EBYTE E95-DTU LoRa Wireless Modem User Manual

June 12, 2024
ebyte

EBYTE E95-DTU LoRa Wireless Modem

Product Information

Introduction
E95-DTU(433L30P-485) is a wireless data transmission DTU (Data Terminal Unit) that utilizes military-grade LoRa modulation technology. It operates at a frequency band of (410/441M) with a default frequency of 433MHz. The DTU provides a transparent RS485 interface, a plastic shell, and a rail-type installation structure. It supports a voltage input range of 8-28V DC. The use of LoRa spread spectrum technology ensures longer communication distances and strong anti-interference capability.

Features

  •  Adopts military-grade LoRa modulation technology with data encryption and configurable packet length
  • Flame-retardant plastic shell and guide rail type installation structure for convenient and efficient installation
  • Hidden buttons for switching working modes to avoid false triggers, ensuring reliability during the operation
  • Simple high-efficiency power supply design supporting power supply configuration or line pressure mode with a range of 8-28V(DC)
  • Transmit power can reach up to 30dBm and supports multi-level adjustment meeting European industrial standards
  • Supports Modbus protocol transmission
  • Supports wireless sending of command data packets for remote configuration or reading of DTU parameters
  • Supports communication key function to effectively prevent data interception
  • Working temperature range: -40°C to +85°C, suitable for various harsh working environments
  • Multiple protection functions including power pulse protection, reverse connection protection, and antenna surge protection for increased reliability
  • The communication port and power interface adopt isolation and high protection
  • Powerful software function allowing programming of all parameters such as power, frequency, air rate, address ID, etc.
  • Built-in watchdog and precise time layout for automatic restart and continuation of work in case of abnormalities

Usage Instructions

To get started with E95-DTU(433L30P-485), follow the steps below:

  1. Prepare two E95-DTU(433L30P-485) units.
  2. Install the antenna for the digital DTU.
  3. Install the power supply. Select the appropriate power adapter based on your requirements.

Disclaimer and Copyright Notice

The information in this article, including the URL address for reference, is subject to change without notice. The document is provided “as is” without any guarantee responsibility, including any guarantee for merchantability, suitability for a specific purpose, or non-infringement, and any guarantee mentioned elsewhere in any proposal, specification or sample. This document does not take any responsibility, including the responsibility for infringement of any patent rights caused by the use of the information in this document. This document does not grant any license for the use of intellectual property rights in estoppel or other ways, whether express or implied. The test data obtained in the article are all obtained by the Ebyte laboratory, and the actual results may vary slightly.

All brand names, trademarks, and registered trademarks mentioned in this article are the property of their respective owners, and it is hereby declared.

The final interpretation right belongs to Chengdu Ebyte Electronic Technology Co., Ltd.

Note:
The content of this manual may be changed due to product version upgrades or other reasons. Ebyte Electronic Technology Co., Ltd. reserves the right to modify the contents of this manual without any notice or prompt. This manual is only used as a guide. Chengdu Ebyte Electronic Technology Co., Ltd. makes every effort to provide accurate information in this manual. However, Chengdu Ebyte Electronic Technology Co., Ltd. does not guarantee that the contents of the manual are completely free of errors. All statements in this manual, Information, and suggestions do not constitute any express or implied guarantee.

Introduction

Brief Introduction
E95-DTU(433L30P-485) is a wireless data transmission DTU that uses military- grade LoRa modulation technology. It has a variety of transmission methods. It works at (410/441M) frequency band (default 433MHz). The DTU provides a transparent RS485 interface, a plastic shell. rail type installation structure, support 8~28V(DC)voltage input. LoRa spread spectrum technology will bring a longer communication distance and has the advantage of the strong anti-interference ability.

As a communication medium, wireless data transmission station has a certain scope of applications like optical fiber, microwave, and open wire: it provides real-time and reliable data transmission of monitoring signals in private networks under certain special conditions, with low cost, installation and maintenance Convenience, strong diffraction ability, flexible network structure, and long coverage, suitable for many and scattered locations, complex geographical environment and other occasions, can be connected with PLC, RTU, rain gauge, level gauge and other data terminals.

Features
  • Adopt military-grade LoRa modulation technology, with data encryption, and the packet length can be set;
  • Adopt flame-retardant plastic shell, guide rail type installation structure, convenient and efficient installation;
  • Hidden buttons are used to switch working modes to avoid false triggers, and the equipment is more reliable in operation;
  • Simple high-efficiency power supply design, support power supply configuration or line pressure mode, support 8- 28V(DC)power supply;
  • The transmit power can reach up to 30dBm, and supports multi-level adjustment. All technical indicators meet European industrial standards;
  • Support Modbus protocol transmission;
  • Support wireless sending of command data packets, remote configuration or reading of DTU parameters;
  • Support communication key function, effectively prevent data from being intercepted;
  • Working temperature range: -40℃~+85℃, adapt to various harsh working environments;
  • Multiple protection functions such as power pulse protection, reverse connection protection, and antenna surge protection increase the reliability of the DTU;
  • The communication port and power interface adopt isolation and high protection;
  • Powerful software function, all parameters can be set by programming: such as power, frequency, air rate, address ID, etc.;
  • Built-in watchdog and precise time layout. Once an abnormality occurs, the DTU will automatically restart and continue to work according to the previous parameter settings.

Quick Star

  1. You need to prepare two E95-DTU(433L30P-485)EBYTE-E95-DTU-LoRa-Wireless-Modem-fig- \(1\)
  2. First install the antenna for the digital DTU, and then install the power supply. The user selects the power adapter for power supply according to the needs.EBYTE-E95-DTU-LoRa-Wireless-Modem-fig- \(2\)
  3. Use USB to RS485 or other methods to connect the computer to the digital DTU.EBYTE-E95-DTU-LoRa-Wireless-Modem-fig- \(3\)
  4. Start two serial port debugging assistants, select the serial port baud rate to be 9600bps (default), and the check method to be 8N1 to make serial port transparent transmission.EBYTE-E95-DTU-LoRa-Wireless-Modem-fig- \(4\)
  5. If the customer needs to switch the working mode, it can be controlled by the Mode button to switch between different working modes (M0 indicator, M1 indicator). Hold and press the Mode button for 1 second and release it to switch the mode once. The mode-switching details are shown in the table below:

No.

| ****

Type

| ****

M1

| ****

M0

| ****

Description

---|---|---|---|---


Mode 0

| Transparent Transmission

Mode

| ****

Light Off

| ****

Light Off

| ****

Serial port open, wireless open, transparent transmission (factory default mode)


Mode 1

| ****

WOR Mode

| Light

Off

| Light

On

| ****

WOR transmission mode, data packet comes with wake-up code


Mode 2

| Power Saving

Mode

| Light

On

| Light

Off

| WOR receiving mode, saving its own receiving power

consumption, this mode cannot transmit


Mode 3

| Configuration

Mode

| Light

On

| Light

On

| ****

The DTU can be programmed using the configuration software

Note:
The DTU has a power-down save mode function (the factory default setting is transparent transmission mode), the user needs to switch the corresponding mode according to the M1 and M0 indicators (effective immediately).

Interface Description

EBYTE-E95-DTU-LoRa-Wireless-Modem-fig- \(5\)

Technical Index

Model specifications

Model

|

Working Frequency

| Tra nsmi t   Pow

er

|

Distance

|

Specifications

|

Recommended Application Scenarios

---|---|---|---|---|---
M Hz| dBm| km

E95-DTU(433L20-485)

| 410 ~

441

|

20

|

3

| LoRa Spread spectrum

anti-interference、DC power supply

| Suitable for small data

volume and long-distance application.

E95-DTU(433L20-232)| 410 ~

441

| 20| 3| LoRa Spread spectrum

anti-interference、DC power

| Suitable for small data

volume and long-distance

        supply application.

E95-DTU(433L30-485)

| 410 ~

441

|

30

|

8

| LoRa Spread spectrum

anti-interference、DC power supply

| Suitable for small data volume and long-distance

application.

E95-DTU(433L30-232)

| 410 ~

441

|

30

|

8

| LoRa Spread spectrum

anti-interference、DC power supply

| Suitable for small data

volume and long-distance application.

E95-DTU(433L20P-48 5)

|

410 ~

441

|

20

|

3

| LoRa Spread spectrum

anti-interference、DC power supply、

Isolated version

| Suitable for small data volume, long-distance application, high

protection.

E95-DTU(433L20P-23 2)

|

410 ~

441

|

20

|

3

| LoRa Spread spectrum

anti-interference、DC power supply、

Isolated version

| Suitable for small data volume, long-distance application, high

protection.

E95-DTU(433L30P-48 5)

|

410 ~

441

|

30

|

8

| LoRa Spread spectrum

anti-interference、DC power supply、

Isolated version

| Suitable for small data volume, long-distance application, high

protection.

E95-DTU(433L30P-23 2)

|

410 ~

441

|

30

|

8

| LoRa Spread spectrum

anti-interference、DC power supply、

Isolated version

| Suitable for small data volume, long-distance application, high

protection.

E96-DTU(433L20-485)

| 410 ~

441

|

20

|

3

| LoRa Spread spectrum

anti-interference、AC power supply、

| Suitable for small data volume, long-distance

application

E96-DTU(433L20-232)

| 410 ~

441

|

20

|

3

| LoRa Spread spectrum

anti-interference、AC power supply、

| Suitable for small data volume, long-distance

application

E96-DTU(433L30-485)

| 410 ~

441

|

30

|

8

| LoRa Spread spectrum

anti-interference、AC power supply、

| Suitable for small data volume, long-distance

application

E96-DTU(433L30-232)

| 410 ~

441

|

30

|

8

| LoRa Spread spectrum

anti-interference、AC power supply、

| Suitable for small data volume, long-distance

application

Note:
In fine weather, open environment without obstruction, 12V/1A power supply, 5dBi suction cup antenna, the antenna is 2 meters above the ground, and the factory default parameters are used.

General specifications
No. Terms Specifications Description
1 Size 926730 mm Review installation dimensions for details
2 Weight 95 g Weight tolerance 5g
3 Working

Temperature

| -40℃~+85℃| Meet the needs of industrial use
4| Voltage Range| 8~28V(DC)| It is recommended to use 12V or 24V for DC
5| Interface| RS485| RS485, subject to product identification
6| Baud Rate| Default 9600| Baud rate range 1200~115200
7| Address Code| Default 0| A total of 65536 address codes can be set

Frequency range and channel number

Model

| Default

Frequency

|

Frequency Range

| Channel

Spacing

|

Number of Channels

---|---|---|---|---
Hz| Hz| Hz
E95-DTU(433L30P-485)| 433M| 410~441M| 1M| 32,Half Duplex

Transmit power level

Model

|

30dBm

|

17dBm / 27dBm

|

13dBm / 24dBm

|

10dBm / 21dBm

---|---|---|---|---
E95-DTU(433L30P-485)| Factory Default| √| √| √

Note:
The lower the transmission power, the closer the transmission distance, but the working current will not decrease in the same proportion. It is recommended to use the maximum transmission power.

Air speed class

Model

| Default Air Rate|

Level

| Air Speed Class
---|---|---|---
bps| bps
E95-DTU(433L30P-485)| 2.4k| 6| 0.3k、1.2k、2.4k、4.8k、9.6k、19.2k

The higher the air speed setting, the faster the transmission rate and the shorter the transmission distance; therefore, when the speed meets the requirements of use, it is recommended that the airspeed be as low as possible.

Function Details

Point-to-Point transmission (hexadecimal)

EBYTE-E95-DTU-LoRa-Wireless-Modem-fig- \(6\)

Broadcast transmission (hexadecimal)

EBYTE-E95-DTU-LoRa-Wireless-Modem-fig- \(7\)

Broadcast address

  • Example: Set the address of DTU A to 0xFFFF and the channel to 0x04.
  • When DTU A is used as a transmitter (same mode, transparent transmission mode), all receiving DTU under the 0x04 channel can receive data to achieve the purpose of broadcasting.

Listening address

  • Example: Set the address of DTU A to 0xFFFF and the channel to 0x04.
  • When DTU A is receiving, it can receive all the data under channel 0x04 to achieve the purpose of monitoring.

Operating Mode

E95-DTU has four working modes. When there is no demanding low power consumption requirement, it is recommended to configure the DTU to transparent transmission mode (mode 0) if normal communication is required; The default setting of the DTU at the factory is transparent transmission mode (mode 0).

No.

|

Type

|

M1

|

M0

|

Description

---|---|---|---|---

Mode 0

| Transparent

transmission mode

|

Light Off

|

Light Off

|

Serial port open, wireless open, transparent transmission (factory default mode)

Mode 1

|

WOR Mode

| Light

Off

| Light

On

|

WOR transmission mode, data packet comes with wake-up code

Mode 2

| Power Saving

Mode

| Light

On

| Light

Off

| WOR receiving mode, saving its own receiving power

consumption, this mode cannot transmit

Mode 3

| Configuration

Mode

| Light

On

| Light

On

|

The DTU can be programmed using the configuration software

Transparent transmission mode (mode 0)

Type

|

When the M0 indicator light is off and the M1 indicator light is off, the DTU is working in mode 0

---|---

Sending

|

Users can input data through the serial port, and the DTU will start wireless transmission.

Receiving

| The DTU receiving function is turned on, and after receiving the wireless data, it will be output through the serial port TXD pin.

WOR mode (mode 1)

Type| When the M0 indicator light is on and the M1 indicator light is off, the DTU is working in mode 1
---|---
Description| WOR transmission mode, data packet comes with wake-up code

Power Saving mode (mode 2)

Type| When the M0 indicator light is off and the M1 indicator light is on, the DTU is working in mode 2
---|---
Description| WOR receiving mode, saving its own receiving power consumption, this mode cannot transmit

Configuration mode (mode 3)

Type| When the M0 indicator light is on and the M1 indicator light is on, the DTU is working in mode 3
---|---
Description| The DTU can be programmed using the configuration software

PC Configuration Instruction

The following figure shows the display interface of the E95-DTU(433L30P-485) configuration host computer. The user can switch to the configuration mode through the MODE button, and quickly configure and read the parameters on the host computer.

EBYTE-E95-DTU-LoRa-Wireless-Modem-fig- \(8\)

Program the DTU

EBYTE-E95-DTU-LoRa-Wireless-Modem-fig- \(9\)

Operating Mode M1 M0 Remark
Configuration mode Light On Light Off Only use the configuration software

to program the DTU in the current mode

  1. Programming can only be carried out in a specific working mode (see the above table). If the programming fails, please confirm whether the working mode of the DTU is correct.
  2. If you don’t need complicated programming to open the E95-DTU (433L30P-485) configuration software, you can modify the relevant parameters.

Related Products


Model

| ****

Interface Type

| ****

Frequency Hz

| Transmit power

dBm

| Dista nce

km

| ****

Features

---|---|---|---|---|---


E95-DTU(433L20-485)

| ****

RS485

| ****

410

| ****

| ****

441

| ****

20

| ****

3

| Cost-effective LoRa, rail type, RS485,

E90-DTU L series intercommunication, DC power supply


E95-DTU(433L20-232)

| ****

RS232

| ****

410

| ****

| ****

441

| ****

20

| ****

3

| Cost-effective LoRa, rail type, RS232,

E90-DTU L series intercommunication, DC power supply


E95-DTU(433L30-485)

| ****

RS485

| ****

410

| ****

| ****

441

| ****

30

| ****

8

| Cost-effective LoRa, rail type, RS485,

E90-DTU L series intercommunication, DC power supply


E95-DTU(433L30-232)

| ****

RS232

| ****

410

| ****

| ****

441

| ****

30

| ****

8

| Cost-effective LoRa, rail type, RS232,

E90-DTU L series intercommunication, DC power supply


E95-DTU(433L20P-485)

| ****

RS485

| ****

410

| ****

| ****

441

| ****

20

| ****

3

| Cost-effective LoRa, rail type, RS485,

E90-DTU L series intercommunication, high protection, DC power supply


E95-DTU(433L20P-232)

| ****

RS232

| ****

410

| ****

| ****

441

| ****

20

| ****

3

| Cost-effective LoRa, rail type, RS232,

E90-DTU L series intercommunication, high protection, DC power supply


E95-DTU(433L30P-485)

| ****

RS485

| ****

410

| ****

| ****

441

| ****

30

| ****

8

| Cost-effective LoRa, rail type, RS485,

E90-DTU L series intercommunication, high protection, DC power supply


E95-DTU(433L30P-232)

| ****

RS232

| ****

410

| ****

| ****

441

| ****

30

| ****

8

| Cost-effective LoRa, rail type, RS232,

E90-DTU L series intercommunication, high protection, DC power supply


E96-DTU(433L20-485)

| ****

RS485

| ****

410

| ****

| ****

441

| ****

20

| ****

3

| Cost-effective LoRa, rail type, RS485,

E90-DTU L series intercommunication, AC power supply


E96-DTU(433L20-232)

| ****

RS232

| ****

410

| ****

| ****

441

| ****

20

| ****

3

| Cost-effective LoRa, rail type, RS232,

E90-DTU L series intercommunication, AC power supply


E96-DTU(433L30-485)

| ****

RS485

| ****

410

| ****

| ****

441

| ****

30

| ****

8

| Cost-effective LoRa, rail type, RS485,

E90-DTU L series intercommunication, AC power supply

---|---|---|---|---|---|---|---


E96-DTU(433L30-232)

| ****

RS232

| ****

410

| ****

| ****

441

| ****

30

| ****

8

| Cost-effective LoRa, rail type, RS232,

E90-DTU L series intercommunication, AC power supply

Precautions for Use

  1. Please take good care of the warranty card of the device. The warranty card contains 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, if the DTU is damaged due to the quality of the product itself rather than man-made damage or natural disasters such as lightning strikes, it enjoys free warranty; please do not repair by yourself, and contact our company if there is a problem. Ebyte provides first-class After-sales service.
  3. Do not operate this DTU 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 that the DTU is normal jobs.
  5. Do not use it in a working environment that exceeds the environmental characteristics of the DTU, such as high temperature, humidity, low temperature, strong electromagnetic field or dusty environment.
  6. Don’t let the DTU continuously be in full load transmitting state, otherwise the transmitter may be burnt out.
  7. The ground wire of the DTU should be well connected with the ground wire of the external equipment (such as PC, PLC, etc.) and the ground wire of the power supply, otherwise the communication interface will be burnt easily; do not plug or unplug the serial port with power on.
  8. When testing a DTU, you must connect a matching antenna or a 50Ω dummy load, otherwise the transmitter will be easily damaged; if the antenna is connected, the distance between the human body and the antenna should be more than 2 meters to avoid injury. Touch the antenna when transmitting.
  9. Wireless data transmission stations 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 more than 50% The communication distance margin.
  10. 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 support@cdebyte.com for help.
  11. When selecting the power supply, in addition to keeping 50% of the current margin as recommended, it should also be noted that its ripple must not exceed 100mV.
  12. Wireless communication products need to be connected to an impedance-matched antenna to work normally. Even short-term tests cannot be omitted. Product damage caused by this reason will not be covered by the warranty.

Important Statement

  1. Ebyte reserves the right of final interpretation and modification of all contents in this manual.
  2. Due to the continuous improvement of product hardware and software, this manual may be changed without prior notice. The latest version of the manual shall prevail.
  3. It is everyone’s responsibility to protect the environment: In order to reduce the use of paper, this manual only prints the Chinese part, and the English manual only provides electronic documents. If necessary, please download it from our official website; in addition, if not specifically requested by the user, the user can order in bulk At the time, we only provide product manuals according to a certain percentage of the order quantity, not every DTU is matched with it, please understand.

Revision History

Version Date Description Issued By
1.0 2020-08-17 Original Version ken
1.1 2021-02-05 L series integration ken

About us

Thank you for using Ebyte products!
Please contact us with any questions or suggestions: info@cdebyte.com.
Official Hotline: 028-61399028
Web: www.ebyte.com
Address: B5 Mould Park, 199# Xiqu Ave, High-tech District, Sichuan, China.

Copyright ©2012–2021, Chengdu Ebyte Electronic Technology Co., Ltd.

References

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