Dragino LT Series User Manual

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LT Series LoRa IO controller User Manual 16 / 42
3.3.4 AT+MOD=4, Single DI Counting + 1 x Voltage Counting
LT33222-L: This mode the DI3 is used as a counting pin.
LT22222-L: This mode the DI1 is used as a counting pin.
The AVI1 is also used for counting. AVI1 is used to monitor the voltage. It will check the voltage
every minute, if voltage is higher than VOLMAX mV, the AVI1 Counting increase 1, so AVI1
counting can be used to measure a machine working hour.
Size(bytes)
4
4
1
1
1
Value
COUNT1
AVI1
Counting
DIDORO*
Reserve
MOD
DIDORO is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
RO1
RO2
FIRST
Reserve
Reserve
DO3
DO2
DO1
 RO is for relay. ROx=1 : close，ROx=0 always open.
 FIRST: Indicate this is the first packet after join network.
 DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
Note: DO3 is not valid for LT-22222-L.
To use this mode, please run:
AT+MOD=4
ATZ
Other AT Commands for counting are similar to MOD2 Counting Command.
Plus below command for AVI1 Counting:
AT+SETCNT=3,60 (set AVI Count to 60)
AT+VOLMAX=20000 (Set VOLMAX to 20000mV =20v)
3.3.5 AT+MOD=5, Single DI Counting + 2 x AVI + 1 x ACI
LT33222-L: This mode the DI3 is used as a counting pin.
LT22222-L: This mode the DI1 is used as a counting pin.
Size(bytes)
2
2
2
2
1
1
1
Value
AVI1
voltage
AVI2
voltage
ACI1
Current
COUNT1
DIDORO*
Reserve
MOD

Dragino LT Series Specifications

General

Brand	Dragino
Model	LT Series
Category	Controller
Language	English