Chengdu Ebyte Electronic Technology Co., Ltd.
E22-xxxT22S series product user manual
Copyright©2012–2024
, Chengdu Ebyte Electronic Technology Co., Ltd.
24
8.2 AT parameter analysis
When the serial port receives the correct command, the serial port will return "command=OK", otherwise it will
return "=ERR"
Command parameters
Parameter meaning
Baud ( serial port baud rate )
0:1200
1:2400
2:4800 3:9600
4:19200 5:38400 6 : 57600 7:115200
Parity ( serial port parity bit )
0:8N1
1:8O1
2:8E1
3:8N1
Rate (over-the-air data rate)
Applicable to 400MHz frequency band and 900MHz
frequency band
0:2.4K
1:2.4K
2:2.4K
3:4.8K
4:9.6K
5:19.2K
6:38.4K
7:62.5K
Rate (over-the-air data rate)
Applicable to 230MHz frequency band
0:2.4K
1:2.4K
2:2.4K
3:2.4K
4:4.8K
5: 9.6K
6:15.6K
7:15.6K
Packet (packet length)
0: 240
1: 128
2:64
3:32
Role (WOR role)
0: Receiving
1: Transmitting
Period (WOR period)
0:500ms
1:1000ms 2:1500ms 3:2000ms
4:2500ms 5:3000ms 6:3500ms 7:4000ms
Power (transmission power)
Note 1
0:22dBm
1:20dBm
2:17dBm
3:14dBm
Mode (transmission mode)
0: transparent
1: fixed point
Router (repeater mode)
0: Close
1: Open
AT+TRANS=?
Query sending mode
AT+TRANS=1
Return to fixed point mode
AT+ROUTER=?
Query relay mode
AT+ROUTER=1
Return to relay mode
AT+LBT=?
Query the Listen Before
Talk function switch
AT+LBT=1
Return LBT switch status
AT+ERSSI=?
Query the environmental
noise RSSI switch
AT+ERSSI=1
Return to environmental
noise switch status
AT+DRSSI=?
Query RSSI output
AT+DRSSI=1
Return channel RSSI
function is enabled
AT+ADDR=?
Query module address
AT+ADDR=1234
The return module address
is 1234
AT+CHANNEL=?
Query module working
channel
AT+CHANNEL=23
The return frequency is
433.125M
AT+NETID=?
Query network ID
AT+NETID=2
Return network ID is 2
AT+KEY=?
Query module key
Reading is not supported
(security considerations)
Return ERR
AT+DELAY=?
Query WOR delayed sleep
time
AT+DELAY=1000
Return to WOR delayed
sleep time is 1000ms
AT+SWITCH=?
Query software switching
mode switch
AT+SWITCH=0
Software switching mode is
off
AT+MODE=?
Query the current working
mode (can be queried in all
modes)
AT+MODE=0
Returns the current
transparent transmission
mode
