Chengdu Ebyte Electronic Technology Co.,Ltd. E31-433T17S User Manual
Copyright ©2012–2019
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Chengdu Ebyte Electronic Technology Co.,Ltd.
12
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
E31-433T17S
433MHz
0x0000
0x50
1.2kbps
9600
8N1
50mW
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.
7.4 Reset instruction
Instruction format
Detailed description