Chengdu Ebyte Electronic Technology Co.,Ltd. E31-433T30D User Manual
Copyright ©2012–2019
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Chengdu Ebyte Electronic Technology Co.,Ltd.
12
Configuration
Sleep mode can be used for module parameter setting. Use serial port 9600, 8N1 to set module working
parameters via specific command format.
Note
When entering other modes from the sleep mode, the module will reconfigure the parameters. During the
configuration process, AUX keeps low level; after that, AUX outputs 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 commands are as follows (only 9600, 8N1 format is
supported when)
：
No.
Command format
Description
1
C0+Working parameters
The C0+5 byte working parameter is sent in hexadecimal format, 6 bytes in all, and must
be sent continuously (power-down save)
2
C1+C1+C1
Three C1s are sent in hexadecimal format. The module returns the saved parameters and
must be sent continuously.
3
C2+Working parameters
Send C2+5 byte working parameters in hexadecimal format, 6 bytes in all, must be sent
continuously (power off without saving)
4
C3+C3+C3
Three C3s are sent in hexadecimal format. The module returns version information and
must be sent continuously.
5
C4+C4+C4
Three C4s are sent in hexadecimal format, and the module will generate a reset and must
be sent continuously.
7.1 Factory default parameter
Model
Factory default parameter value
：
C0 00 00 18 50 44
Module Model
Frequency
Address
Channel
Air data rate
Baud Rate
Serial port format
Transmitting
power
E31-433T30D
433MHz
0x0000
0x50
1.2kbps
9600
8N1
1W
7.2 Working parameter reading
Instruction format
Detailed description
C1+C1+C1
In sleep mode (M0=1, M1=1), a command (HEX format) is issued to the module serial port: C1
C1 C1, the module will return the current configuration parameters, such as: C0 00 00 1A 17 44.
7.3 Version number reading
Instruction format
Detailed description
C3+C3+C3
In sleep mode (M0=1, M1=1), a command (HEX format) is issued to the module serial port: C3
C3 C3, the module will return the current configuration parameters, such as: C3 32 xx yy;the
second byte represents the frequency , if it’s 32,it is the applicable frequency of 433MHz, if it’s
38, it is the applicable frequency of 470MHz, if it’s 45, it is the applicable frequency of 868MHz;
If it’s 44, it is the applicable frequency of 915MHz; if it’s 46, it is the applicable frequency of
170MHz; xx represents the version number, yy represents other features of module.
