Ebyte E22-230T22D User manual

E22-230T22D User Manual
SX1262 230MHz 160mW LoRa wireless module

Chengdu Ebyte Electronic Technology Co.,Ltd. E22-230T22D User Manual
Copyright ©2012–2020，Chengdu Ebyte Electronic Technology Co.,Ltd.
1
DISCLAIMER AND COPYRIGHT NOTICE...................................................................................................... 3
CHAPTER 1 OVERVIEW................................................................................................................................. 4
1.1 PRODUCT INTRODUCTION...........................................................................................................................................................................4
1.2 FEATURES ..................................................................................................................................................................................................4
1.3 APPLICATION ............................................................................................................................................................................................ 5
CHAPTER 2 PARAMETERS............................................................................................................................. 5
2.1 WORKING PARAMETERS ...............................................................................................................................................................................5
2.2 WORKING PARAMETERS ...............................................................................................................................................................................5
CHAPTER 3 MECHANICAL DIMENSIONS AND PIN DEFINITION..............................................................6
CHAPTER 4 RECOMMENDED WIRING DIAGRAM........................................................................................... 7
CHAPTER 5 FUNCTION DETAILS.................................................................................................................8
5.1 FIXED POINT LAUNCH .............................................................................................................................................................................. 8
5.2 BROADCAST TRANSMISSION ....................................................................................................................................................................... 8
5.3 BROADCAST ADDRESS .................................................................................................................................................................................9
5.4 LISTEN ADDRESS ...................................................................................................................................................................................... 9
5.5 MODULE RESET..........................................................................................................................................................................................9
5.6 DETAILED AUX.........................................................................................................................................................................................9
5.6.1 Serial data output indication.....................................................................................................................................9
5.6.2 Wireless transmission indication........................................................................................................................... 10
5.6.3 Module is being configured.........................................................................................................................................10
5.6.4 Precautions............................................................................................................................................................................10
CHAPTER 6 WORKING MODE .......................................................................................................................11
6.1 MODE SWITCH ........................................................................................................................................................................................11
6.2 NORMAL MODE (MODE 0) ..................................................................................................................................................................... 12
6.3 WOR MODE (MODE 1).......................................................................................................................................................................... 12
6.4 CONFIGURATION MODE (MODE 2)........................................................................................................................................................ 12
6.5 DEEP SLEEP MODE (MODE 3)............................................................................................................................................................. 13
CHAPTER 7 REGISTER READ AND WRITE CONTROL .............................................................................. 13
7.1 INSTRUCTION FORMAT............................................................................................................................................................................ 13
7.2 REGISTER DESCRIPTION .........................................................................................................................................................................14
7.3 FACTORY DEFAULT PARAMETERS ............................................................................................................................................................. 17

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CHAPTER 8 USE OF RELAY NETWORK MODE........................................................................................... 17
CHAPTER 9 PC CONFIGURATION INSTRUCTIONS ...................................................................................18
CHAPTER 10 HARDWARE DESIGN .............................................................................................................. 19
CHAPTER 11 FAQ ........................................................................................................................................21
11.1 THE TRANSMISSION DISTANCE IS NOT IDEAL ..................................................................................................................................21
11.2 MODULE IS EASILY DAMAGED .............................................................................................................................................................. 21
11.3 BIT ERROR RATE TOO HIGH ..............................................................................................................................................................21
CHAPTER 12 WELDING OPERATION INSTRUCTIONS .............................................................................. 22
12.1 REFLOW TEMPERATURE .......................................................................................................................................................................... 22
12.2 REFLOW SOLDERING CURVE ................................................................................................................................................................. 23
CHAPTER 13 RELATED MODELS ................................................................................................................ 23
CHAPTER 14 ANTENNA GUIDELINES........................................................................................................24
14.1 ANTENNA RECOMMENDATION................................................................................................................................................................. 24
CHAPTER 15 BATCH PACKING METHOD....................................................................................................24
REVISE HISTORY ........................................................................................................................................25
ABOUT US.................................................................................................................................................... 25

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Disclaimer and Copyright Notice
The information in this document, including the URL address for reference, is subject tochangewithout notice.
The document is provided "as is" without any guarantee responsibility, includinganyguarantee for marketability,
suitability for a specific purpose, or non-infringement, and anyguaranteefor any proposal, specification or sample
mentioned elsewhere. This document does not bearanyresponsibility, including the responsibility for infringement
of any patent rights caused bytheuseofthe information in this document. This document does not grant any license
for the use of intellectualproperty rights in estoppel or other ways, whether express or implied.
The test data obtained in the article are all obtained by the Ebyte laboratory, andtheactualresults may vary
slightly. We hereby declared that all brand names, trademarks and registered trademarks mentionedinthis document
are the property of their respective owners. The final interpretation right belongs to Chengdu Ebyte Electronic
Technology Co., Ltd.
Notice :
Due to product version upgrades or other reasons, the contents of this manual may be changed. Ebyte
ElectronicTechnology Co., Ltd. reserves the right to modify the contents of this manual without any hint or noticet.
Thismanual is only used as a guide. Chengdu Ebyte Electronic Technology Co., Ltd. makes every effort
toprovideaccurate information in this manual. However, we does not guarantee that the contents of the manual
arecompletely free of errors. All statements, information and suggestions in this manual do not constitute
anyexpressor implied guarantee.

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Chapter 1 Overview
1.1 Product Introduction
E22-230T22D is a new generation LoRa wireless module, based on
SEMTECH SX1262 RF chip wireless serial module (UART), with a variety of
transmission methods, working in the (220.125 ~ 236.125MHz) frequency
band (default 230.125MHz), LoRa spread spectrum technology, TTL level
output, compatible with 3.3V and 5V IO port voltage.
E22-230T22D adopts the new generation LoRa spread spectrum technology, compared with the traditional SX1276
solution, SX1262 solution has longer transmission distance, faster speed, lower power consumption and smaller
size; it supports wake-on-air, wireless configuration, carrier listening, automatic relay, communication key and
other functions, supports sub-packet length setting, and can provide custom development services.
1.2 Features
Develops new LoRa spread spectrum modulation technology based on SX1262, which brings longer communication
distance and stronger anti-interference capability;
Supports auto-relay networking, multi-level relay for ultra-long distance communication and multiple networks
running simultaneously in the same area;
Supports user-set communication key, and it cannot be read, which greatly improves the confidentiality of
user data;
Supports LBT function to listen to the channel environment noise before sending, which can greatly improve
the communication success rate of the module in harsh environment;
Supports RSSI signal strength indication function for evaluating signal quality, improving communication
network and ranging;
Supports wireless parameter configuration, sending command packets over the air to remotely configure or
read wireless module parameters;
Supports over-the-air wake-up, i.e., ultra-low power consumption function, for battery-powered application
solutions;
Supports fixed-point transmission, broadcast transmission, and channel monitoring;
Supports deep hibernation, the power consumption of the whole unit in this mode is about 2uA;
Supports 230MHz power band with better penetration and bypass capability than 433MHz;
Communication distance up to 5km under ideal conditions;
Parameters are saved at power-down, and the module will work according to the set parameters after re-powering;
High efficiency watchdog design, in case of abnormality, the module will restart in automatically and can
continue to work according to the previous parameter settings;
Supports data transfer rates from 2.4k to 15.6kbps;
Supports 2.3 to 5.5V power supply, and any power supply greater than 5V can ensure the best performance;
Industrial standard design, supporting long time use at -40~+85℃;
Dual antenna optional (IPEX/stamp hole), easy for users to secondary development, easy to integrate.h

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1.3 Application
Home security alarms and remote keyless entry;
Smart home as well as industrial sensors, etc;
Wireless alarm security systems;
Building automation solutions;
Wireless industrial grade remote controls;
Healthcare products;
Advanced Meter Reading Architecture (AMI);
Automotive Industry Applications.
Chapter 2 Parameters
2.1 Working parameters
Main Param
Function
Notes
Min
Max
Power supply voltage（V）
0
5.5
Over 5.5V permanently burns out the module
blocking power（dBm）
-
10
The probability of burning at close range is
small
Operating temperature
（℃）
-40
+85
Industrial grade
2.2 Working parameters
Main Param
Function
Notes
Min
Typical
value
Max
Working Voltage（V）
2.1
5.0
5.5
≥3.3V Guaranteed output power
Communication level（V）
3.3
There is a risk of burnout when using the 5V level
Working temperature（℃）
-40
-
+85
Industrial grade design
Working Frequency（MHz）
220.125
-
236.125
Support ISM band
功
耗
Emission current（mA）
107
Instantaneous power consumption
Receiving current
（mA）
11
Sleep current（uA）
2
software shutdown
Maximum transmit power
（dBm）
21.5
22.0
22.5
Maximum transmit power
（dBm）
-146
-147
-148
Air rate 2.4kbps

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Air rate（bps）
2.4k
-
15.6k
User programming control
Main Param
Description
Notes
Distance
5km
Clear and open, antenna gain 5dBi, antenna height 2.5m, air rate
2.4kbps
Data length
240 Byte
Packets of 32/64/128/240 bytes can be sent by command
Cache capacity
1000 Byte
Modulation
LoRa
Next generation LoRa modulation technology
Communication Interface
UART Serial
port
TTL Level
Packaging method
SMD
Interface
1.27mm
Size
16*26 mm
RF Interface
IPEX/Stamp
hole
Equivalent impedance is about 50Ω
Chapter 3 Mechanical Dimensions and Pin Definition
Figure 3-1 Mechanical dimensions and pin definition
Pin
number
Pin name
Pin Orientation
pin usage

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1
M0
Input (very
weak pull-up)
Cooperate with M1 to determine the 4 working modes of the module
(can not be suspended, if not used, it can be grounded)
2
M1
Input (very
weak pull-up)
Cooperate with M0 to determine the 4 working modes of the module
(can not be suspended, if not used, it can be grounded)
3
RXD
Input
TTL serial port input, connected to the external TXD output pin;
4
TXD
Output
TTL serial output, connected to external RXD input pin;
5
AUX
Output
Used to indicate the working state of the module; the user wakes
up the external MCU, and outputs a low level during the power-on
self-test initialization; (can be left floating）
6
VCC
Input
Module power supply positive reference, voltage range: 3.0 to 5.5V
DC
7
GND
Input
Module Ground
8
Fixed
hole
-
Fixed hole
9
Fixed
hole
-
Fixed hole
10
Fixed
hole
-
Fixed hole
Chapter 4 Recommended Wiring Diagram
序号
A brief description of the connection between the module and the microcontroller (the above picture
takes the STM8L microcontroller as an example)
1
The wireless serial port module is TTL level, please connect with TTL level MCU.
2
For some 5V microcontrollers, it may be necessary to add 4 to 10K pull-up resistors to the TXD
and AUX pins of the module.

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Chapter 5 Function Details
5.1 Fixed point launch
5.2 Broadcast transmission

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5.3 Broadcast address
Example: Set the address of module A to 0xFFFF and the channel to 0x04.
When module A is used as a transmitter (same mode, transparent transmission mode), all receiving modules
under the 0x04 channel can receive data to achieve the purpose of broadcasting.
5.4 Listen address
Example: Set the address of module A to 0xFFFF and the channel to 0x04.
When module A is used as a receiver, it can receive all data under the 0x04 channel to achieve the purpose
of monitoring.
5.5 Module reset
After the module is powered on, AUX will output a low level immediately, perform hardware self-check, and
set the working mode according to user parameters;During this process, the AUX keeps the low level, and after
the completion, the AUX outputs the high level, and starts to work normally according to the working mode
composed of M1 and M0;Therefore, the user needs to wait for the rising edge of AUX as the starting point
for the normal operation of the module.
5.6 Detailed AUX
AUX is used for wireless transceiver buffer indication and self-check indication.
It indicates whether the module has data that has not been transmitted wirelessly, or whether the received
wireless data has not been sent through the serial port, or the module is in the process of initializing
and self-checking.
5.6.1 Serial data output indication
Used to wake up an external MCU from sleep；

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5.6.2 Wireless transmission indication
Buffer empty: the data in the internal 1000 byte buffer, are written to the wireless chip (automatic
packetization);
When AUX=1 the user initiates data less than 1000 bytes continuously, without overflow;
When AUX=0 buffer is not empty: the data in the internal 1000-byte buffer, not all written to the wireless chip
and open to transmit, at this time the module may be waiting for the user data to end timeout, or is in the process
of wireless sub-packet transmission.
[Note]: When AUX=1, it does not mean that all the serial data of the module has been emitted through wireless,
or the last packet of data is being emitted.
5.6.3 Module is being configured
Only at reset and when exiting sleep mode；
5.6.4 Precautions
Item
AUX Notes
1
For the above functions 1 and 2, the output low level is given priority, that is, if any one of the
output low level conditions is met, the AUX outputs the low level;When all low level conditions are
not met, AUX outputs high level.
2
When AUX outputs a low level, it means that the module is busy, and the working mode detection will
not be performed at this time;
When the module AUX outputs a high level within 1ms, the mode switching will be completed.

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3
After the user switches to the new working mode, at least 2ms after the rising edge of AUX, the module
will actually enter this mode;
If AUX is always high, then the mode switch will take effect immediately.
4
When the user enters other modes from mode 3 (sleep mode) or during the reset process, the module will
reset the user parameters, during which AUX outputs a low level.
5
Due to the characteristics of LoRa modulation method, the information transmission delay is much longer
than FSK, such as at 1.2kbps airspeed, 100 bytes transmission delay is about 1.5 seconds, it is recommended
that customers should not carry out large data transmission at low airspeed, so as not to cause data
loss due to data accumulation and cause communication abnormalities.
Chapter 6 Working Mode
The module has four working modes, which are set by pins M1 and M0; the details are shown in the following table：
Mode（0-3）
M1
M0
Mode Introduction
Notes
0
transmissio
n mode
0
0
Open Serial port , wireless open, transparent
transmission
Support special
command over-the-air
configuration
1 WOR mode
0
1
Can be defined as WOR sender and WOR receiver
Support air wake-up
2
configurati
on mode
1
0
Users can access the registers through the serial port
to control the working status of the module
3 deep sleep
mode
1
1
Module goes to sleep
6.1 Mode switch
Numb
er
Notes
1
Users can combine M1 and M0 with high and low levels to determine the working mode of the module.
The 2 GPIOs of the MCU can be used to control the mode switching;
After changing M1 and M0: If the module is idle, after 1ms, it can start to work according to the
new mode;
If the module has serial port data that has not been transmitted wirelessly, the new working mode
can only be entered after the transmission is completed;
If the module receives wireless data and sends out data through the serial port, it needs to be sent
to the new working mode;
Therefore, the mode switching can only be effective when the AUX output is 1, otherwise the switching
will be delayed.
2
For example: if the user continuously inputs a large amount of data and switches modes at the same
time, the mode switching operation is invalid at this time; the module will process all user data
before performing the new mode detection;
So the general suggestion is: Detect the output state of the AUX pin, wait for 2ms after the output
is high, and then switch.

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3
When the module is switched from other modes to sleep mode, if there is data that has not been processed;
The module can enter the sleep mode only after processing these data (including receiving and sending).
This feature can be used for fast sleep to save power consumption; for example: the transmitter module
works in mode 0, the user initiates serial port data "12345", and then does not need to wait for the
AUX pin to be idle (high level), and can directly switch to sleep mode, Put the user's main MCU to
sleep immediately, the module will automatically send all user data wirelessly, and automatically
enter sleep within 1ms;
Thus, the working time of the MCU is saved and the power consumption is reduced.
4
In the same way, this feature can be used for any mode switching. After the module processes the current
mode event, it will automatically enter the new mode within 1ms; thus saving the user's work of querying
AUX, and achieving the purpose of fast switching ;
For example, switching from the transmit mode to the receive mode; the user MCU can also go to sleep
in advance before the mode switch, and use the external interrupt function to obtain the AUX change,
so as to switch the mode.
5
This operation mode is very flexible and efficient, and is completely designed according to the user's
MCU operation convenience, and can reduce the workload of the entire system as much as possible, improve
system efficiency, and reduce power consumption.
6.2 Normal Mode (Mode 0)
Type
When M0 = 0, M1 = 0, the module works in mode 0
Transceiving
Users can input data through the serial port, and the module will start wireless transmission.
Receiving
The wireless receiving function of the module is turned on, and the wireless data will be output through
the serial port TXD pin after receiving the wireless data.
6.3 WOR Mode (Mode 1)
Type
When M0 = 1, M1 = 0, the module works in mode 1
Transceiving
When defined as a transmitter, a wake-up code for a certain period of time will be automatically added
before transmission
Receiving
Data can be received normally, and the receiving function is equivalent to mode 0
6.4 Configuration Mode (Mode 2)
Type
When M0 = 0，M1 = 1，the module works in mode 2
Transceiving
wireless transmission off

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Receiving
wireless transmission off
Configuration
User can access registers to configure module operating status
6.5 Deep Sleep Mode (Mode 3)
Type
When M0 = 1, M1 = 1, the module works in mode 3
Transceiving
Unable to transmit wireless data.
Receiving
Unable to transmit wireless data.
Notes
When entering other modes from sleep mode, the module will reconfigure parameters. During the configuration
process, AUX remains low;
After completion, it outputs a high level, so it is recommended that the user detect the rising edge of
AUX.
Chapter 7 Register Read and Write Control
7.1 Instruction format
In configuration mode (mode 2: M1=1, M0=0), the list of supported commands is as follows (when setting, only 9600
and 8N1 formats are supported):
Numb
er
Instruction
format
详细说明
1
set register
Instruction: C0+start address+length+parameter
Response: C1+start address+length+parameters
Example 1: Configure the channel as 0x09
Command Start address Length Parameter
Send: C0 05 01 09
Return: C1 05 01 09
Example 2: Configure module address (0x1234), network address (0x00), serial port
(9600 8N1), air speed (1.2K) at the same time
Send: C0 00 04 12 34 00 61
Return: C1 00 04 12 34 00 61
2
read register
Instruction: C1+start address+length
Response: C1+start address+length+parameters
Example 1: Read channel
Command Start address Length Parameter
Send：C1 05 01
Return: C1 05 01 09
Example 2: Read module address, network address, serial port and airspeed at the
same time

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Send: C1 00 04
Return: C1 00 04 12 34 00 61
3
set temporary
register
Instruction: C2 + start address + length + parameters
Response: C1 + start address + length + parameters
Example 1: Configure the channel as 0x09
Command Start address Length Parameter
Send: C2 05 01 09
Return: C1 05 01 09
Example 2: Configure module address (0x1234), network address (0x00), serial port
(9600 8N1), null speed (1.2K) at the same time
Send: C2 00 04 12 34 00 61
Return: C1 00 04 12 34 00 61
5
Wireless
configuration
Command: CF CF + General command
Response: CF CF + general response
Example 1: Wireless configuration channel is 0x09
Wireless Command Header Command Start Address Length Parameter
Send: CF CF C0 05 01 09
Return: CF CF C1 05 01 09
Example 2: Wireless simultaneously configure module address (0x1234), network
address (0x00), serial port (9600 8N1), null speed (1.2K)
Send: CF CF C0 00 04 12 34 00 61
Return: CF CF C1 00 04 12 34 00 61
6
wrong format
Format Error Response
FF FF FF
7.2 Register description
Item
Write
/read
Name
Description
Notes
00H
Write/
read
ADDH
ADDH（default0）
Module address high byte and low byte;
Note: When the module address is equal to
FFFF, it can be used as a broadcast and
listening address, that is, the module will
not perform address filtering at this time.
01H
Write/
read
ADDL
ADDL（default0）
02H
Write/
read
NETID
NETID（default0）
etwork address, used to distinguish the
network;
When communicating with each other, they
should be set to the same.
03H
Write/
read
REG0
7
6
5
UART serial rate (bps)
For the two modules that communicate with
each other, the serial port baud rate can
be different, and the verification method
can also be different;
0
0
0
Serial port baud rate is
1200

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When continuously transmitting large data
packets, users need to consider the data
blocking caused by the same baud rate, and
may even be lost;
It is generally recommended that both sides
of the communication have the same baud
rate.
0
0
1
Serial port baud rate is
2400
0
1
0
Serial port baud rate is
4800
0
1
1
Serial port baud rate is
9600（default）
1
0
0
Serial port baud rate is
19200
1
0
1
Serial port baud rate is
38400
1
1
0
Serial port baud rate is
57600
1
1
1
Serial port baud rate is
115200
4
3
Serial check digit
The serial port modes of both sides of the
communication can be different；
0
0
8N1（default）
0
1
8O1
1
0
8E1
1
1
8N1（equivalent 00）
2
1
0
Wireless air rate (bps)
The air speed of both parties must be the
same;
The higher the air rate, the lower the delay
and the shorter the transmission distance.
0
0
0
Air rate2.4k
0
0
1
Air rate2.4k
0
1
0
Air rate2.4k
0
1
1
Air rate2.4k（default）
1
0
0
Air rate4.8k
1
0
1
Air rate9.6k
1
1
0
Air rate15.6k
1
1
1
Air rate15.6k
04H
Write/
read
REG1
7
6
Subcontracting settings
When the data sent by the user is less than
the packet length, the serial output of the
receiving end is presented as uninterrupted
continuous output;
If the data sent by the user is larger than
the packet length, the serial port of the
receiving end will be output in packets.
0
0
240bytes（default）
0
1
128bytes
1
0
64bytes
1
1
32bytes
5
RSSI Ambient Noise Enable
Enable command (packet setting, transmit
power as default parameters, configuration
mode): C0 04 01 20;
After it is enabled, the C0 C1 C2 C3
instruction can be sent in the transmission
mode or the WOR transmission mode to read
the register;
Register 0x00: Current ambient noise RSSI;
Register 0X01: RSSI when data was last
received
(Current channel noise is: dBm = -(256 -
0
disabled (default)
1
Enable

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RSSI));
Instruction format: C0 C1 C2 C3+start
address+read length;
Return: C1 + address + read length + read
valid value; such as: send C0 C1 C2 C3 00
01
Return C1 00 01 RSSI (address can only start
from 00)
4
3
2
Reserve
1
0
transmit power
Power and current have a non-linear
relationship, and the power supply
efficiency is the highest at the maximum
power;
The current does not decrease
proportionally as the power decreases.
0
0
22dBm（default）
0
1
17dBm
1
0
13dBm
1
1
10dBm
05H
Write/
read
REG2
Channel Control（CH）
0-64respectively represent a total of 65
channels
Actual frequency = 220.125 + CH * 0.25M
06H
Write/
read
REG3
7
Enable RSSI bytes
When enabled, the module receives wireless
data and outputs it through the serial port
TXD, followed by an RSSI strength byte.
0
disabled (default)
1
Enable
6
transfer method
For fixed-point transmission, the module
identifies the money three bytes of the
serial data as: address high + address low
+ channel, and uses them as the wireless
transmitting target.
0
transparent transmission (default)
1
fixed point transmission
5
Relay function
(a) When the relay function is enabled, the
module will initiate a forwarding if the
destination address is not the module
itself;
To prevent data backhaul, it is recommended
to use with fixed-point mode; i.e., the
destination address and the source address
are different.
0
Disable relay function (default)
1
Enable relay function
4
LBT Enable
After enabling, the wireless data will be
monitored before transmission, which can
avoid interference to a certain extent, but
may cause data delay;
The maximum stay time of LBT is 2 seconds.
When it reaches two seconds, it will be
issued forcibly.
0
disabled (default)
1
enable
3
WOR Mode Transceiver Control
Valid only for mode 1;
1. wor's receive mode, the module can modify
the delay time after wake-up, the default
time is 0;
2. the receiver needs to send the command
C0 09 02 03 E8 in configuration mode (C0 is
the write command, 09 is the host initiator
address, 02 is the length, 03 E8 is the set
delay time, the maximum FFFF that is
65535ms, set to 0 to turn off the wake-up
0
WOR 接收方（默认）
工作在 WOR 监听模式，监听周期见下文（WOR
周期），可以节省大量功耗。
1
WOR transmitter
The transceiver is turned on, and a
wake-up code for a certain period of time

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delay time).
3. Data can be sent within the delay time
is added when transmitting data.
2
1
0
WOR cycle
Valid only for mode 1;
cycle time T= (1+WOR)*500ms, maximum
4000ms, minimum 500ms;
the longer the WOR listening interval cycle
time, the lower the average power
consumption, but the greater the data
delay;
Sending and receiving sides must be
consistent (very important)
0
0
0
500ms
0
0
1
1000ms
0
1
0
1500ms
0
1
1
2000ms
1
0
0
2500ms
1
0
1
3000ms
1
1
0
3500ms
1
1
1
4000ms
07H
Write
CRYPT_H
Key high byte (default 0)
Write-only, with reads returning 0;
Used for encryption to avoid interception
of over-the-air wireless data by similar
modules;
These two bytes will be used internally by
the module as calculation factors to
transform the over-the-air radio signal for
encryption.
08H
Write
CRYPT_L
Key Low byte (default 0)
80H～86H
Read
PID
Product information 7 bytes
Product information 7 bytes
7.3 Factory default parameters
Mode
Factory default parameter value：C0 00 00 62 00 28
Module number
Frequency
Address
Channel
Air rate
Baud rate
Serial format
transmit
power
E22-230T22D
230.125MHz
0x0000
0x28
2.4kbps
9600
8N1
22dbm
Chapter 8 Use of Relay Network Mode
Numbe
r
Relay Mode Description
1
After setting the relay mode through the configuration mode, switch to the general mode, and the relay starts to work.
2
In relay mode, ADDH and ADDL are no longer used as module addresses, but correspond to NETID forwarding pairing
respectively. If one network is received, it will be forwarded to the other network;
The network ID of the repeater itself is invalid.
3
In relay mode, the relay module cannot send and receive data, and cannot perform low-power operation.
4
When the user enters other modes from mode 3 (sleep mode) or during the reset process, the module will reset the user
parameters, during which AUX outputs a low level.
Trunking rules description：

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1、Forwarding rules, trunking can forward data in both directions between two NETIDs。
2、In trunk mode, ADDH/ADDL is no longer used as a module address and is forwarded as a NETID pair.
As shown in the figure：
①First-level relay
"Node 1" NETID is 08.
"Node 2" NETID is 33.
The ADDH\ADDL of relay 1 are 08 and 33 respectively.
So the signal sent by node 1 (08) can be forwarded to node 2 (33)
At the same time, the addresses of node 1 and node 2 are the same, so the data sent by node 1 can be received
by node 2.
②Secondary relay
The ADDH\ADDL of relay 2 are 33 and 05 respectively.
So relay 2 can forward relay 1's data to network NETID: 05.
Therefore, node 3 and node 4 can receive the data of node 1. Node 4 outputs data normally, and node 3 and node
1 have different addresses, so no data is output.
③Two-way relay
As shown in the configuration: the data sent by node 1 can be received by nodes 2 and 4, and the data sent by
nodes 2 and 4 can also be received by node
Chapter 9 PC Configuration Instructions
The following picture shows the E22-230T22D configuration host computer display interface, the user can switch
to command mode through M0 and M1, and quickly configure and read parameters on the host computer.

Chengdu Ebyte Electronic Technology Co.,Ltd. E22-230T22D User Manual
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In the configuration of the host computer, the module address, frequency channel, network ID, and key are
all displayed in decimal; the value range of each parameter is as follows:
Network address: 0～65535
Frequency channel: 0～83
Network ID: 0～255
Key: 0～65535
When using the host computer to configure the relay mode, users need to pay special attention, because in
the host computer, each parameter is displayed in decimal mode, so the module address and network ID need
to be converted into decimal when filling in;
If the network ID input by transmitter A is 02, and the network ID input by receiver B is 10, then when relay
terminal R sets the module address, convert the hexadecimal value 0X020A to decimal value 522 and fill in
as relay terminal R the module address;
That is, the module address value that needs to be filled in by the relay terminal R at this time is 522.
Chapter 10 Hardware Design
t is recommended to use a DC regulated power supply to supply power to the module, the power supply ripple
coefficient should be as small as possible, and the module should be grounded reliably;
Please pay attention to the correct connection of the positive and negative poles of the power supply. If
the reverse connection will directly cause permanent damage to the module, it is recommended to design and
add an anti-reverse connection circuit.
Please check the power supply to ensure that it is between the recommended power supply voltages. If it exceeds
the maximum value, the module will be permanently damaged;
Please check the stability of the power supply, the voltage should not fluctuate greatly and frequently;
When designing the power supply circuit for the module, it is often recommended to reserve more than 30%
of the margin, so that the whole machine can work stably for a long time;
The module should be kept as far away as possible from the power supply, transformer, high-frequency wiring