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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
