Ebyte E92-DTU Bedienungsanleitung

E92-DTU(2G4HD12)

Chengdu Ebyte Electronic Technology Co.,Ltd. E92-DTU(2G4HD12) User Manual

Contents

Disclaimer............................................................................................................................................................. 2

1 Overview............................................................................................................................................................3

1.1 Brief Introduction........................................................................................................................................3

1.2 Features....................................................................................................................................................... 3

2 Quick Start......................................................................................................................................................... 4

User needs to prepare below parts:................................................................................................................... 4

3 Size.....................................................................................................................................................................6

4 Parameters..........................................................................................................................................................7

4.1 Model details...............................................................................................................................................7

4.2 Regular parameters......................................................................................................................................7

4.3 Frequency range and Channels................................................................................................................... 7

4.4 Electronic parameters..................................................................................................................................8

4.5 Default parameters...................................................................................................................................... 8

5 Detailed function................................................................................................................................................8

5.1 Point-to-point communication mechanism................................................................................................. 8

5.2 Full duplex/high-speed continuous transmission........................................................................................8

6 Similar products................................................................................................................................................. 9

7 User Notes and Safety Notice............................................................................................................................ 9

Copyrights Notice............................................................................................................................................... 10

Revision history.................................................................................................................................................. 10

About us..............................................................................................................................................................10

Chengdu Ebyte Electronic Technology Co.,Ltd. E92-DTU(2G4HD12) User Manual

Disclaimer

EBYTE reserves all rights to this document and the information contained herein.

Products, names, logos and designs described herein may in whole or in part be

subject to intellectual property rights. Reproduction, use, modification or disclosure to

third parties of this document or any part thereof without the express permission of

EBYTE is strictly prohibited.

The information contained herein is provided “as is” and EBYTE assumes no

liability for the use of the information. No warranty, either express or implied, is given,

including but not limited, with respect to the accuracy, correctness, reliability and

fitness for a particular purpose of the information. This document may be revised by

EBYTE at any time. For most recent documents, visit www.ebyte.com.

Chengdu Ebyte Electronic Technology Co.,Ltd. E92-DTU(2G4HD12) User Manual

1 Overview

1.1 Brief Introduction

E92-DTU (2G4HD12) is a high-quality wireless bridge for RS485 with IP67 protection capability, which can be

applied to industrial occasions with complex electromagnetic environment and a variety of outdoor environments. This

bridge has the characteristics of low delay, full duplex, automatic frequency hopping, high-speed continuous transmission,

etc. Its strong anti-interference ability makes wireless communication more stable and reliable.

E92-DTU (2G4HD12) is a point-to-point, frequency hopping, continuous transmission, duplex wireless RS485

bridge, working in the free 2.4G frequency band around the world. The transmission power of the bridge is 12dBm,

supports transparent transmission, provides RS485 interface, and supports 8~28 V voltage input. Wireless transceiver has

CRC check, FEC (forward error correction), packet loss retransmission and other technologies, plus automatic frequency

hopping technology, so even in the case of sudden interference, it is almost unaffected, greatly improving the reliability

of wireless transmission And transmission distance. The radio has a two-way continuous transmission function, without

paying too much attention to the sub-packet length, and can send data through the interface at any time.

1.2 Features

Using automatic frequency hopping technology, it has strong anti-interference ability and stable communication;

Support two-way continuous data transmission function;

4-level port protection capability; IP67 protection;

Simple and high-efficiency power supply design, support power supply configuration or crimping mode, support 8

~ 28V power supply;

The transmit power can reach up to 12dbm, and all technical indicators meet European industrial standards;

Working temperature range: -40℃～+85℃, can adapt to various harsh working environments, real industrial grade

products;

Compact size, easy installation, good heat dissipation; perfect shielding design, good electromagnetic compatibility,

strong anti-interference ability;

Multiple protection functions such as power reverse connection protection, over-connection protection, antenna

surge protection, etc., greatly increase the reliability of the radio;

Simple and easy to use, wireless communication can be carried out after factory power-on and connection is

successful;

Built-in hardware watchdog and precise time layout. Once an exception occurs, the module will automatically

restart and continue to work according to the previous parameter settings.

Chengdu Ebyte Electronic Technology Co.,Ltd. E92-DTU(2G4HD12) User Manual

2 Quick Start

User needs to prepare below parts:

1. First install the power supply for the two RS485 bridges, the red wire is connected to the positive pole of the DC

power supply, and the black wire is connected to the negative pole of the DC power supply.

2. Use USB to RS-485 to connect the computer to the RS485 bridge (brown wire is 485A+, blue wire is 485B-); then

power on the radio, the radio will automatically establish a connection with another radio.

8～28V DC

regulated power

supply

Chengdu Ebyte Electronic Technology Co.,Ltd. E92-DTU(2G4HD12) User Manual

3. Start two serial port debugging assistants, connect two RS485 network bridges respectively, select the default serial

port baud rate of 9600bps, and the check method is 8N1, open the serial port, and the serial port transparent transmission

can be realized.

4. If the customer needs to modify the parameters, please disassemble the RS485 bridge, switch the module inside to the

configuration mode and connect to the computer, open the E92-DTU(HD) RS485 bridge configuration software, you can

modify the relevant parameters and complete the configuration. The DIP switch status must be restored before

communication can be carried out.

Transceiving Mode

Configuration Mode

Chengdu Ebyte Electronic Technology Co.,Ltd. E92-DTU(2G4HD12) User Manual

3 Size

Chengdu Ebyte Electronic Technology Co.,Ltd. E92-DTU(2G4HD12) User Manual

4 Parameters

4.1 Model details

Model

Freq.

TX Power

Test range

feature

Application features

dBm

E92-DTU(2G4HD12)

2.4G

1200

Point-to-point frequency hopping

Bidirectional continuous transmission

Suitable for environments

with long communication

distances and susceptible to

interference

★Test range conditions: sunny and clear sky, test environment is open without obstruction, 12V/1A power supply, the

device is 2 meters above the ground, and the default parameters are used.

4.2 Regular parameters

No.

Name

Value

Description

Product Size

228*228*68 mm

See installation dimensions for details

Product Weight

1700g

Operating

temperature

-40℃～+85℃

Meet the need of industrial use

Voltage range

8～28V DC

Recommend to use 12V or 24V

Communication

Interface

RS485

3.81 Terminal block

Baud rate

Default 9600

Baud rate range 1200～3M

4.3 Frequency range and Channels

Mode

Main Freq.

Range

Channel Width

Channels

E92-DTU(2G4HD12)

2.4G

2.4～2.48G

80（full duplex）

Chengdu Ebyte Electronic Technology Co.,Ltd. E92-DTU(2G4HD12) User Manual

4.4 Electronic parameters

Mode

Ave. Tx Current mA

Ave. Standby Current mA

12V

24V

12V

24V

E92-DTU(2G4HD12)

★Note: 12V transient transmission MAX current: 66mA, 24V transient transmission MAX current: 33mA, it is

recommended to keep ≥50% MAX current margin when selecting the power supply, which is conducive to the long-term

stable operation of the radio.

4.5 Default parameters

Port rate

9600 bps

Proofread

Flow Control

0（closed）

Communication link

5 Detailed function

5.1 Point-to-point communication mechanism

The valid range of communication link value is 1 to 9999, which can be set by AT command or upper computer. The

factory default setting of the communication link value is "1";

If the connection is disconnected due to power failure, excessive distance, or strong interference, it is recommended

to adjust the distance appropriately or avoid obstacles, and the radio enters the search state again until it searches for

the device with the same link and establishes a connection.

If there are two or more E92-DTU (2G4HD12) bridges with the same communication link, and they are powered on

at the same time, a random connection will be established in pairs. If it involves multiple bridge applications, it is

recommended to configure the link value of each pair of bridges in advance to distinguish them.

5.2 Full duplex/high-speed continuous transmission

During two-way communication, especially when transferring files, the channel resources occupied by the two ends

are different, which will cause the transmission rate of one end to be slower than the other end, which is normal;

During continuous data transmission, such as sending large files, to make full use of the transmission rate, please

ensure that the data stream is continuous. Frequent small data frame breaks may reduce wireless transmission

efficiency.

Chengdu Ebyte Electronic Technology Co.,Ltd. E92-DTU(2G4HD12) User Manual

6 Similar products

Mode

Interface

Freq.(Hz)

Tx Power

Test

Range

Main Features

E34-DTU(2G4H27)

RS232/RS485

2.4G

27dBm

5km

Automatic frequency hopping,

retransmission of lost packets

E34-DTU(2G4H20)

RS232/RS485

2.4G

20dBm

2.5km

Automatic frequency hopping,

retransmission of lost packets

E90-DTU(2G4HD12)

RS232/RS485

2.4G

12dBm

800m

Point-to-point frequency modulation,

two-way continuous transmission

E90-DTU(2G4L27)

RS232/RS485

2.4G

27dBm

8km

LoRa anti-interference, support LBT

7 User Notes and Safety Notice

1. Please take good care of the warranty card of the device. The warranty card has the factory number (and important

technical parameters) of the device, which has important reference value for the user's future maintenance and new

equipment.

2. During the warranty period of the radio station, if the product is damaged due to the quality of the product itself rather

than man-made damage or natural disasters such as lightning strikes, it enjoys a free warranty; please do not repair it by

yourself, and contact our company if there is a problem, which is provided by Ebyte First-class after-sales service.

3. Do not operate this radio in the vicinity of some flammable places (such as coal mines) or explosive dangerous objects

(such as detonators for detonation).

4. A suitable DC stabilized power supply should be selected, which requires strong anti-high frequency interference,

small ripple, and sufficient load capacity; preferably, it should also have over-current, over-voltage protection and

lightning protection functions to ensure RS485 network The bridge works normally.

5. Do not use it in a working environment that exceeds the environmental characteristics of the RS485 bridge, such as

high temperature, humidity, low temperature, strong electromagnetic field or dusty environment.

6. Don't let the RS485 bridge continuously be in the full-load transmission state, otherwise the transmitter may be burned

out.

7. Wireless RS485 bridges often have different communication distances in different environments. The communication

distance is often affected by temperature, humidity, obstacle density, obstacle volume, and electromagnetic environment;

in order to ensure stable communication, it is recommended to reserve 50 % Or more of the communication distance

margin.

8. If the measured communication distance is not ideal, it is recommended to analyze and improve the communication

distance from the antenna quality and antenna installation method. You can also contact suppo[email protected] for help.

9. When selecting the power supply, in addition to retaining 50% of the current margin as recommended, it should be

noted that its ripple should not exceed 100mV.

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