Ebyte E840-DTU User Manual page 26

Chengdu Ebyte Electronic Technology Co. Ltd
Format： inquire
transmit：AT+ HEARTM <CR>
return：<CR><LF>+OK=<time><CR><LF>
configure
transmit：AT+ HEARTM =<time><CR>
return：<CR><LF>+OK<CR><LF>
Parameters: time heartbeat time, 0 off, range 1 to 65535 seconds.
AT+SHORTM
Function：
Format： inquire
transmit：AT+ SHORTM<CR>
return：<CR><LF>+OK=<time><CR><LF>
configure
transmit：AT+ SHORTM=<time><CR>
return：<CR><LF>+OK<CR><LF>
parameter： time short connection time， 0 off，from 2-255 second
AT+EBTIOT
Function：
Format： inquire
transmit：AT+EBTIOT <CR>
return：<CR><LF>+OK=<ctrl><CR><LF>
configure
transmit：AT+EBTIOT =<ctrl><CR>
return：<CR><LF>+OK<CR><LF>
parameter：
Note: After the IoT cloud function is enabled, the module is automatically connected to the Yiyi special IoT platform,
ignoring the sock configuration, registration package, and heartbeat package function.AT+CSQ
Function： inquire signal strength
Format： configure
transmit AT+CSQ<CR><LF>
return <CR><LF>+OK=<csq><CR><LF>
parameter： csq signal strength
description：none
AT+CREG
Function： inquire whether it is registered with the carrier.
Format： configure
transmit AT+CREG<CR><LF>
return <CR><LF>+OK=<creg><CR><LF>
Parameter： creg
Description：
AT+CPIN
Function： inquire SIM card status
Copyright ©2012–2019,Chengdu Ebyte Electronic Technology Co. LTD.
set/inquire short connection time
set /inquire EBYTE IoT Cloud platform
ctrl EBYTE IoT function switch，0 off/1 on
Register to the network
1
not registered to the network1
0
None
E840-DTU(4G-02)User Manual
25