to update message to IoT server.
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Page 16: Uplink Payload
Unix Time Request: 1: Request server downlink Unix time, 0 : N/A. In this mode, LTC2 will set this bit to 1 • every 10 day to request a time SYNC. (AT+SYNCMOD to set this) •... -
Page 17: Datalog Feature
2.5 Datalog Feature LTC2 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 18: Set Device Time
Once LTC2 Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and server will reply with (DeviceTimeAns) to send the current time to LTC2. If LTC2 fails to get the time from server, LTC2 will use the internal time and wait for next time request (AT+SYNCTDC to set time request period, default is 10 days). -
Page 19: Datalog Uplink Payload
Uplink Internal =10s，means LTC2 will send one packet every 10s. range 5~255s. 2.5.4 Datalog Uplink payload When server senser a datalog polling to LTC2, LTC2 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 20 User Manual for LoRaWAN End Nodes - LTC2 - 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 will uplink this payload.
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Page 21: Alarm Mode
User Manual for LoRaWAN End Nodes - LTC2 - LoRaWAN Temperature Transmitter User Manual 2.6 Alarm Mode LTC2 can monito the temperature in every CTTEMP time, when the temperature exceed the limit , it will uplink the sensor value immediately. -
Page 22: Enable Pt100 Channels
User Manual for LoRaWAN End Nodes - LTC2 - 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 23: Quit At Command
User Manual for LoRaWAN End Nodes - LTC2 - 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 24: Retrieve Data
User Manual for LoRaWAN End Nodes - LTC2 - LoRaWAN Temperature Transmitter User Manual AT Command: Command Example Function AT+SYNCTDC=0x0A Set SYNCTDC to 10 (0x0A), so the sync time is 10 days. Downlink Command: 0x29 0A // Same as AT+SYNCTDC=0x0A 3.8 Retrieve data... -
Page 25: Set Calibrate Value
Channel 2 rcable=0x012C/1000=0.300R Downlink Command: 0xA80128012C --> Same as AT+RCABLE=296,300 3.13 Poll Calibrate Value Feature: Poll Calibrate value. LTC2 will reply with this command send an uplink to server. AT Command: No AT Command. Downlink Command: Example: A901 End nodes will send racable config to server Like uplink payload: 010128012C ... -
Page 26: Print Last Few Data Entries
User Manual for LoRaWAN End Nodes - LTC2 - LoRaWAN Temperature Transmitter User Manual AT Command: AT+PDTA Downlink Command: No downlink commands for feature 3.15 Print last few data entries Feature: Print the last few data entries AT Command: AT+PLDTA... -
Page 27: Clear Flash Record
User Manual for LoRaWAN End Nodes - LTC2 - 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 28: Replace Battery
User Manual for LoRaWAN End Nodes - LTC2 - LoRaWAN Temperature Transmitter User Manual Minimum Working Voltage for the LTC2: LTC2: 3.0v ~ 3.6v 4.2 Replace Battery Any battery with 3.6v can be a replacement. We recommend to use Li-SOCl2 Battery. -
Page 29: Firmware Change Log And Upload Firmware
User Manual for LoRaWAN End Nodes - LTC2 - LoRaWAN Temperature Transmitter User Manual 5. Firmware Change Log and Upload Firmware User can use ST-Link v2 to upgrade firmware into LTC2 for bug fix or new features. The hardware connection for upgrade firmware is as below: ... -
Page 30: How To Connect A Customized Pt100 Cable
6.2 How to connect a customized PT100 cable? The LTC2 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 31 User Manual for LoRaWAN End Nodes - LTC2 - 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 31 / 35 - last modified by Xiaoling on 2023/02/02 14:47...
- Page 32 User Manual for LoRaWAN End Nodes - LTC2 - 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) .
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Page 33: What Is The Frequency Range Of Ltc2 Lora Part
Channel -1. 6.3 What is the frequency range of LTC2 LoRa part? Different LTC2 version supports different frequency range, below is the table for the working frequency and recommend bands for each model: Page 33 / 35 - last modified by Xiaoling on 2023/02/02 14:47... -
Page 34: How To Change The Lora Frequency Bands/Region
User Manual for LoRaWAN End Nodes - LTC2 - LoRaWAN Temperature Transmitter User Manual 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. - Page 35 User Manual for LoRaWAN End Nodes - LTC2 - LoRaWAN Temperature Transmitter User Manual • LTC2 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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