Ebyte E840-TTL-4G02E, Руководство пользователя

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Chengdu Ebyte Electronic Technology Co.,Ltd E840-TTL-4G02E User Manual
Copyright ©2012–2019，
Chengdu Ebyte Electronic Technology Co.,Ltd
28
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
AT+NETHEAD
Function
：
configure/ inquire network AT command head
Format
：
configure
transmit
：
AT+ NETHEAD =<value> <CR>
return
：
<CR><LF>+OK<CR><LF>
inquire
transmi
：
AT+ NETHEAD <CR>
return
：
<CR><LF>+OK=<value><CR><LF>
Parameters
：
value, configure/ inquire network AT command head
Remark: The maximum length of network AT command head is 19 bytes
4 Notes

The first Socket of this module will always be opened. After the initialization is successful, it will automatically establish a
connection with the configured network server.

After the module is powered on, it cannot be initialized successfully. That is, the State indicator has no indication for more than
30 seconds. In this case, check whether the module is installed properly, whether the SIM card is properly inserted, and whether
the SIM has failed.