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LT22222-L
Dragino LT22222-L User Manual
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L
T Series LoRa IO con
troller User Manual
9
/
42
Image
v1.3
Add clear c
ountin
g fea
ture vi
a Downlink
Impro
ve Downl
ink type co
de
0x
03 t
o support c
ontr
ol RO
1 or RO2
separat
ely
.
Add Downlin
k type co
de
0x05
Add Downlin
k type co
de 0x07
Image
v1.2
Add coun
ting f
eatur
e
Image
v1.1
V
oltage an
d Current
reserv
e three
decimal, pr
evious is t
wo
Can use an
y Fport
for do
wnlink
Add A
T+CFG t
o print al
l setti
ngs
Fix curr
ent and v
oltag
e glith bug
8
10
Table of Contents
Default Chapter
3
Table of Contents
3
1 Introduction
5
What Is LT Series I/O Controller
5
Specifications
6
Features
7
Applications
7
Hardware Variants
8
Firmware Change Log
8
2 Power on Device
10
3 Operation Mode
11
How It Works
11
Example to Join Lorawan Network
11
Uplink Payload
13
There Are Five Working Modes on LT for Different Type Application
13
At+Mod=1, 2Aci+2Avi
13
AT+MOD=2, (Double DI Counting)
14
AT+MOD=3, Single DI Counting + 2 X ACI
15
AT+MOD=4, Single DI Counting + 1 X Voltage Counting
16
AT+MOD=5, Single DI Counting + 2 X AVI + 1 X ACI
16
Payload Decoder
17
Downlink Payload
18
Integrate with Mydevice
22
Interface Detail
25
Digital Input Port: DI1/DI2 /DI3 ( for LT-33222-L, Low Active )
25
Digital Input Port: DI1/DI2 ( for LT-22222-L)
26
Digital Output Port: DO1/DO2 /DO3
27
Analog Input Interface
27
Relay Output
27
Leds Indicators
29
4 Use at Command
30
Access at Command
30
Common at Command Sequence
32
Multi-Channel ABP Mode (Use with SX1301/LG308)
32
Single-Channel ABP Mode (Use with LG01/LG02)
32
Change to Class a
33
5 Faq
34
How to Upgrade the Image
34
How to Change the Lora Frequency Bands/Region
36
How to Set up LT to Work in 8 Channel Mode in US915, AU915, CN470 Bands
36
How to Set up LT to Work with Single Channel Gateway such as LG01/LG02
38
6 Trouble Shooting
40
Downlink Doesn't Work, How to Solve It
40
Have Trouble to Upload Image
40
Why I Can't Join TTN in US915 /AU915 Bands
40
7 Order Info
40
8 Packing Info
40
9 Support
41
10 Reference
42
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Dragino LT22222-L Specifications
General
Brand
Dragino
Model
LT22222-L
Category
Controller
Language
English
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