Ebyte E840-DTU - Page 22

Chengdu Ebyte Electronic Technology Co.,Ltd E840-DTU(4G-02E) User Manual
Copyright ©2012–2019
，
Chengdu Ebyte Electronic Technology Co.,Ltd
22
EBTIOT
set/inquire to enable Ebyte IoT Cloud Platform
CREG
Inquire if it is registered to network
CSQ
Inquire signal strength
CPIN
Inquire SIM card status
POTOCOL
set/inquire if protocol transmission mode starts
UARTEX
set/inquire serial port parameter(9600,8，N，1)
ICCID
Inquire SIM card’s ICCID
HSPEED
set/inquire if high speed continuous transmission is opened
LBS
set/inquire base station information
（
base station positioning
）
UARTTS
set/inquire serial port packing length and gap
SMSSEND
Send message
SMSINFO
set/inquire message setting identifier
MODBUS
set/inquire ModbusTCP/RTU switch function
MTCPID
set/inquire ModbusTCP event identifier
NETHEAD
set/inquire AT network head
MQTTMODE
set/inquire MQTT mode
MQTT_ADDRESS
set/inquire address and port of IOT
MQTT_CONNECT
set/inquire parameter connected to IOT
MQTT_SUBSCRIBE_TOPIC
set/inquire subscribed topic and level
MQTT_PUBLISH_TOPIC
set/inquire published topic and level
MQTT_ALIAUTH
set/inquire Ali cloud three factor
d) Command Description：
AT+REBT
Function： Restart module
Format
：
configure
Transmit：AT+REBT<CR>
return：<CR><LF>+OK<CR><LF>
Parameter
：
None
Description：After the command is executed correctly, the module restarts immediately and enters the transparent
transmission mode after restarting.
AT+VER
Function： inquire firmware version
Format： configure
transmit AT+VER<CR><LF>
return <CR><LF>+OK=<ver><CR><LF>
Parameter：ver firmware version
Description：None
AT+INFO
Function
：
Inquire module type and version info.
Format： configure
transmit AT+INFO<CR><LF>
return <CR><LF>+OK=<mod_name>,<hw_ver>,<sw_ver><CR><LF>
Parameter： mod_name module name
hw_ver hardware version
sw_ver software version
Description
：
None
AT+EXAT
Function： exit command mode，enter transparent transmission mode