Ebyte E810 Series User manual

EBYTE Wireless Data Transceiver
E810-DTU
User Manual
This manual may change with the continuous improvement of the product. Please refer to the latest version of the instruction.
Chengdu Ebyte Electronic Technology Co., Ltd. reserves all rights of final interpretation and modification of this manual.

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1.Introduction
1.1 Brief Introduction
E810-DTU is a small, powerful wireless digital data-Ethernet transceiver with the function of long range, digital data
processing, digital modulation and demodulation, FEC, balanced soft decision, etc. It carries a M0+ series 32 bit processor,
quick speed, high efficiency. It has adaptive network rate(supporting for 100M full duplex) and TCP Server, TCP Client,
UDP Server, UDP Client four communication mechanisms.
Wireless data transceiver working as a communication medium, as well as the fiber, microwave, the same line, has a
certain scope of application: it provides some special conditions in the private network monitoring signal real-time, reliable
data transmission, with the features of low cost, convenient installation and maintenance, diffraction ability, flexible
network structure, range of coverage, suitable for the occasion of dot and scatter, complex geographical environment ,
connecting with PLC, RTU, rain gauge, level gauge and other data terminals.
E810-DTU is easy to operate, users can directly configure the module through computer and transmit the data easily. It
solves the problem that some scenes are inconvenient to deploy network cable or short range of normal WiFi transceiver.
1.2 Features
All the core components are imported originally , compared with the current imports of digital transceiver, we are
the most advanced, most cost effective and the smallest one.
Transmission power is optional, all technical indicators have met the European industry standards.
Use temperature compensation circuit, the frequency stability is better than ±2PPM.
With operating temperature range: -40 ℃~ +85 ℃, adapting to a variety of harsh working environment.
All with aluminum alloy shell, compact, easy installation, good heat dissipation; perfect shielding design, good
electromagnetic compatibility and strong anti-interference ability.
Power reverse protection, over-protection, antenna surge protection and other multiple protection functions, greatly
increase the reliability of the transceiver.
Powerful software features, all parameters can be programmed to set: such as power, frequency, air data rate,
address ID, etc.
Ultra-low power consumption, standby current is 20mA (the power consumption of power saving mode and sleep
mode is lower), the transmitting current ≤350A (1W).
With watchdog and accurate time layout, in the event of an exception, the module will automatically restart and
continue to follow the previous parameters to operate.

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2.Dimension
2.1 Pin Description
Pin NO.
Name
Function
Description
1
PWR-LED
Power interface
Straight plug-in hole, O.D 5.5mm, I.D 2.5mm
2
RJ45-interface
Ethernet interface
Standard RJ45 interface, connect with the device or PC
3
PWR-LED
Power LED
Red, lit when the power is on
4
WORK-LED
Transmit LED
Yellow, blinks when sending data
5
LINK-LED
Receive LED
Yellow, blinks when connected
6
M0-LED
Mode LED
Yellow, M0、M1 indicates RF status
5
M1-LED
Mode LED
Yellow, M0、M1 indicates RF status
RESET
RESET switch
Restore factory default setting after long press 5-15 seconds
8
Antenna interface
SMA-K interface
External thread, 10mm, 50Ωcharacteristic impedance

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3.Technical indicators
3.1 Model specification
Model
Frequency
Power
Distance
Feature
Application
Hz
dBm
km
E810-DTU(433L30)
433M
30
8
LoRa Spread
spectrum
anti-interference
To the environment with small data, far
distance
E810-DTU(433C30)
433M
30
3
High-speed
continuous
transmission
To the environment with large data,
supporting Modbus
E810-DTU(433N30)
433M
30
6
Narrowband
technology
To the environment with medium data,
dense deployment
★Note: Test condition: in clear and open air without shelters, 12V /2A power supply, 5dBi gain sucker antenna over 2
meters height from the ground, with the factory default parameters.
3.2 General specification parameters
NO.
Parameter
Specification
Description
1
Size
66 * 66 * 21 mm
E810-DTU（433L30/433C30/433N30）
2
Weight
79±1g
E810-DTU（433L30/433C30/433N30）
3
Operating
temperature
-40℃～+85℃
Long time use above 70 ℃(not recommended)
4
Antenna
impedance
50 Ω
Standard 50 Ωcharacteristic impedance
5
Supply voltage
+8 ~ +28V DC
It is recommended to use 12V or 24V
6
Communication
interface
RS232/RS485
Standard DB9 hole / 3.81 terminal block
7
Baud rate
Default 9600
From 1200 to 115200 bps
8
Address
Default 0
65536 configurable addresses
3.3 Frequency range and channels
Model
Default
frequency
Frequency range
Channel spacing
Channels
MHz
MHz
MHz
E810-DTU(433L30)
433
410~441
1
32, Half-duplex
E810-DTU(433C30)
433
425~450.5
0.1
256, Half-duplex
E810-DTU(433N30)
433
425~450.5
0.1
256, Half-duplex
★Note: In the same area when multiple data transceivers are communicating one to one at the same time, it is
recommended to set the channel spacing between each group of data transceivers at 2MHz or more.

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3.4 Transmit power level
Model
21 dBm
24 dBm
27 dBm
30 dBm
（Default）
E810-DTU(433L30)
√
√
√
√
E810-DTU(433C30)
√
√
√
√
E810-DTU(433N30)
√
√
√
√
★Note: 1. The lower the transmit power, the closer the transmission distance, but the working current won’t be declined in
exact proportion, it is recommended to use the maximum transmit power.
2. In order to guarantee the transmitting efficiency of, the factory default is the maximum transmitting power.
3.5 Air data rate
Model
Default air
data rate
Levels
Air data rate
kbps
kbps
E810-DTU(433L30)
2.4
6
0.3、1.2、2.4（default）、4.8、9.6、19.2
E810-DTU(433C30)
1.2
8
1.2（default）、2.4、4.8、9.6、19.2、38.4、50、70
E810-DTU(433N30)
1.2
8
1.2（default）、2.4、4.8、9.6、19.2、38.4、50、70
★Note: The higher the air data rate, the faster the transmission rate, the transmission distance is also closer; when the rate
meets the requirements, the lower air data rate, the better quality .
3.6 Current parameters
Model
Transmitting current（mA）
Standby current（mA）
12V
24V
12V
24V
E810-DTU(433L30)
330.0
170.0
20.0
10.0
E810-DTU(433C30)
310.0
150.0
20.0
10.0
E810-DTU(433N30)
350.0
180.0
20.0
10.0
★Note: It is recommended to retain more than 50% of the current margin when selecting the power supply, which will
help the data transceiver to work steadily for a long time.
3.7 Transceiver Length and Sub-packing Mode
Model
Buffer
Sub-packet
E810-DTU(433L30)
512 bytes
Automatically send 197 bytes per packet
E810-DTU(433C30)
512 bytes
Automatically send 197 bytes per packet
E810-DTU(433N30)
512 bytes
No limitation of packet length without
sub-packet
★Note: 1. When the receiving data is more than a single packet capacity (100 bytes), the beyond part will be
automatically assigned to the second transmission until it is completed;
2. The data transceiver can not receive data which is more than the buffer capacity;
3. If one can not determine the amount of data sent and received, it is recommended to use C series.

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4. Network basic function introduction
4.1 IP address/Subnet mask/Gateway
1. The IP address is the identity of the module in the LAN. It is unique in the LAN and cannot be duplicated with other
devices on the LAN.
E810-DTU’s IP address of E810-DTU is static IP and DHCP.
(1) Static IP
Static IP requires the user to set manually，please note that the IP, subnet mask, and gateway should be written at the same
time. Static IP is suitable for scenarios that require IP and device statistics and have a one-to-one correspondence.
Advantage: Devices which cannot automatically assign IP addresses can be searched through the entire LAN.
Disadvantages: Different IP segments in different LANs cannot carry out normal TCP/UDP communication.
(2) DHCP
The main role of DHCP is to dynamically obtain IP address, Gateway address, DNS server address and other information
from the gateway host, eliminating the cumbersome steps of setting the IP address. It is suitable for scenarios where there is
no requirement for IP and no need for correspondence one by one of IP and modules.
Advantages: When connected routers and other devices with DHCP Server can communicate directly, and reduce the
hassles of setting up IP address gateways and subnet masks.
Disadvantages: When connected LANs without DHCP Server，such as computers, E810-DTU cannot work.
2. The subnet mask is mainly used to determine the LAN number and host number of the IP address, and indicate the
number of subnets, and judge whether the module is within the subnet。The subnet mask have to be set, what we normally
use is C type subnet mask: 255.255.255.0, LAN number is the first 24 numbers, host number is the last 8 numbers, and there
are 255 subnets, If the module IP is within the 255 subnets, it is considered to be in this subnet.
3. The gateway refers to the LAN number of the LAN where the current IP address of the module is located. If a device
such as a router is connected to an external network, the gateway is the router IP address，If the setting is incorrect, the
external network cannot be accessed properly，If you do not connect a device such as a router, you do not need to set it, by
default.
4. Software setting
Figure 1 Parameter setting software

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Figure 2 Parameter setting interface
4.2 DNS server address
The DNS server is mainly used to convert the domain name into a network-recognizable IP address. DNS server
address can be set, it can implement domain name resolution when the local domain name server is not complete. Users can
also set specific DNS server addresses as required, E810-DTU will submit a resolution request to the configured DNS
server when domain name resolution is required, more flexible and reliable.
In static IP mode, the default address of the DNS master server is 61.139.2.69, and the backup DNS server address is
192.168.4.1. In DHCP mode, the DNS server address is automatically obtained. Domain name server address supported by
the module can be set.
5. Socket characteristics
The Socket operating mode of E810-DTU is divided into TCP Client, TCP Server, UDP Client, and UDP Server., it can
be set with the host computer software, the setting interface is as follows:

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Figure 3 Setting interface
5.1 TCP Server characteristics
Figure 5 TCP Server
(1) In TCP Server mode, E810-DTU monitors the local port, receiving and establishing a connection for data
communication when a connection request is sent. When the E810-DTU serial port receives data, it will transmit data to all
client devices which established a connection with the E810-DTU.
(2) It is usually used for communication with TCP clients in the LAN. Suitable for scenarios where there is no server in
the LAN and there are many computers or cellphones requesting data from the server. There is difference between

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connection and disconnection like TCP Client to ensure the reliable exchange of data.
(3) When the E810-DTU is a TCP Server, it can connect at most six clients, the local port number is a fixed value and
cannot be set to 0.
5.2 TCP Client characteristics
Figure 4 TCP Client
(1) TCP Client provides Client connectivity for TCP network services. Proactively initiates connection requests to the
server and establishes connections for the interaction of serial data and server data. According to the relevant TCP protocol,
there is difference between connection and disconnection to ensure the reliable exchange of data. It is normally used for
data exchange between devices and servers and it is the most commonly used networking communication method.
(2) In TCP Client mode, when the E810-DTU attempts to connect to the server and the local port is 0, it initiates a
connection with a random port each time.
(3) This mode supports short connection function。
(4) In the same LAN, if the E810-DTU is set to static IP, please keep the E810-DTU IP and gateway in the same
network segment and set the gateway IP correctly, otherwise it cannot communicate normally.
5.3 UDP Server characteristics
Figure 7 UDP Server
(1) UDP Server means that the source IP address is not verified on the basis of normal UDP. After each UDP packet is
received, the target IP is changed to the data source IP and port number, when the data is transmitted, it will be sent to the IP
and port number which was the nearest communication one.
(2) This mode is normally used for multiple network devices which need to communicate with the module, and do not
want to use TCP's data transmission due to fast speed and frequency.

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5.4 UDP Client characteristics
Figure 6 UDP Client
(1) UDP Client is a connectionless transmission protocol that provides a simple, unreliable information transfer service,
without connection establishment and disconnection, only IP and port are needed to send data. Generally used for data
transmission scenarios where packet loss rate is not required, data packets are small and the frequency is fast, and data is
transmitted to a specified IP.
(2) In UDP Client mode, the E810-DTU will only communicate with the target IP's target port, if the data is not from
this channel, it will not be received by the E810-DTU.
(3) In UDP Client mode, if the target address is set to 255.255.255.255, it will broadcast within the whole UDP
network segment, and it can also receive broadcast data ，E810-DTU supports broadcast within the supporting network
segment, such as the mode of xxx.xxx.xxx.255.
6. Special function
6.1 Short connection
The use of short connections is mainly to save server resources, and is generally applied to multipoint-to-point scenarios.
Short connections is to ensure that existing connections are useful connections and do not require additional controls for
filtering.
The short connection function is applied in the TCP Client mode. After the short connection function is enabled, when
sending data. If no data is received from the serial port or network port within the setting time, the connection will be
automatically disconnected. The short connection function is turned off by default, and the disconnection time can be set
after the function is turned on, the range is 2~255S.
6.2 Registration packet mechanism
In the network transparent transmission mode, users can make the module send registration packets to the server. The
registration packet is for the server to identify the data source device, or as a password to obtain server authorization.
E810-DTU has 4 registration packet mechanisms:
Sending MAC when connecting: The module will send the its own MAC address to the device when the connection is
established.
Sending user-defined data when connecting: The module sends a user-defined data to the device when the connection
is established
Each packet of data sending MAC: The module will add its MAC address in front of each frame of data sent.
Each packet of data sending user-defined data: The module will add its user-defined data in front of each frame of data
sent.

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Figure 8 Sending MAC when connecting
Figure 9 Sending user-defined data when connecting
Figure 10 Each packet of data sending MAC
Figure 11 Each packet of data sending user-defined data
Sending a registration packet when establishing a connection are mainly used to connect to a server that requires
registration. Data-carrying registration packets refers to accessing registration packets at the head of data in sending data,
which is mainly used for protocol transmission. The user-defined data packet defaults to hexadecimal data (ASCII code
optional) and the maximum packet length is 40 bytes.
6.3 Heartbeat mechanism
In the network transparent transmission mode, users can make the module send heartbeat packets to the server.
Heartbeat packets can be sent to the web server or sent to the serial device, they cannot run at the same time.
Network heartbeat pocket: The heartbeat packet is sent to the network, in the heartbeat transmission cycle, the module
sends heartbeat packet data to the network server to maintain the connection with the network server. It only runs in the TCP
Client and UDP Client modes。
Serial data packet: In the set heartbeat sending cycle, the module sends heartbeat packet data to the serial port, users
can do corresponding processing after the serial port receives the heartbeat data.
In an application in which a server sends a fixed inquiry command to a device, in order to reduce communication
traffic, users can choose to send a heartbeat packet (inquiry command) to the serial device side instead of sending a inquiry
command from the server.
User-defined data packet defaults to hexadecimal data (ASCII code optional), E810-DTU module supports custom
heartbeat packet content up to 40 bytes

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6.4 Overtime restart
Overtime restart (no data restart) function is mainly used to ensure long-term stability of E810-DTU. When the
network port cannot receive data for a long time, or if the network does not receive data for a long time, the E810-DTU will
restart after exceeding the set time, thus avoiding the influence of abnormal conditions on the communication. The normal
working time of this function is set to 60~65535S, default 300S. When the setting time is less than 60S, the default setting is
zero, that is, the function is turned off.
6.5 TCP multi-connection function
TCP multi-connection function is mainly to solve that in the TCP Sever mode, the user has multiple clients to connect
E810-DTU and send and receive data at the same time. When E810-DTU is used as a TCP Server, up to 6 connections can
be established at the same time, the TCP Server sends data to multiple (up to 6) TCP clients on the connection at the same
time. When the number of established connections exceeds six, the connection established at the beginning will be actively
disconnected, that is, the old connection will be kicked off.
6.6 Clearing cached data
When the TCP Client connection is not established, the data received by the serial port will be placed in the buffer area,
the E810-DTU serial port receive buffer is 400 bytes. When the connection is established, the serial port buffer data can be
set whether to clear according to customer needs.
6.7 Link and data transfer instructions
Link indicates the network connection status of the module. In TCP mode, when the network is not connected, the link
goes out. When the connection is established, the link is always on. Link indicator is on in UDP mode.
The other is the data transmission indication, which shows the data transmission status of the serial port of the module.
When there is no data transmission on the serial port, the data transmission indicator is extinguished. When there is data
transmission on the serial port, the flashing indicates that the period is 60ms and the indicator lit 10ms.

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7. Quick instructions
7.1 Parameter setting instructions
Figure 12 Parameter setting instructions
7.2 Socket instructions
7.2.1 TCP Server instructions
(1) Connect two E810-DTU cable to the PC. Open the network configuration software and search for the device. The
searched device will be displayed in the device list. Double-click the device to be configured in the list, enter the setting
interface, and set the module to TCP Server mode, Set the module IP address to 192.168.4.101, 192.168.4.102, set the
module's local port to 8886, set the RF parameters. After the setting is complete, click the OK button, then restart the device
and search again to see if the parameter modification was successful.

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Figure 13 Searching devices
Figure 14 Network port parameter settings
Click Read Parameters on the RF Parameter Settings interface to obtain the module's current RF parameter settings,
then you can configure the RF settings.

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Figure 15 RF Parameter configuration settings
(2) Open two network debugging assistants, set the network debugging assistant protocol type to TCP Client, the
network debugging assistant's server IP address is set to the module's IP address, the network debugging assistant's server
port is set to the module's local port, click Connect.
(3) Enter a string of data in the sending area of network debugging assistant A, click Send, you will see that network
assistant B has received the same data in the sending area of the serial port. Input a string of data in the sending area of
network debugging assistant A, network assistant B also received the data. It realizes bidirectional transparent transmission.
Figure 16 Data transparent transmission

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7.2.2 TCP Client instructions
(1) Connect two E810-DTU serial ports and network cables to PC, open the network configuration software and search
for the device. The searched device will display the device list. Double-click the device to be configured in the list and enter
the setting interface. Set the module to TCP Client mode, set the target IP address to 192.168.3.100, set the target port of
module A to 8887, the target port of module B to 8886, set the RF parameters, click the OK button after the setting is
complete, and then restart the device to search Check once to see if the parameter modification was successful.
Figure 17 Searching devices
Figure 18 Parameter settings

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Click Read Parameters on the RF Parameter Settings interface to obtain the module's current RF parameter settings.
Then you can configure the RF settings.
Figure 19 RF Parameter configuration settings
(2) Open two network debugging assistants, set the network debugging assistant protocol type to TCP Client, the
network debugging assistant's server IP address is set to the module's IP address, the network debugging assistant's server
port is set to the module's local port, click Connect.
(3) Enter a string of data in the sending area of network debugging assistant A, click Send, you will see that network
assistant B has received the same data in the sending area of the serial port. Input a string of data in the sending area of
network debugging assistant A, network assistant B also received the data. It realizes bidirectional transparent transmission.

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Figure 20 Data transparent transmission
7.2.3 UDP Server instructions
(1) Connect two E810-DTU serial ports and network cables to PC, open the network configuration software and search
for the device. The searched device will display the device list. Double-click the device to be configured in the list and enter
the setting interface. Set the module to UDP Server mode, set the target IP address to 192.168.3.100, set the target port of
module A to 8887, the target port of module B to 8886, set the RF parameters, click the OK button after the setting is
complete, and then restart the device to search Check once to see if the parameter modification was successful.
Figure 21 Searching devices

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Figure 22 Parameter settings
Click Read Parameters on the RF Parameter Settings interface to obtain the module's current RF parameter settings.
Then you can configure the RF settings.
Figure 23 RF Parameter configuration settings

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(2) Open two network debugging assistants, set the network debugging assistant protocol type to UDP Server, the
network debugging assistant's server IP address is set to the module's IP address, the network debugging assistant's server
port is set to the module's local port, click Connect.
(3) Enter a string of data in the sending area of network debugging assistant A, click Send, you will see that network
assistant B has received the same data in the sending area of the serial port. Input a string of data in the sending area of
network debugging assistant A, network assistant B also received the data. It realizes bidirectional transparent transmission.
Figure 24 Data transparent transmission
7.2.4 UDP Client instructions
(1) Connect two E810-DTU serial ports and network cables to PC, open the network configuration software and search
for the device. The searched device will display the device list. Double-click the device to be configured in the list and enter
the setting interface. Set the module to UDP Client mode, set the target IP address to 192.168.3.100, set the target port of
module A to 8887, the target port of module B to 8886, set the RF parameters, click the OK button after the setting is
complete, and then restart the device to search Check once to see if the parameter modification was successful.