Ebyte E810-DTU Manual de usuario

E810-DTU(CAN-RS485)

Intelligent Protocol Converter

Chengdu Ebyte Electronic Technology Co.,LTD E810-DTU(CAN-RS485) User Manual

Contents

1. OVERVIEW..................................................................................................................................... 4

1.1 Brief Introduction........................................................................................................................................................... 4

1.2 Feature............................................................................................................................................................................. 4

1.3 Application...................................................................................................................................................................... 4

2. TECHNICAL PARAMETERS AND SPECIFICATION............................................................ 5

2.1 Basic parameter.............................................................................................................................................................. 5

2.2 Factory default parameter............................................................................................................................................. 5

3 HARDWARE DESIGN INTRODUCTION................................................................................... 6

3.1 Design introduction.........................................................................................................................................................6

3.2 Dimension....................................................................................................................................................................... 8

3.3 Connection method......................................................................................................................................................... 9

3.3.1 RS485 connection method.........................................................................................................................................9

3.3.2 CAN connection method......................................................................................................................................... 10

4 MODE INTRODUCTION.............................................................................................................10

4.1 Operating mode.............................................................................................................................................................10

4.2 Data conversion method...............................................................................................................................................10

4.2.1Transparent conversion mode...................................................................................................................................11

4.2.2 Transparent band information conversion............................................................................................................... 14

4.2.3 Protocol mode..........................................................................................................................................................17

4.2.4 Modbus mode.......................................................................................................................................................... 19

5 OPERATION INSTRUCTIONS...................................................................................................22

5.1 Entering Command Configuration Instructions....................................................................................................... 22

5.2 Command overview...................................................................................................................................................... 22

5.3 Command error code....................................................................................................................................................22

Chengdu Ebyte Electronic Technology Co.,LTD E810-DTU(CAN-RS485) User Manual

5.4 Command list................................................................................................................................................................ 23

5.5 Command details.......................................................................................................................................................... 23

5.5.1 AT test command................................................................................................................................................... 23

5.5.2 AT+CANFLT Inquire/set CAN filter info............................................................................................................ 23

5.5.3 AT+CAN inquire/set transmitted CAN parameter info...........................................................................................24

5.5.4 AT+EXAT exit AT command..................................................................................................................................24

5.5.5 AT+E inquire/set command echo mode...................................................................................................................24

5.5.6 AT+MODBUSID inquire/set MODBUS ID........................................................................................................... 25

5.5.7 AT+MODE inquire/set operating mode................................................................................................................ 25

5.5.8 AT+MID inquire device name................................................................................................................................ 25

5.5.9 AT+RESTORE restore factory default setting....................................................................................................... 26

5.5.10 AT+REBT reset device.......................................................................................................................................... 26

5.5.11 AT+UARTPKT inquire/set UART sub=packing info........................................................................................... 26

5.5.12 AT+UART inquire/set UART parameter...............................................................................................................26

5.5.13 AT+VER inquire module version info..................................................................................................................27

6 FAQ..................................................................................................................................................27

6.1 Module is easy to damage.............................................................................................................................................27

6.2 Unable to successfully set the command..................................................................................................................... 27

6.3 Unable to use after parameter is changed.................................................................................................................. 27

REVISION HISTORY...................................................................................................................... 28

ABOUT US......................................................................................................................................... 28

Chengdu Ebyte Electronic Technology Co.,LTD E810-DTU(CAN-RS485) User Manual

1. Overview

1.1 Brief Introduction

E810-DTU (CAN-RS485) is a small intelligent protocol converter developed by

Chengdu Ebyte Electronic Technology Co., Ltd. It is with 8V ~ 28V of power supply,

integrating 1 channel CAN-BUS interface and 1 channel RS485 interface to realize

bidirectional conversion between different protocol data from RS485 and CAN. It supports

serial command configuration device parameters and working mode, and there are four data

conversion modes available: transparent conversion, transparent band information conversion,

protocol conversion, and Modbus RTU conversion. At the same time, E810-DTU (CAN-

RS485) intelligent protocol converter has the characteristics of small size and convenient

installation. It has high cost performance in CAN-BUS product development and data

analysis applications. It is reliable assistant for engineering application, project debugging and product development.

1.2 Feature

Bidirectional conversion of data between RS485 and CAN is available.

Transparent conversion, transparent band information conversion and protocol conversion are available.

Modbus RTU protocol conversion is available.

Support two CAN identifier transmission methods, which can be specified by fixed configuration or serial frame data.

Parameter setting via RS485 is available.

Parameter setting via RS485 is between 1200~115200.

Parameter setting via software is available.

Factory setting reset via software and hardware is available.

With power indicator, status indicator, etc.

1.3 Application

Industrial control and other CAN-BUS networks

Automobile and railway equipment networking

Security and fire protection network

Underground remote communication

Public address system

Parking equipment control

Smart home, smart building

Chengdu Ebyte Electronic Technology Co.,LTD E810-DTU(CAN-RS485) User Manual

2. Technical Parameters and Specification

2.1 Basic parameter

Main parameter

Value

Power supply

8V ～28V ，12V or 24V is recommended （Voltage over 28V will cause

permanent damage）

Operating current

38.2762mA@12V（RS485）

Operating temperature

-40℃～85℃

Interface

RS485：1*5*3.81，screwing；CAN：1*4*3.81,screwing

Communication level

3.3V，or 5V，level switch is required

Operating humidity

10%～90%，relative humidity, no condensation

2.2 Factory default parameter

RS485

Serial baud rate

115200 bps

Parity

None

Data bit

Stop bit

Flow control

Off

CAN

CAN baud rate

100K bps

CAN ID

0x00000000

Flow control

Off

Default operating mode

Transparent transmission mode

Receive all kinds of data

Default device address

Modbus device address

Default device address is 1

Frame sub-packing parameter

Time

10ms

Byte

1000byte

Chengdu Ebyte Electronic Technology Co.,LTD E810-DTU(CAN-RS485) User Manual

3 Hardware design introduction

3.1 Design introduction

Chengdu Ebyte Electronic Technology Co.,LTD E810-DTU(CAN-RS485) User Manual

NO.

Item

Application

VCC

Power supply, default : 8-28V, 12V or 24V is recommended

(standard 5V can be customized )

GND

Ground

GNDA

RS485 common port，connecting to GND of other RS485 device

485_A

RS485, Data A

485_B

RS485, Data B

PWR

Power indicator

Serial port TX indicator

Serial port RX indicator

Restore factory settings indicator, press DTU for 5-10S to restore factory

settings

STE

Status indicator

GNDA

Signal reference ground

GNDA

Signal reference ground

CAN-H can H

CAN communication interface

CAN-L can L

CAN communication interface

Chengdu Ebyte Electronic Technology Co.,LTD E810-DTU(CAN-RS485) User Manual

3.2 Dimension

Chengdu Ebyte Electronic Technology Co.,LTD E810-DTU(CAN-RS485) User Manual

3.3 Connection method

3.3.1 RS485 connection method

Chengdu Ebyte Electronic Technology Co.,LTD E810-DTU(CAN-RS485) User Manual

3.3.2 CAN connection method

4 Mode introduction

4.1 Operating mode

There are two modes for E810-DTU(CAN-RS485)，normal and parameter setting mode.

Mode

Function

Normal mode

The general mode of the device is normal mode, and it works

normally when it is powered on.

Setting mode

The device can be configured in the mode. For details on how to

enter the configuration mode, see Chapter 5.

4.2 Data conversion mode

There are four data conversion modes for E810-DTU(CAN-RS485) ：Transparent conversion, transparent band information

conversion, protocol conversion and MODBUS conversion. Bidirectional conversion between CAN and RS485 is available.

Data conversion mode

Conversion direction

Transparent conversion

Bidirectional conversion between CAN

and RS485

Transparent band information

conversion

Bidirectional conversion between CAN

and RS485

Protocol conversion

Bidirectional conversion between CAN

and RS485

MODBUS conversion

Bidirectional conversion between CAN

and RS485

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