Chengdu Ebyte Electronic Technology Co., Ltd.
Copyright ©2012–2018, Chengdu Ebyte Electronic Technology Co.,Ltd.
9
7. Instruction format
In setting mode
（
mode 3
：
M1=1, M0=1
）
, it supports below instructions on list.
(
Only support 9600 and 8N1 format when setting
)
No.
Instruction format
Illustration
1
C0 + working parameters
C0 + 5 bytes working parameters are sent in hexadecimal format. 6 bytes in total and must
be send in succession. ( Save the parameters when power-down )
2
C1+C1+C1
Three C1 are sent in hexadecimal format. The module returns the saved parameters and
must be send in succession.
3
C2 + working parameters
C2 + 5 bytes working parameters are sent in hexadecimal format. 6 bytes in total and must
be send in succession. ( Not save the parameters when power-down )
4
C3+C3+C3
Three C3 are sent in hexadecimal format. The module returns the version information and
must be send in succession.
5
C4+C4+C4
Three C4 are sent in hexadecimal format. The module will reset one time and they must be
send in succession.
7.1 Default parameter
Default parameter values
：
C0 00 00 18 00 40
Model
Frequency
Address
Channel
Air data rate
Baud rate
Parity
Transmitting power
E34-2G4D20D
2.4GHz
0x0000
0x00
-
9600
8N1
100mW
7.2 Reading operating parameters
Instruction format
Description
C1+C1+C1
In sleep mode
（
M0=1
，
M1=1
），
User gives the module instruction (HEX format): C1 C1 C1,
Module returns the present configuration parameters.
For example, C0 00 00 18 00 40.
7.3 Reading version number
Instruction format
Description
C3+C3+C3
In setting mode
（
M0=1
，
M1=1
）
,
User gives the module instruction (HEX format): C3 C3 C3,
Module returns its present version number, for example C3 39 xx yy.
39 here means the module model (E39 series); xx is the version number and yy refers to the other
module features.
