Ebyte 400SL22-485, User Manual, Page: 15 / 24

C
hengdu Ebyte Electronic Technology Co.,Ltd E95-DTU(400SL22-485) User Manual
C
opyright ©2012–2020, Chengdu Ebyte Electronic Technology Co.,Ltd
15
02H Read/Write NETID
NETID
（
Default 0
）
Network address, used to distinguish networks;
When communicating with each other, they should be set to the same.
03H Read/Write REG0
7 6 5 UART serial port rate (bps)
For two DTUs that communicate with each
other, the serial port baud rate can be
different, and the verification method can also
be different;
When continuously transmitting large data
packets, users need to consider the data
congestion caused by the same baud rate, and
may even be lost;
It is generally recommended that the baud
rate of the two communication parties be the
same.
0 0 0 The serial port baud rate is 1200
0 0 1 The serial port baud rate is 2400
0 1 0 The serial port baud rate is 4800
0 1 1
The serial port baud rate is 9600
（
default
）
1 0 0 The serial port baud rate is 19200
1 0 1 The serial port baud rate is 38400
1 1 0 The serial port baud rate is 57600
1 1 1 The serial port baud rate is 115200
4 3 Serial parity bit
The serial port mode of the two
communication parties can be different;
0 0 8N1
（
default
）
0 1 8O1
1 0 8E1
1 1 8N1
（等同
00
）
2 1 0 Wireless air rate (bps)
The air rate of both parties must be the same;
The higher the air rate, the smaller the delay
and the shorter the transmission distance.
0 0 0 Air speed 0.3k
0 0 1 Air speed 1.2k
0 1 0 Air speed 2.4k
（
default
）
0 1 1 Air speed 4.8k
1 0 0 Air speed 9.6k
1 0 1 Air speed 19.2k
1 1 0 Air speed 38.4k
1 1 1 Air speed 62.5k
04H Read/Write REG1
7 6 Data Packet Separate setting
The data sent by the user is less than the data
packet separate length, and the serial port
output of the receiving end appears as an
uninterrupted continuous output;
If the data sent by the user is larger than the
data packet separate length, the serial port of
the receiving end will be output in packets.
0 0 240 Bytes
（
default
）
0 1 128 Bytes
1 0 64 Bytes
1 1 32 Bytes
5 RSSI Environmental noise enable
After enabling, you can send commands C0
C1 C2 C3 in transmission mode or WOR
sending mode to read registers;
Register 0x00: Current environmental noise
RSSI;
Register 0X01: RSSI when receiving data last
time
(The current channel noise is: dBm
=-RSSI/2);
Instruction format: C0 C1 C2 C3 + start
a read length;
Return: C1 + address a read
read effective value; for example: send C0 C1
C2 C3 00 01
Return C1 00 01 RSSI
0 Disabled (default)
1 Enable
4 3 2 Remain