Chengdu Ebyte Electronic Technology Co., Ltd.
E31-433T30S User Manuel
Copyright ©2012–2019
，
Chengdu Ebyte Electronic Technology Co.,Ltd.
11
6.5 Sleep mode (Mode 3)
Type
M0 = 0
，
M1 = 1
Transmitting
Unable to transmit data.
Receiving
Unable to receive data.
Configuration
It can be used for module parameter setting, using serial port 9600 and 8N1, setting module parameters
through specific command.
Note
When entering the other modes form sleep mode, the module will reconfigure the parameters. During the
configuration process, AUX will remain low; after the configuration is completed, AUX will output high
level, so it is recommended that the user detect the AUX rising edge.
7 Command format
In sleep mode (mode 3: M0=1, M1=1), the list of supported command is as follows (when setting, only 9600, 8N1 serial
format is available):
No.
Command
Description
1
C0+working
parameters
The C0+5 bytes working parameter is sent in hexadecimal format, a total of 6 bytes,
and must be sent continuously (power-off saved automatically)
2
C1+C1+C1
Three “C1” are sent in hexadecimal format. The module returns the saved parameters
and must be sent continuously.
3
C2+working
parameters
The C0+5 bytes working parameter is sent in hexadecimal format, a total of 6 bytes,
and must be sent continuously (power-off not saved)
4
C3+C3+C3
Three “C3” are sent in hexadecimal format. The module returns the version
information and must be sent continuously.
5
C4+C4+C4
Three “C4”are sent in hexadecimal format, and the module will reset and must be sent
continuously.
7.1 Factory default parameter
Factory default parameter: C0 00 00 18 50 44
Model
Frequency
Address
Channel
Air data rate
Baud rate
Calibration
TX power
E31-433T30S
433MHz
0x0000
0x50
1.2kbps
9600
8N1
1W
7.2 Working parameter reading
Command format
Description
C1+C1+C1
In sleep mode (M0=1, M1=1), a command (HEX format) is sent to the module serial port: C1
C1 C1, the module will return the current configuration parameters, such as: C0 00 00 1A 17
44.
