Ebyte ME31-AAAX2240 User manual

Chengdu Ebyte Electronic Technology Co.,Ltd. ME31-AAAX2240_UserManul_EN

ME31-AAAX2240

I/O networking module

Chengdu Ebyte Electronic Technology Co.,Ltd. ME31-AAAX2240_UserManul_EN

Contents

Chapter 1 Product overview ...........................................................................................................................................2

1.1 Introduction ...................................................................................................................................................... 2

1.2 Features ............................................................................................................................................................ 2

1.3 Application typology diagram ..........................................................................................................................3

Chapter 2 Quick start ......................................................................................................................................................4

2.1 Devices required ...............................................................................................................................................4

2.2 Device connection ............................................................................................................................................ 5

2.2.1 RS485 connection ................................................................................................................................. 5

2.2.2 AI analog input connection ................................................................................................................... 5

2.2.3 DI switch input connection ................................................................................................................... 6

2.2.4 Relay output connection ........................................................................................................................6

2.2.5 Simple use ............................................................................................................................................. 6

2.3 Parameter configuration ...................................................................................................................................7

2.4 Control test ....................................................................................................................................................... 8

2.4.1 Modbus TCP control ............................................................................................................................. 8

2.4.2 Modbus RTU control ............................................................................................................................ 9

Chapter 3 Technical indicator ...................................................................................................................................... 10

3.1 Specification and parameter ...........................................................................................................................10

3.2 Device default parameter ............................................................................................................................... 11

3.3 Dimensions .....................................................................................................................................................12

3.4 Ports and indicators ........................................................................................................................................ 13

Chapter 4 Product function introduction ......................................................................................................................15

4.1 DO output .......................................................................................................................................................15

4.1.1 Level output ........................................................................................................................................ 15

4.1.2 Pulse output .........................................................................................................................................15

4.1.3 Follow mode ........................................................................................................................................15

4.1.4 Power on state ..................................................................................................................................... 15

4.2 DI input ...........................................................................................................................................................15

4.2.1 Switch input DI acquisition ................................................................................................................ 15

4.2.2 Input filtering ...................................................................................................................................... 16

4.2.3 Input count.......................................................................................................................................... 16

4.3 Active upload ..................................................................................................................................................16

4.4 AI input ...........................................................................................................................................................16

4.4.1 Analog range ....................................................................................................................................... 16

4.4.2 AI original value and engineering value of analog input ................................................................... 17

4.4.3 Input filter parameters .........................................................................................................................17

4.4.4 Input calibration .................................................................................................................................. 18

4.5 Modbus gateway ............................................................................................................................................ 18

4.6 Active upload ..................................................................................................................................................18

4.7 Custom Module Information ..........................................................................................................................18

4.7.1 Modbus address ...................................................................................................................................18

4.7.2 Module name .......................................................................................................................................18

Chengdu Ebyte Electronic Technology Co.,Ltd. ME31-AAAX2240_UserManul_EN

4.7.3 Network parameter ..............................................................................................................................18

4.7.4 UART parameter ................................................................................................................................. 19

4.8 LCD display and parameter configuration .....................................................................................................20

4.8.1 Information display interface ..............................................................................................................20

4.8.2 Device parameter display interface .....................................................................................................20

4.8.3 Parameter configuration ......................................................................................................................20

4.9 Modbus TCP protocol data frame description ............................................................................................... 21

4.10 Modbus RTU protocol data frame description ............................................................................................ 22

4.11 MODBUS parameter configuration ............................................................................................................. 22

4.11.1 DO register list .................................................................................................................................. 22

4.11.2 DI register list ....................................................................................................................................23

4.11.3 AI register list .................................................................................................................................... 23

4.11.4 Module related register ..................................................................................................................... 24

4.11.5 Network related register ....................................................................................................................24

4.11.6 Modbus command operation .............................................................................................................25

Chapter 5 Host computer ............................................................................................................................................. 28

5.1 Acquisition and control .................................................................................................................................. 28

5.2 Parameter setting ............................................................................................................................................29

Revision history ............................................................................................................................................................32

About us ........................................................................................................................................................................32

Chengdu Ebyte Electronic Technology Co.,Ltd. ME31-AAAX2240_UserManul_EN

Chapter 1 Product overview

1.1 Introduction

ME31-AAAX2240 is equipped with 4 Type A relay outputs and 2

analog (0-20mA/4-20mA) inputs, 2 dry contact input detection, supports

Modbus TCP protocol or Modbus RTU protocol for acquisition and control,

and the equipment is also A network I/O networking module that can be

used as a simple Modbus gateway (automatically send commands with

non-local Modbus addresses through the serial port/network port).

1.2 Features

Good for standard Modbus RTU protocol and MODBUS TCP protocol;

Work with various configuration software/PLC/touch screen；

RS485 acquisition control I/O；

RJ45 acquisition control I/O，support 4 channel master access；

2 channel analog input（0-20mA/4-20mA）；

2-channel switch input DI (dry node) ；

4-channel switch output DO (Type A relay) ；

Switch output (DO) supports level mode, pulse mode, follow mode ；

Support custom Modbus address settings；

Support 8 common baud rate configurations ；

DHCP and static IP；

DNS function, domain name analysis；

Support Modbus gateway；

Chengdu Ebyte Electronic Technology Co.,Ltd. ME31-AAAX2240_UserManul_EN

1.3 Application typology diagram

Modbus TCP application request topology：

Modbus RTU application request topology：

Chengdu Ebyte Electronic Technology Co.,Ltd. ME31-AAAX2240_UserManul_EN

Chapter 2 Quick start

Note: The test need to carry out with factory parameter.

2.1 Devices required

ME31-AAAX2240

12V SMPS

USB to RS485

Computer

RJ45 Cable

More cables

Chengdu Ebyte Electronic Technology Co.,Ltd. ME31-AAAX2240_UserManul_EN

2.2 Device connection

2.2.1 RS485 connection

Note: When the 485 bus high frequency signal is transmitted, the signal wavelength is shorter than the transmission

line, and the signal will form a reflected wave at the end of the transmission line, which will interfere with the

original signal. Therefore, a terminal resistance must be added at the end of the transmission line to prevent the

signal from being reflected after reaching the end of the transmission line. The terminal resistance should be the

same as the impedance of the communication cable, with a typical value of 120 ohms. Its function is to match the

bus impedance and improve the anti-interference and reliability of data communication.

2.2.2 AI analog input connection

Chengdu Ebyte Electronic Technology Co.,Ltd. ME31-AAAX2240_UserManul_EN

2.2.3 DI switch input connection

2.2.4 Relay output connection

2.2.5 Simple use

Chengdu Ebyte Electronic Technology Co.,Ltd. ME31-AAAX2240_UserManul_EN

Wiring: The computer is connected to the RS485 interface of ME31-AXCX4040 through USB to RS485, A is connected to A, B is connected to B.

Networking: Insert the network cable into the RJ45 port and connect to the PC. Power supply: Use DC-12V switching power supply (DC 8~28V) to

supply power to ME31-AAAX2240.

2.3 Parameter configuration

Step 1: Modify the IP address of the computer to be consistent with the device. Here it is modified to 192.168.3.100

to ensure the same network segment as the device and that the IP is different. Please turn off the firewall and try

again if the step failed;

Step 2: Open the network assistant, select the TCP client, enter the remote host IP192.168.3.7 (default parameters),

enter the port number 502 (default parameters), and select HEX to send.

Chengdu Ebyte Electronic Technology Co.,Ltd. ME31-AAAX2240_UserManul_EN

2.4 Control test

2.4.1 Modbus TCP control

Use network assistant to control ME31-AAAX2240, first channel DO output.

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