Chengdu Ebyte Electronic Technology Co., Ltd
E32-900T20S User Manual
Copyright ©2012–2021
，
Chengdu Ebyte Electronic Technology Co.,Ltd.
15
7.1 Default parameters
Default parameter values
：：
C0 00 00 1A 17 44
Model
Frequency
Address
Channel
Air data rate
Baud rate
Parity
Transmitting power
E32-900T20S
868MHz
0x0000
0x06
2.4kbps
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 1A 17 44.
7.3 Reading version number
Instruction format
Description
C3+C3+C3
In sleep mode
（
M0=1
，
M1=1
）
,User gives the module instruction (HEX format): C3 C3 C3,Module
returns its present version number, for example C3 00 45 0A 14 0B XX YY. The third bytes means
frequency. 45 here means frequency 900MHZ, 0x14 means 20dBm power; xx is the version
number and yy refers to the other module features.
7.4 Reset command
Instruction format
Description
C4+C4+C4
In sleep mode
（
M0=1
，
M1=1
）
,
User gives the module instruction (HEX format): C4 C4 C4, the module resets for one time.
During the reset process, the module will conduct self-check, AUX outputs low level. After reset
completing, the AUX outputs high level, then the module starts to work regularly which the
working mode can be switched or be given another instruction.
7.5 Parameter setting command
No.
Item
Description
Remark
0
HEAD
Fix 0xC0 or 0xC2, it means this frame data is control command
Must be 0xC0 or 0xC2
C0: Save the parameters when power-down
C2: Do not save the parameters when
power-down
1
ADDH
High address byte of module
（
the default 00H
）
00H-FFH
