Ebyte NB144ES User manual

NB144ES

Four Serial Ports

Serial Server

User manual

Chengdu Ebyte Electronic Technology Co., Ltd. NB144ES User Manual

Contents

Disclaimer and Copyright Notice ...................................................................................................................................3

1 Introduction ................................................................................................................................................................. 4

1.1Features ..................................................................................................................................................................4

2 Quick Start ...................................................................................................................................................................5

2.1 Hardware List ....................................................................................................................................................... 5

2.2 Software ................................................................................................................................................................6

2.3 Device default parameter test steps ......................................................................................................................6

2.3.1 Connecting Hardware ................................................................................................................................6

2.3.2 Device parameter configuration ................................................................................................................7

2.3.3 Turn off the computer firewall .................................................................................................................. 8

2.3.4 Open the "Serial Debug Assistant" ........................................................................................................... 8

2.3.5 Open network assistant ..............................................................................................................................9

2.3.6 Send and receive data test ......................................................................................................................... 9

3 Parameters ................................................................................................................................................................. 10

3.1 Technical parameters .......................................................................................................................................... 10

3.2 Interface Description .......................................................................................................................................... 11

3.4 Dimensions ......................................................................................................................................................... 15

4 Functions ................................................................................................................................................................... 16

4.1 Correspondence between channel and serial port..............................................................................................16

4.2 Local network parameters .................................................................................................................................. 16

4.2.1 Local IP ................................................................................................................................................... 16

4.2.2 DNS ( domain name resolution ) ............................................................................................................ 16

4.2.3 Network disconnection reconnection cycle ............................................................................................ 17

4.2.4 Timeout restart (no data restart) .............................................................................................................. 17

4.3 Hardware factory reset ....................................................................................................................................... 17

4.4 Device working mode ........................................................................................................................................ 17

4.4.1 TCP Server .............................................................................................................................................. 17

4.4.2 TCP Client ............................................................................................................................................... 18

4.4.3 UDP Server ..............................................................................................................................................18

4.4.4 UDP Client .............................................................................................................................................. 18

4.4.5 HTTP client _ .......................................................................................................................................... 19

4.4.6 MQTT client ............................................................................................................................................22

4.5 Channel port ....................................................................................................................................................... 24

5 Advanced Features .....................................................................................................................................................25

5.1 Heartbeat package and registration package ......................................................................................................25

5.1.1 heartbeat packet .......................................................................................................................................25

5.1.2 registration package .................................................................................................................................25

5.2 short connection ..................................................................................................................................................26

5.3 Serial buffer cleaning ......................................................................................................................................... 26

5.4 Modbus gateway .................................................................................................................................................27

5.4.1 Simple Protocol Conversion ................................................................................................................... 27

5.4.2 multi-host mode .......................................................................................................................................29

Chengdu Ebyte Electronic Technology Co., Ltd. NB144ES User Manual

5.4.3 storage gateway ....................................................................................................................................... 30

5.4.4 Configurable Gateway .............................................................................................................................31

5.4.5 automatic upload ..................................................................................................................................... 32

5.5 Firmware upgrade ...............................................................................................................................................33

5.5.1 UDP upgrade ........................................................................................................................................... 34

5.5.2 Serial upgrade ..........................................................................................................................................35

6 Revision history .........................................................................................................................................................37

Contact us ................................................................................................................................................................. 37

Chengdu Ebyte Electronic Technology Co., Ltd. NB144ES User Manual

Disclaimer and Copyright Notice

Information in this document, including URL addresses for reference, is subject to change without

notice. Documentation is provided "as is" without warranty of any kind, including any warranties of

merchantability, fitness for a particular purpose, or non-infringement, and any warranties referred to

elsewhere in any proposal, specification or sample. No responsibility is assumed in this document,

including any liability for infringement of any patent rights arising out of the use of the information

in this document. This document does not hereby grant, by estoppel or otherwise, any license,

express or implied, to use any intellectual property rights.

The test data obtained in this article are all obtained by the Ebyte laboratory test, and the actual

results may be slightly different. All trade names, trademarks and registered trademarks mentioned

herein are the property of their respective owners and are hereby acknowledged.

Ebyte Electronic Technology Co., Ltd.

Note :

Due to product version upgrade or other reasons, the contents of this manual may be changed. 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. does its best to provide accurate

information in this manual. However, Chengdu Ebyte Electronic Technology Co., Ltd. does not ensure that the

contents of the manual are completely error-free. All statements in this manual , information and advice do not

create any express or implied warranties.

Chengdu Ebyte Electronic Technology Co., Ltd. NB144ES User Manual

1 Introduction

NB144ES is a 4-way serial port server that supports POE

power supply. It integrates the TCP/IP protocol stack inside,

which can realize the two-way transparent transmission of

data from the 4-way serial port to the Ethernet port. The

device has the function of ModBus gateway, supports

Modbus TCP to RTU, and supports automatic polling. The

product adopts industrial-grade standard design to ensure the stability of the equipment in harsh working

environments, and the rich indicator lights are used to feedback the different working states of the equipment.

1.1Features

Stable and reliable industrial design, high-level port protection;

Abundant LED status indicators to quickly locate the working status of the device;

Support POE power receiving;

Support Phoenix terminal or DC head power supply, DC 8-28V wide voltage input, support reverse polarity protection;

Support terminal interface ( RS485 /RS422 ) and standard DB9 interface ( RS232 );

The baud rate supports 2400 ~ 115200 bps, and supports multiple verification methods;

Support sending of various registration packets and heartbeat packets, such as connection sending M AC , connection sending customization,

etc.;

Support stable and reliable host computer and AT command configuration, independent configuration of four channels does not affect each other;

Support DNS domain name resolution, domain name resolution server can be configured ;

Support DHCP to dynamically obtain IP, subnet mask , default gateway, DNS server address;

Support multiple working modes TCP client, TCP server, UDP client, UDP server, MQTT client, HTTP client ;

4 -way server mode can be turned on at the same time , supporting 12 clients to dynamically allocate and access, and a single server supports 13

clients to access,

DP server mode that supports memory mode , records the UDP address of the last communication, and uses it as the destination address of the

next communication;

Support a variety of Modbus gateways, which can realize the active reporting of RTU devices, support the mutual conversion of Modbus TCP

and Modbus RTU protocols, and can be configured as a storage mode to automatically collect device data, or a multi-host mode of one question

and one answer;

Support MQTT gateway function, fast access to Aliyun and standard MQTT3.1.1 servers (OneNET, Baidu Cloud, Huawei Cloud, etc.);

Support Modb us data to actively report to TCP transparent transmission server, MQTT server and other servers;

Support HTTP client mode, use HTTP /1.1 protocol, can be configured as two request methods : G ET and P OST

can use TCP/IP direct communication or connect communication through " virtual serial port " ;

Abundant independent LED status indicators, supporting links, network cables, data sending and receiving, etc .;

Support the host computer to perform firmware upgrade or firmware switch through UDP or serial port ;

Chengdu Ebyte Electronic Technology Co., Ltd. NB144ES User Manual

2 Quick Start

2.1 Hardware List

1.laptop with RJ45 network port.

2.NB1 44 serial port server.

3.One DC12V 1A power adapter ( not necessary if there is a POE switch ).

4.a network cable.

5.One USB to RS485 serial cable.

6.The specific preparation of hardware equipment is shown in the following:

Ethernet cable

NB144ES

DC 12V1A

USB to RS45

wires

[Note] This chapter only uses one RS485 interface for demonstration, and the other interfaces can use the

corresponding USB converter.

Chengdu Ebyte Electronic Technology Co., Ltd. NB144ES User Manual

2.2 Software

NB144ES configuration tool download

Serial Debug Assistant- XCOM download

Network debugging assistant TCP/IP, download

TCP/IP tool

Serial Debug Assistant-XCOM

NB144ES configuration tool

【Note】User can use other test tools to do test, and the operation steps are similar.

2.3 Device default parameter test steps

Different channels use the same IP but different local ports. For example, the factory-configured channel 1

corresponds to port 8001 and channel 4 corresponds to port 8004. For details, see the chapter " Channel and Serial

Port Correspondence ".

2.3.1 Connecting Hardware

1. Connect the serial port server network port and the computer network port with a network cable ;

2. Use a USB to RS485 serial cable to connect the USB port of the computer to any RS 4 85 port of the serial

server ;

3. Use the power adapter ( DC 8 -28V ) to connect the power supply to the device, and observe whether the

indicator light is normal after power on , and refer to " indicator light description ";

4. After confirming that there is no problem with the status, proceed to the next step of configuration;

Chengdu Ebyte Electronic Technology Co., Ltd. NB144ES User Manual

2.3.2 Device parameter configuration

In order to enable users to quickly have a simple understanding of the serial server, we use the default parameters

of the serial server to conduct data transparent transmission tests. The default parameters of N B1 44 serial port

server equipment are shown in the table below.

project

default parameters

IP address

192.168.3.7

subnet mask

255.255.255.0

gateway

192.168.3.1

Channel 1 working mode

TCP_SERVER

Local port for channel 1

8 001

Serial baud rate

1 15200

Serial parameters

NONE/8/1/NONE

Make sure that the computer IP and serial server IP are in the same network segment and cannot conflict. The

inspection method is shown in the figure below.

Chengdu Ebyte Electronic Technology Co., Ltd. NB144ES User Manual

2.3.3 Turn off the computer firewall

If the communication is unsuccessful, the user can try to turn off the firewall on the computer and try again.

2.3.4 Open the "Serial Debug Assistant"

Select the correct serial port number, configure the correct serial port parameters ( 115200-8N1 ), and open the

serial port, as shown in the figure below:

Chengdu Ebyte Electronic Technology Co., Ltd. NB144ES User Manual

2.3.5 Open network assistant

Select the "TCP client " mode, configure the remote IP as "1 92.168.3.7 ", and configure the remote port as "8 001 ",

as shown in the figure below:

2.3.6 Send and receive data test

Click the [Send] button on the " Network Debug Assistant " and " Serial Port Debug Assistant " respectively to

realize the transparent transmission of network and serial port data, as shown in the figure below.

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