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Chengdu Ebyte Electronic Technology Co.,Ltd.
7.5 Parameter setting instruction
0
Name
0
HEAD
1
ADDH
2
ADDL
3
SPED
4
CHAN
5
OPTION
Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd.
Description
Fixed 0xC0 or 0xC2, which indicates that this frame data is a
control command
High byte of module address (default 00H)
Low byte of module address (default 00H)
7
6
0
0
0
1
1
0
1
1
5
4
3
0
0
0
0
0
1
0
1
0
Serial port baud rate 9600（default）
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
2
1
0
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
7
6
5
Communication channel
4-0：（425M + CHAN * 0.1M), default 50H（433M）
Fixed point send enable bit（similar to MODBUS）
7
0
Transparent transmission mode
1
Fixed point transmission mode
IO drive mode（default 1）
6
Serial parity bit
8N1（default）
8O1
8 E1
8N1（equals to 00）
TTL Serial port rate（bps）
Serial port baud rate 1200
Serial port baud rate 2400
Serial port baud rate 4800
Serial port baud rate 19200
Serial port baud rate 38400
Serial port baud rate 57600
Serial port baud rate 115200
Wireless air data rate（bps）
Air data rate 1.2k（default）
Air data rate 2.4k
Air data rate 4.8k
Air data rate 9.6k
Air data rate 19.2k
Air data rate 38.4k
Air data rate 50k
Air data rate 70k
Keep and unused
E31-433T17D1B User Manual
Note
Must be 0xC0 or C2
C0 ： The set parameters will be saved
after power down.
C2：The set parameters will not be saved
after power down.。
00H-FFH
00H-FFH
The serial port mode of the two
communication parties can be different
The baud rate of both parties can be
different.
The serial port baud rate has nothing to
do with the wireless transmission
parameters, and does not affect the
wireless transmission and reception
characteristics.
The lower the air speed, the longer the
distance, the stronger the
anti-interference performance and the
longer the transmission time.
The wireless transmission rates of both
communicating parties must be the same.
Write 0.
00H-FFH，correspond 425 ~ 450.5MHz
When value is 1, the first 3 bytes of each
user data frame are used as the high and
low addresses and channels. When
transmitting, the module changes its own
address and channel, and when it is
finished, it restores the original settings.
This bit is used to enable the internal
14
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