Chengdu Ebyte Electronic Technology Co.,Ltd E840-TTL(4G-02)User Manual
Copyright
©
2012
–
2019
,
Chengdu Ebyte Electronic Technology Co.,Ltd
29
Inquire
transmit
:
AT+ SMSINFO <CR>
return
:
<CR><LF>+OK=<info> <CR>
Parameter
:
Info :remote SMS configuration identifier ID
AT+MODBUS
Function
:
configure/ inquire if Modbus RTU/TCP switch function is enabled
Format
:
configure
transmit
:
AT+
MODBUS
=<state> <CR>
return
:
<CR><LF>+OK<CR><LF>
inquire
transmit
:
AT+
MODBUS
<CR>
return
:
<CR><LF>+OK=<state> <CR><LF>
Parameter
:
state
ON
Modbus RTU/TCP switch is on
OFF
Modbus RTU/TCP switch is off
AT+MTCPID
Function
:
configure/ inquire Modbus RTU/TCP event identifier
Format
:
configure
transmit
:
AT+ MTCPID =<id> <CR>
return
:
<CR><LF>+OK<CR><LF>
inquire
transmit
:
AT+ MTCPID <CR>
return
:
<CR><LF>+OK=<id> <CR><LF>
Parameter
:
id
(
0~65535
)
2 bytes
Remark
:
when ID is 0
,
any modbusTCP received will switch to corresponding RTU protocol
,
otherwise, only when
id is matched can it switch
AT+RSTIME
Function
:
configure/ inquire server response overtime
Format
:
configure
transmit
:
AT+ RSTIME =<value> <CR>
return
:
<CR><LF>+OK<CR><LF>
inquire
transmit
:
AT+ RSTIME = <CR>
return
:
<CR><LF>+OK=<value><CR><LF>
Parameters: value, set/query the server timeout value to the device
Remark: The value is mainly used to set the server response timeout. When the device does not receive the data sent by
the server, the device will restart automatically.
Range: 60~65535; in seconds, 0 means turning off the function;