User Manual

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LTC2 LoRaWAN Temperature Transmitter 2 / 32
1. Introduction .............................................................................................................................. 4
1.1 What is LTC2 LoRaWAN Temperature Transmitter ..................................................................... 4
1.2 Features ...................................................................................................................................... 4
1.3 Applications ................................................................................................................................ 5
1.4 Hardware Change log ................................................................................................................. 5
1.5 Pin Definitions and Switch .......................................................................................................... 5
1.5.1 Jumper JP2 ( Power ON) ................................................................................................... 5
1.5.2 LED .................................................................................................................................... 5
1.5.3 PT100 Interfaces ............................................................................................................... 6
1.5.4 Reset Button ..................................................................................................................... 6
1.6 Probe Variant.............................................................................................................................. 6
2. How to use LTC2? ...................................................................................................................... 8
2.1 Connect to PT100 sensors .......................................................................................................... 8
2.2 How it works? ............................................................................................................................. 8
2.3 Quick guide to connect to LoRaWAN server (OTAA) ................................................................... 8
2.3.1 Step 1: Create a device in TTN with the OTAA keys from LTC2. ........................................ 8
2.3.2 Step 2: Power on LTC2 .................................................................................................... 12
2.4 Uplink Payload .......................................................................................................................... 13
2.4.1 Payload Analyze .............................................................................................................. 13
2.5 Datalog Feature........................................................................................................................ 14
2.5.1 Unix TimeStamp .............................................................................................................. 14
2.5.2 Set Device Time .............................................................................................................. 15
2.5.3 Poll sensor value ............................................................................................................. 16
2.5.4 Datalog Uplink payload ................................................................................................... 17
2.6 Alarm Mode.............................................................................................................................. 18
3. Configure LTC2 via AT Command or LoRaWAN Downlink ........................................................ 19
3.1 Set Transmit Interval Time........................................................................................................ 19
3.2 Enable PT100 channels ............................................................................................................. 19
3.3 Set External Sensor Mode ......................................................................................................... 20
3.4 Quit AT Command .................................................................................................................... 21
3.5 Set system time ........................................................................................................................ 21
3.6 Set Time Sync Mode ................................................................................................................. 21