Chengdu Ebyte Electronic Technology Co.,Ltd
E840-DTU(4G-02E) User Manual
Copyright ©2012–2019
,
Chengdu Ebyte Electronic Technology Co.,Ltd
28
Parity
:
UART parity
N, None
O, Odd
E, Even
stop
:
UART stop bit
1
,
1 bit
2
,
2 bits
AT+ ICCID
Function
:
inquire SIM card ID
Format
:
inquire
transmit
:
AT+
ICCID
<CR>
return
:
<CR><LF>+OK=<number><CR><LF>
Parameter
:
number :
The present ICCID of SIM card
AT+ LBS
Function
:
inquire the service info. based on location
Format
:
inquire
transmit
:
AT+
LBS
<CR>
return
:
<CR><LF>+OK=LAC:<lac>,CID:<cid><CR><LF>
Parameter
:
lac :
base station location code for present device
cid:
Base station id
AT+ HSPEED
Function
:
configure/inquire if high speed mode is enabled
Format
:
configure
transmit
:
AT+ HSPEED=<state> <CR>
return
:
<CR><LF>+OK<CR><LF>
Inquire
transmit
:
AT+ HSPEED <CR>
return
:
<CR><LF>+OK=<state> <CR><LF>
Parameter
:
state
ON high speed enabled
OFF high speed disabled
AT+ UARTTS
Function
:
configure/inquire serial port packaging and break frame mechanism
Format
:
configure
transmit
:
AT+ UARTTS =<time>,<length> <CR>
return
:
<CR><LF>+OK<CR><LF>
inquire
transmit
:
AT+ UARTTS <CR>
return
:
<CR><LF>+OK=<time>,<length> <CR>
Parameter
:
time
Serial port break frame packaging time
:(
50~2000
)
ms
Length
Serial port packaging length
:(
20~1024
)
bytes
AT+ SMSSEND
Function
:
transmit SMS command
Format
:
transmit
transmit
:
AT+ SMSSEND =<number>,<info> <CR>
return
:
<CR><LF>+OK<CR><LF>
Parameter
:
Number :receiver’s phone number
info: transmitted content
(
English or number
)