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LT Series LoRa IO controller User Manual 3 / 42
1. Introduction..............................................................................................................................5
1.1 What is LT Series I/O Controller..................................................................................................5
1.2 Specifications..............................................................................................................................6
1.3 Features......................................................................................................................................7
1.4 Applications................................................................................................................................7
1.5Hardware Variants .....................................................................................................................8
1.6 Firmware Change log .................................................................................................................8
2. Power ON Device ....................................................................................................................10
3. Operation Mode ..................................................................................................................... 11
3.1 How it works?...........................................................................................................................11
3.2 Example to join LoRaWAN network..........................................................................................11
3.3 Uplink Payload..........................................................................................................................13
There are five working modes on LT for different type application: .............................................13
3.3.1 AT+MOD=1, 2ACI+2AVI ................................................................................................13
3.3.2 AT+MOD=2, (Double DI Counting) ..................................................................................14
3.3.3 AT+MOD=3, Single DI Counting + 2 x ACI........................................................................15
3.3.4 AT+MOD=4, Single DI Counting + 1 x Voltage Counting..................................................16
3.3.5 AT+MOD=5, Single DI Counting + 2 x AVI + 1 x ACI .........................................................16
3.3.6 Payload Decoder .............................................................................................................17
3.4 Downlink Payload.....................................................................................................................18
3.5 Integrate with Mydevice...........................................................................................................22
3.6 Interface Detail.........................................................................................................................25
3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) .......................................25
3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ..................................................................26
3.6.3 Digital Output Port: DO1/DO2 /DO3 ..............................................................................27
3.6.4 Analog Input Interface ....................................................................................................27
3.6.5 Relay Output ...................................................................................................................27
3.7 LEDs Indicators .........................................................................................................................29
4. Use AT Command....................................................................................................................30
4.1 Access AT Command.................................................................................................................30
4.2 Common AT Command Sequence.............................................................................................32
4.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ......................................................32
4.2.2 Single-channel ABP mode (Use with LG01/LG02)...........................................................32
