Chengdu Ebyte Electronic Technology Co., Ltd.
E31-433T30S User Manuel
Copyright ©2012–2019
，
Chengdu Ebyte Electronic Technology Co.,Ltd.
12
7.3 Version information
Command format
Description
C3+C3+C3
In sleep mode (M0=1, M1=1), a command is sent to the module serial port (HEX format):
C3 C3 C3, the module will return the current configuration parameters, such as: C3 31 xx yy;
the second byte represents the frequency, if it is 31, it is the applicable frequency of
433MHz; if it is 51, it is the applicable frequency of 230MHz; xx is the version number, and
yy refers to other characteristics of the module.
7.4 Reset
Command format
Description
C4+C4+C4
In sleep mode (M0=1, M1=1), a command is sent to the module serial port (HEX format):
C4 C4 C4, the module will reset; during reset, the module performs self-test, AUX will
output low level, after the reset, AUX will output high level, and the module starts to work
normally. At this time, you can switch modes or send the next command.
7.5 Parameter setting command
No.
Item
Description
Remark
0
HEAD
Fixed 0xC0 or 0xC2, indicates that this data is a control
command
Must be 0xC0 or 0xC2
C0
：
The parameters will be saved after
power off.
C2
：
The parameters will not be saved
after power off.
1
ADDH
Module address high byte (default 00H)
00H-FFH
2
ADDL
Module address low byte (default 00H)
00H-FFH
3
SPED
7
6
Serial parity byte
The serial port mode of the two
communication parties can be different
0
0
8N1
（
default
）
0
1
8O1
1
0
8 E1
1
1
8N1
（
Equivalent to 00
）
5
4
3
TTL serial port rate
（
bps
）
The baud rate of the two communication
parties can be different
The baud rate is independent of the
wireless transmission parameters and
does not affect the wireless transmission
and reception characteristics.
0
0
0
Baud rate 1200
0
0
1
Baud rate 2400
0
1
0
Baud rate 4800
0
1
1
Baud rate 9600
（
default
）
1
0
0
Baud rate 19200
1
0
1
Baud rate 38400
1
1
0
Baud rate 57600
1
1
1
Baud rate 115200
2
1
0
Air data rate
（
bps
）
The lower the air data rate, the farther the