Ebyte E842-DTU Manual de usuario

Contents

1. Overview.................................................................................................................................. 错误！未定义书签。

1.1 Product Introduction.......................................................................................................错误！未定义书签。

1.2 Features...........................................................................................................................错误！未定义书签。

1.3 Application scenario.......................................................................................................错误！未定义书签。

2. Specifications........................................................................................................................... 错误！未定义书签。

2.1 Limit parameters.............................................................................................................错误！未定义书签。

2.2 Working parameters........................................................................................................错误！未定义书签。

3. Mechanical size and pin definition.......................................................................................... 错误！未定义书签。

4. Quick start and function introduction...................................................................................... 错误！未定义书签。

Quick start............................................................................................................................ 错误！未定义书签。

4.1 Hardware preparation.....................................................................................................错误！未定义书签。

4.2 Network transparent transmission mode........................................................................错误！未定义书签。

4.3 MQTT model..................................................................................................................错误！未定义书签。

Function introduction........................................................................................................... 错误！未定义书签。

4.4 ModBus TCP to RTU function.......................................................................................错误！未定义书签。

4.5 Serial port packaging function....................................................................................... 错误！未定义书签。

4.6 Network AT function......................................................................................................错误！未定义书签。

4.7 Register package function.............................................................................................. 错误！未定义书签。

4.8 Heartbeat packet function.............................................................................................. 错误！未定义书签。

4.9 Serial port upgrade......................................................................................................... 错误！未定义书签。

5. Precautions............................................................................................................................... 错误！未定义书签。

6. Related Products.......................................................................................................................错误！未定义书签。

Revision history............................................................................................................................错误！未定义书签。

About us........................................................................................................................................错误！未定义书签。

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1. Overview

1.1 Introduction to the product

The E842-DTU (EC03-485) is a cost-effective 4G DTU developed using 4G CAT1 technology. The main

function is to realize the two-way transparent transmission of serial device and network server. The RS485

interface is used to support 85to265VAC voltage inputs. No communication distance limit, and has a wide

network coverage, strong anti-jamming ability advantages. Easy integration into IoT projects.

The equipment is mounted in a rail-type manner, which is small in size and easy to install. Set up with

simple AT instructions, or you can use configuration software settings to easily use this product for two-way data

transparent transmission from serial to network in just a few steps.

Devices support multiple links, MQTT protocols, APN/VPN, Access to OneNet, Baidu, Alibaba Cloud, and the Internet of Things.

Supports automatic conversion of Modbus RTUs and Modbus TCP to each other.

1.2 Features

Use a 4G CAT1 solution

Ability to meet almost all M2M application needs;

Supports transparent data transfer

Supports TCP,UDP network protocols

Support heartbeat package, registration package;

Supports network configuration parameters;

Supports simultaneous sending and receiving of 2 Socket links;

Supports automatic conversion of Modbus RTUs and Modbus TCP to each other;

Support MQTT protocol, support access to oneNet platform, Baidu cloud platform, Alibaba cloud platform MQTT services;

SUPPORT for APN/VPN;

Support for serial upgrade;

Support network AT instructions, through the network, remote configuration of devices;

The use of flame retardant plastic housing, rail-type installation structure, installation is convenient and efficient;

Power reverse protection, over-connected protection, antenna surge protection and other multiple protection functions to

enhance the reliability of the station;

Communication ports, power interfaces using isolation high protection;

Operating temperature range: -40degrees C to85degrees C, adapted to a variety of harsh working conditions

1.3 Scenario

Smart home and industrial sensors, etc.

Security system, positioning system;

Agricultural collection;

Healthcare products;

Automotive applications.

2. Specifications

2.1 Limit parameters

The main parameter

performance

remark

minimum

maximum

Supply voltage(V).

265

110V or 220V is recommended

Operating temperature (sc).

-40

+85

Industrial grade

2.2 Working parameters

The name of the

argument

The value of

the argument

description

The attribute

parameters

Support for

bands

LTE-TDD: B34/B38/B39/B40/B41

LTE-FDD:

B1/B3/B5/B8

Network

protocol

characteristics

Supports the TCP/UDP/MQTT protocol

Hardware features

Antenna

interface

SMA-K

The power

interface

5.08 Terminals

The

communication

interface

RS485

baud rate

Supports a maximum of 921600bpsand a default of 115200bps

weight

95g tolerance ± 5g

size

92×62×30mm

3. Mechanical dimensions and pin definitions

number

The pin

name

Pin use

485_A

The A side of the other RS485 devices that are external

485_B

The B side of the other RS485 devices that are external

GND

earthing

PWR

Power LED

Power adapter interface, power supply range 8to28VD C;

Restore

The station restores factory settings

When the Restore dial continues down 3to10S, dial up to restore the radio

parameters to the factory settings

YES

Sim card slot

Antenna interface(SMA-K outer thread inner hole,50o characteristic impedance).

serial

number

name

function

illustrate

Restore

The factory reset

button

Press and hold 8S to restore the factory settings

RF interface

SMA-K,outer thread inner hole, feature impedance of

50Ω

The power interface

AC 85-265V power input port (E842),5.08mm wired

port

RS4852

RS485

The communication

port

A to the A side of the RS485 device, B to the B side

of the RS485 device, andG ND to the external device

PWR

Power LED

Lit when the power is on

STATE

The in-network status

indicator

Flashing: Power to the search network on the device

Solid: The device is successfully attached to the network

DATA

Data transceiver

indicator

Send/receive data flashing

LINE

The data link light

Solid:SocketA connects to the network server

successfully

Normally out:SocketA's connection to the network

server was not successful

LINKB

The data link light

Solid:The SocketB connected to the network server

successfully

Normally out:The SocketB connection to the network

server was not successful

Chengdu Yiyit Electronic Technology Co., Ltd E842-DTU（EC03-485)User manual

4. Quick start and feature introduction

Get started quickly

4.1 Hardware preparation

This test requires the following devices to be prepared:

Before testing, plug in the SIM card, connect the USB to RS485 serial cord, connect the antenna, and finally power on.

(At this point the PWR light goes on and theWORK light lights up after a few decades).

(The computer needs to install USB re-serial driver first, download the parameter configuration software in advance, you

can go to our official website to download).

4.2 Network transmission mode

Open the parameter configuration software

1、Select the appropriate port number

2、Select Baud Rate 115200(factory default).

3、Select Check, Data, Stop None,8,1(factory default).

4、Open the serial port

5、Click to enter configuration mode

6、Modify the server address or IP,port, connection type (in this case, the E.U.S. test server, you can fill in the

corresponding server information).

7、Click to save all parameters

8、Click on the module restart (at which point WORK,NET, etc. flashes and turns off to indicate a successful restart).

Chengdu Yiyit Electronic Technology Co., Ltd E842-DTU（EC03-485)User manual

9、Mobile phone attention to "E-Yi Special Internet of Things application experts" WeChat public number

10、Click on Customer Support

11、Click on the device test

12、After popping up the interface, click Continue access (go to the Step 6 server test interface).

13、The phone sends data and the device receives it

14、Device send data, mobile phone reception, two-way testing normal

4.3 MQTT mode

Open the parameter configuration software

1, select the appropriate port number

2, select Baud Rate 115200(factory default).

3, select check, data, stop bit None,8,1(factory default).

4, open the serial port

5, click to enter the configuration mode

Chengdu Yiyit Electronic Technology Co., Ltd E842-DTU（EC03-485)User manual

6、Click on MQTT mode

7、Select the corresponding cloud platform (standard MQTT protocol platform select Baidu cloud).

8、Fill in the device name, username, password, address, port, subscription, publish, and subscription publishing message

level

9、(Alibaba Cloud is the product key, device name, device key, address, port, subscription, publish, and subscription publishing

level.)

10、ONENET is the device ID,product ID,authentication information, address, port, subscription, publication, and subscription

publishing message level).

11、Click to save all parameters

12、Click the device to restart

Introduction to the feature

4.4 ModBus TCP to RTU feature

When this option is turned on using parameter configuration software, the ModBus TCP and RTU are automatically

converted.

When the device receives the data, it will detect whether the data meets the Modbus RTU or ModbusTCP protocol, and

if it does, start the conversion function or output the original data.

The device serial receives ModbusT RTU instructions in the following format(16 feed):

01 06 00 01 01 19 CA(ModbusT RTU),when the conversion is turned on, the server receives data for:00 00 00 00 00 06

01 06 00 01 00 01 01(ModbusT TCP).

The network side receives data as:00 00 00 00 00 06 01 06 00 01 00 01(ModbusT TCP)andthe device serial endoutputs

the data as:

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