Chengdu Ebyte Electronic Technology Co.,Ltd
E104-BT53C3 Manual User
Copyright ©2012–2020
，Chengdu Ebyte Electronic Technology Co.,Ltd
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5.
XX:XX:XX:XX:XX:XX DISCONNECTED B：Beacon disconnect；
6.
XX:XX:XX:XX:XX:XX CONNECTD C*Y：The primary role is connected successfully. Procedure；
7.
XX:XX:XX:XX:XX:XX DISCONNECTED C：The primary role is disconnected；
8.
ALREADY CONNECTED：This device is connected；
9.
XX:XX:XX:XX:XX:XX CONNECT TIMEOUT：BLE Host connection to secondary device times out；
The above state can be enabled or disabled by the AT command "AT+ LOGMSG". For details, see section 5 AT
Command.
5.6 Configuration
1．A maximum of eight secondary role devices can be connected to a single primary role. A master/slave role
can be connected to seven slave devices at the same time, and can be connected to another master device as a slave
role；
2．AT+CONNECT command Failed to connect to the device ERR=3. For the cause, see the command description；
3．Multiple connection Specifies automatic reconnection of multiple devices. When a peer device is
disconnected abnormally, the module starts automatic reconnection，
4．Please refer to instructions；
5．In the case of multiple connections, the handle function specified in the AT+TRM_HANDLE command does not
save data after a power failure. The device transfers data to the newly connected device by default. If the handle
device corresponding to data transfer is disconnected, the handle value of data transfer automatically switches
to the last device in the connection list. (The handle value can be XX:XX:XX:XX:XX:XX in the message returned
after the connection is successfully established.
6．"CONNECTED P*X" or via the command AT+CONNECT_LIST? Acquired)；
7．Seven. After the user uses the command to actively disconnect the connection with the device that has been
set as automatic reconnection, the automatic reconnection fails this time
8．It takes effect after an abnormal disconnect.
Note: Multi-connection data transmission sources are more complex, such as master-slave integration: data
may come from the following four devices, so the data packet should contain the data source, otherwise it is
impossible to identify which device the data comes from.
