Chengdu
Copyright ©2012–2019
，
Chengdu Ebyte Electronic Technology Co.,Ltd.
16
7. Command format
Command mode (Mode 2: M0 = 0, M 1 = 1), the list of supported commands is as follows (when set, only 9600, 8N1
format is supported):
No.
Instruction format
Detailed description
1
C0+operating
parameter
Send C0 + 5 byte working parameters in hexadecimal format, a total of 6 bytes and
must be sent continuously (save when power off)
2
C1+C1+C1
Send three C1s in hexadecimal format. The module returns the saved parameters and
must be sent continuously.
3
C2+operating
parameter
Send C2 + 5 bytes working parameter in hexadecimal format, a total of 6 bytes and
must be sent continuously(do not save when power off)
4
C3+C3+C3
Send three C3s in hexadecimal format. The module returns version information and
must be sent continuously.
7.1 Default parameters
Model
Factory default parameter value
：
C0 00 00 19 2E 00
Module type
Frequency Address
Channel
Air rate
Baud rate
Transmitting power
E49-400T20S
433MHz
0x0000
0x2E
2.4kbps
9600
20
7.2 Reading operating parameter
Instruction format
Detailed description
C1+C1+C1
In the setting mode (M0 = 0, M1 = 1), issue a command to the module
serial port (HEX format): C1 C1 C1,
The module will return the current configuration parameters,
such as: C0 00 00 18 20 00
7.3 Reading version number reading
