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Chengdu Ebyte Electronic Technology Co.,Ltd.
E330-400T13S User Manual
Copyright ©2012–2021
，
Chengdu Ebyte Electronic Technology Co.,Ltd.
13
7.4 Reset command
Instruction format Detailed description
C4+C4+C4
In sleep mode (MOD=1), send a command to the module serial port (HEX format): C4 C4 C4,
The module will generate a reset;
During the reset process, the module performs self-check, and AUX outputs low level. After resetting, AUX outputs high level, and the
module starts to work normally. At this point, you can switch the mode or initiate the next instruction.
7.5 Parameter setting instruction
No Name Describe Remark
0 HEAD Fixed 0xC0 or 0xC2, indicating that this frame data is a
control command
Must be 0xC0 or C2
C0: The set parameters will be saved after power-off.
C2: The set 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 Speed parameters, including serial port speed and air speed
7
， 6 ： Serial port check digit
00: 8N1 (default)
01: 8O1
10: 8E1
11: 8N1 (equivalent to 00)
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5
， 4 ， 3 TTL serial port rate (bps)
000: The baud rate of the serial port is 1200
001: The serial port baud rate is 2400
010: The serial port baud rate is 4800
011: The baud rate of the serial port is 9600
(default)
100: The serial port baud rate is 19200
101: The serial port baud rate is 38400
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2, Keep unused
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1
，
0 Wireless air rate (bps)
00: The air rate is 2.0k (default)
01: The air speed is 5.0k
10: The air speed is 10.0k
11: The air speed is 25.0k

The serial port mode of the two communication parties can be different
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
The baud rate of the communication parties can be different

The serial port baud rate has nothing to do with wireless transmission
parameters, and does not affect the wireless transceiver characteristics.
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
The lower the air speed, the longer the distance, and the longer the
sending time.

The wireless transmission rate in the air must be the same for both
parties.
4 CHAN -------------------------------------------------
7 - 0
： Communication channel, default 28H (433MHz)
----------------------------------------
00H-A8H, corresponding to 410~493MHz
The corresponding frequency is:
410+CH[7:0]*05 MHz
5 OPTION
7 ： Fixed-point transmission enable bit (like MODBUS)
0: Transparent transmission mode (default)
1: Fixed-point transmission mode
6 ， Keep unused
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5 , 4 LDC cycle
00 ： 0ms
01 ： 1000ms （ default ）
10 ： 2000ms
11
：
3000ms
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3, Keep unused
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2 IO drive mode (default 1)

When is 1, the first 3 bytes of each user data frame are used as high
and low addresses and channels. When transmitting, the module changes
its own address and channel, and restores the original settings after
completion -------------------------------------

The larger the LDC period, the lower the power consumption, but the
greater the receiving delay

The wake-up time set by both parties must be consistent;
-------------------------------------

After turning on the RSSI output, after the module receives the wireless
data, it automatically adds 1 byte of the inverse value of the RSSI of this
communication to the end of the data packet

That is: the inverse of the real RSSI value = the valu of the serial port
output e
-------------------------------------

This bit is used to enable the internal pull-up resistor of the module. The
open-drain method has stronger level adaptability, and in some cases, an
external pull-up resistor may be required
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
The greater the output power of the transmitter, the greater the
communication distance and the corresponding transmission power