Ebyte NB1A1 User manual

Copyright ©2012–2023，成都亿佰特电子科技有限公司
NB1A1
16 Serial Server User Manual

Chengdu Ebyte Electronic Technology Co., Ltd. NB1A1User Manual
Copyright ©2012–2023，Chengdu Ebyte Electronic Technology Co., Ltd.
Catalog
Chapter1 Introduction ............................................................................................................................ 1
1.1 Features ........................................................................................................................................1
Chapter 2 Quick Start ............................................................................................................................ 2
2.1 Hardware preparation .................................................................................................................. 2
2.2 Sotware preparation ..................................................................................................................... 2
2.3 Device Test Procedure ................................................................................................................. 3
2.3.1 Connect hardware ............................................................................................................. 3
2.3.2 Device parameters settings ............................................................................................... 4
2.3.3 Open the serial debugging assistant ..................................................................................5
2.3.4 Opening the Network Assistant ........................................................................................ 6
2.3.5 Sending and receiving data test ........................................................................................ 7
Chapter 3 Product Overview
3.1 Technical parameters ................................................................................................................... 7
3.2 Interface description .................................................................................................................... 9
3.3 Indicator Description ................................................................................................................. 11
3.4 Size .............................................................................................................................................15
Chapter 4 Basic function ......................................................................................................................16
4.1 Mapping between Channels and serial ports ............................................................................. 16
4.2 Local network parameter ........................................................................................................... 16
4.2.1 Local IP address .............................................................................................................. 16
4.2.2 DNS(Domain name resolution) ...................................................................................... 17
4.2.3 Disconnection and reconnection period ..........................................................................17
4.2.4 Timeout restart (restart without data) ..............................................................................17
4.3 Hardware factory recovery ........................................................................................................ 17
4.4 Device Working Mode ............................................................................................................... 18
4.4.1 TCP Server ...................................................................................................................... 18
4.4.2 TCP Client .......................................................................................................................18
4.4.3 UDP Server ..................................................................................................................... 18
4.4.4 UDP Client ......................................................................................................................19
4.4.5 HTTP client ..................................................................................................................19
4.4.6 MQTT Client .................................................................................................................. 20
4.4.7 Port Mapping .................................................................................................................. 22
4.5 Channel terminal ........................................................................................................................22
Chapter 5 Advanced functions .............................................................................................................23
5.1 Heartbeat packet and registration packet ................................................................................... 23
5.1.1 Heartbeat packet ............................................................................................................. 23
5.1.2 registration packet ...........................................................................................................23
5.2 Short connection ........................................................................................................................ 24
5.3 Serial cache clearing .................................................................................................................. 24
5.4 Modbus Gateway ....................................................................................................................... 25
5.4.1 Protocal conversion .........................................................................................................25
5.4.2 Simple Protocol Conversion ........................................................................................... 25
5.4.3 Multi-Host Mode ............................................................................................................ 27

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5.4.4 Storage Gateway ............................................................................................................. 28
5.4.5 Configurable gateway ..................................................................................................... 29
5.4.6 Upload Automatically ..................................................................................................... 30
5.5 Firmware upgrade ...................................................................................................................... 31
Revise History ......................................................................................................................................33
About Us .............................................................................................................................................. 33

Chengdu Ebyte Electronic Technology Co., Ltd. NB1A1User Manual
Copyright ©2012–2023，Chengdu Ebyte Electronic Technology Co., Ltd.
1
Chapter1 Introduction
NB1A1 is a series of serial port server products independently developed by EBAite, which can
realize bi-directional transparent transmission of data from 16 serial ports to Ethernet ports. Support
Modbus protocol conversion, multi-host gateway, storage gateway and other data conversion
functions. At the same time, it also supports the upload of on-site data to the cloud server to achieve
cloud monitoring. The equipment adopts industrial design standards to ensure stability in harsh
working environments.
It supports the fast configuration of host computer and AT command, which can realize the fast
debugging and installation of equipment.
Widely used in computer room monitoring, environmental monitoring, intelligent traffic, road
gate control, intelligent express cabinets and other industries.
1.1 Features
Industrial design is stable and reliable, port isolation protection design;
16 independent RS485 ports are supported.
Support a variety of Modbus gateway modes, multi-host, storage, configurable gateway;
Supports active ModBus data reporting.
Supports two network ports and switch cascading.
Supports POE power supply；
Support access standard MQTT, OneNET, Baidu Cloud, Huawei Cloud, Alibaba Cloud;
Rich LED status indicator, real-time indication of equipment working status;
Support host computer, AT command configuration and other configuration methods;
Support terminal or DC head power supply, 8-28V DC wide voltage input, support reverse
protection;
The baud rate ranges from 1200 to 460800bps；
Supports serial heartbeat packets, network heartbeat packets, and registration packets.
Each way supports working modes: TCP client, TCP server, UDP client, UDP server, MQTT
client, HTTP client;
16 servers can be enabled at the same time, and each server supports eight clients.
supports HTTP client mode;
Support remote upgrade, easy customization and optimization;
Supports virtual serial port software.

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Chapter 2 Quick Start
2.1 Hardware preparation
A laptop with RJ45 network port and USB interface;
NB1A1 serial server one;
DC12V 1A power adapter;
A network cable;
One USB to RS485 converter;
The following figure shows the hardware devices to be prepared：
Computer
Net cable
NB1A1
DC 12V1A
USB to RS45
Conductor cables
Note: The Quick Start shows only one RS485 port.
2.2 Sotware preparation
Serial Debugging Assistant (XCOM), Network Debugging Assistant (NetAssist), EBAite network
configuration tool (configure the host computer), official website address： www.ebyte.com， Product
details provides a download interface.

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Network Assistant
XCOM
Ebyte configuration software
[Note] The version of the host computer shown in the manual may be different from that provided by
the official website. The host computer provided by the official website shall prevail.
2.3 Device Test Procedure
This quick Start guide uses RS485 channel 1 as an example to describe how to configure other
channels.
2.3.1 Connect hardware
1. Connect serial port server network port and computer network port with network cable;
2, use the USB to RS485 converter to connect the USB port of the computer and the RS485 interface
of the serial port server (A to A, B to B); (If the serial port cannot be identified, install the
corresponding driver.)
3. Use a power adapter (DC 8-28V) to power on the serial port server device. After powering on the
device, observe whether the indicator is normal.
4. Confirm that the status is correct and proceed to the next configuration；
Note: The power-on and power-on process is expected to take about 50 seconds. Wait for the NET
indicator to blink quickly, indicating that the device is powered on.

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2.3.2 Device parameters settings
We tested transparent data transfer using the default parameters of the serial server. Open the
configuration software, click Search device, select the device, and check the following parameters：
Change the computer IP address as follows: 192.167.3.100.
Ensure that the PC IP address and serial port server IP address are in the same network segment,
and the IP address must be different. The method is shown in the following figure.

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Note: If the communication is not successful, the user can try to close the firewall of the
computer and try again, as shown in the following figure：
2.3.3 Open the serial debugging assistant
Start the XCOM V2.6 software, select the correct serial port number, set the current serial port
parameters of the device (the default value is 115200-8N1), and open the serial port, as shown in the
following figure：

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2.3.4 Opening the Network Assistant
Open the Network assistant software, select the "TCP Client" mode, set the remote IP address to
"192.168.3.7" and the remote port to "8001", and click the Connect button, as shown in the following
figure：

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2.3.5 Sending and receiving data test
Click the "Send" button on "Network Debugging Assistant" and "Serial Debugging Assistant"
respectively to realize the transparent transmission of network and serial data, as shown in the figure
below.
Chapter 3 Product Overview
3.1 Technical parameters
Items
Innterface
Description
power
terminal
Dc 8 ~ 28 V, the two interfaces cannot supply
power at the same time;
Wire terminal: 2pin phoenix terminal;
DC seat: straight insert round hole, outer
diameter 5.5mm, inner diameter 2.0mm；
DC block
Net interface
RJ45
100/10M adaptive network port
Support switch function
Ethernet 1 supports POE power supply
Serial port
Channel 1 to
channel 16
RS485, 3.81mm Phoenix terminal, support
isolation
Working mode
TCP Server、TCP Client、UDP Server、UDP Client、HTTP Client、
MQTT Client（Default TCP Server）
Internet
protocal
IP、TCP/UDP、IPv4、ICMP、APR、DHCP、DNS、HTTP、
MQTT
IP acquisition
DHCP, Static IP (default static IP)

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mode
Domain name
resolution
The value can be a maximum of 128 bytes
Configuration
way
Configure tools, AT commands, and network ats
IP address
Customizable (default, 192.168.3.7)
Local port
Customizable (default, channel 1 ~ Channel 16:8001-8016)
Subnet mask
Customizable (default, 255.255.255.0)
Gateway
Customizable (default, 192.168.3.1)
Serial port
packaging
mechanism
512 Byte
Serial baud rate
1200～460800 bps（default 115200）
Data bit
8
Stop bit
1、2（default 1）
Check bit
None、Odd、Even（default None）
Installation
mode
Positioning hole installation
Product size
226mm * 130mm * 28.5mm （L*W*H）
Product weight
720g ±5g
Operating
temperature
and humidity
-20 ~ +65℃, 5% ~ 95%RH (no condensation)
Storage
temperature
and humidity
-30 ~ +75℃, 5% ~ 95%RH (no condensation)

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3.2 Interface description
No.
Name
Function
Description
1
-
DC 8-28 V negative
terminal
Dc 8-28 V, 2*5.08mm Phoenix terminal
input;Do not supply power at the same
time as the socket;
2
+
DC8-28 V Positival
terminal
Dc 8-28 V, 2*5.08mm Phoenix terminal
input;Do not supply power at the same
time as the socket;
3
DC-IN
Dc power input
DC 8-28 V；
Straight insert round hole, outer
diameter 5.5mm, inner
diameter2.0mm；
Do not supply power to terminals at the
same time；
4
Ethernet 1
Enthernet Interface
Standard RJ45 Ethernet interface,
10/100M adaptive, switch function,
cascading

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5
Ethernet 2
Enthernet Interface
Standard RJ45 Ethernet port, 10/100M
adaptive, POE power supply
6
Reload
Factory reset button
After long press 5-10Ss, all leds except
NET will be on for 1s, and the device
will be restored to factory
7
USB
Factory burning interface
Micro USB
8
LED
LED indicator light
See indicator description for details
9
RS485-16-A
Channel16-RS485interfaceA
3.81mmPhoenix terminal
10
RS485-16-B
Channel16-RS485interfaceB
3.81mmPhoenix terminal
11
RS485-16-G
Channel16-RS485interfaceG
3.81mmPhoenix terminal
12
RS485-15-A
Channel15-RS485interfaceA
3.81mmPhoenix terminal
13
RS485-15-B
Channel15-RS485interfaceB
3.81mmPhoenix terminal
14
RS485-15-G
Channel15-RS485interfaceG
3.81mmPhoenix terminal
15
RS485-14-A
Channel14-RS485interfaceA
3.81mmPhoenix terminal
16
RS485-14-B
Channel14-RS485interfaceB
3.81mmPhoenix terminal
17
RS485-14-G
Channel14-RS485interfaceG
3.81mmPhoenix terminal
18
RS485-13-A
Channel13-RS485interfaceA
3.81mmPhoenix terminal
19
RS485-13-B
Channel13-RS485interfaceB
3.81mmPhoenix terminal
20
RS485-13-G
Channel13-RS485interfaceG
3.81mmPhoenix terminal
21
RS485-12-A
Channel12-RS485interfaceA
3.81mmPhoenix terminal
22
RS485-12-B
Channel12-RS485interfaceB
3.81mmPhoenix terminal
23
RS485-12-G
Channel12-RS485interfaceG
3.81mmPhoenix terminal
24
RS485-11-A
Channel11-RS485interfaceA
3.81mmPhoenix terminal
25
RS485-11-B
Channel11-RS485interfaceB
3.81mmPhoenix terminal
26
RS485-11-G
Channel11-RS485interfaceG
3.81mmPhoenix terminal
27
RS485-10-A
Channel10-RS485interfaceA
3.81mmPhoenix terminal
28
RS485-10-B
Channel10-RS485interfaceB
3.81mmPhoenix terminal
29
RS485-10-G
Channel10-RS485interfaceG
3.81mmPhoenix terminal
30
RS485-9-A
Channel9-RS485interfaceA
3.81mmPhoenix terminal
31
RS485-9-B
Channel9-RS485interfaceB
3.81mmPhoenix terminal
32
RS485-9-G
Channel9-RS485interfaceG
3.81mmPhoenix terminal
33
RS485-8-A
Channel8-RS485interfaceA
3.81mmPhoenix terminal
34
RS485-8-B
Channel8-RS485interfaceB
3.81mmPhoenix terminal
35
RS485-8-G
Channel8-RS485interfaceG
3.81mmPhoenix terminal
36
RS485-7-A
Channel7-RS485interfaceA
3.81mmPhoenix terminal
37
RS485-7-B
Channel7-RS485interfaceB
3.81mmPhoenix terminal
38
RS485-7-G
Channel7-RS485interfaceG
3.81mmPhoenix terminal
39
RS485-6-A
Channel6-RS485interfaceA
3.81mmPhoenix terminal
40
RS485-6-B
Channel6-RS485interfaceB
3.81mmPhoenix terminal
41
RS485-6-G
Channel6-RS485interfaceG
3.81mmPhoenix terminal
42
RS485-5-A
Channel5-RS485interfaceA
3.81mmPhoenix terminal
43
RS485-5-B
Channel5-RS485interfaceB
3.81mmPhoenix terminal
44
RS485-5-G
Channel5-RS485interfaceG
3.81mmPhoenix terminal

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45
RS485-4-A
Channel4-RS485interfaceA
3.81mmPhoenix terminal
46
RS485-4-B
Channel4-RS485interfaceB
3.81mmPhoenix terminal
47
RS485-4-G
Channel4-RS485interfaceG
3.81mmPhoenix terminal
48
RS485-3-A
Channel3-RS485interfaceA
3.81mmPhoenix terminal
49
RS485-3-B
Channel3-RS485interfaceB
3.81mmPhoenix terminal
50
RS485-2-G
Channel3-RS485interfaceG
3.81mmPhoenix terminal
51
RS485-2-A
Channel2-RS485interfaceA
3.81mmPhoenix terminal
52
RS485-2-B
Channel2-RS485interfaceB
3.81mmPhoenix terminal
53
RS485-2-G
Channel2-RS485interfaceG
3.81mmPhoenix terminal
54
RS485-1-A
Channel1-RS485interfaceA
3.81mmPhoenix terminal
55
RS485-1-B
Channel1-RS485interfaceB
3.81mmPhoenix terminal
56
RS485-1-G
Channel1-RS485interfaceG
3.81mmPhoenix terminal
3.3 Indicator Description
Lable
Function
Description
POWER
Power indicator
light
DC 8-28V power supply lights up after input
NET
Running light
The indicator blinks rapidly: it is working normally.；
Indicator Blinking slowly: The device is not
connected. Network cable: Other status: The device
is not working properly；
PORT1
Channel1 Status
indicator
If the indicator is off, the link is downBlinking: The
indicator blinks when the network or serial port is
sending or receiving data. Indicator light is on:
(1) The link is successfully connected
(2) UDP server mode and after receiving the client

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message(3) UDP client mode
PORT2
Channel2 Status
indicator
If the indicator is off, the link is down.Blinking: The
indicator blinks when the network or serial port is
sending or receiving data. Indicator light is on:
(1) The link is successfully connected.
(2) UDP server mode and after receiving the client
message;
(3) UDP client mode.
PORT3
Channel3 Status
indicator
If the indicator is off, the link is down
Blinking: The indicator blinks when the network or
serial port is sending or receiving data.
Indicator light is on:
(1) The link is successfully connected
(2) UDP server mode and after receiving the client
message
(3) UDP client mode
PORT4
Channel4 Status
indicator
If the indicator is off, the link is down
Blinking: The indicator blinks when the network or
serial port is sending or receiving data.
Indicator light is on:
(1) The link is successfully connected
(2) UDP server mode and after receiving the client
message
(3) UDP client mode
PORT5
Channel5 Status
indicator
If the indicator is off, the link is down
Blinking: The indicator blinks when the network or
serial port is sending or receiving data.
Indicator light is on:
(1) The link is successfully connected
(2) UDP server mode and after receiving the client
message
(3) UDP client mode
PORT6
Channel6 Status
indicator
If the indicator is off, the link is down
Blinking: The indicator blinks when the network or
serial port is sending or receiving data.
Indicator light is on:
(1) The link is successfully connected
(2) UDP server mode and after receiving the client
message
(3) UDP client mode
PORT7
Channel7 Status
indicator
If the indicator is off, the link is down
Blinking: The indicator blinks when the network or
serial port is sending or receiving data.
Indicator light is on:

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(1) The link is successfully connected
(2) UDP server mode and after receiving the client
message
(3) UDP client mode
PORT8
Channel8 Status
indicator
If the indicator is off, the link is down
Blinking: The indicator blinks when the network or
serial port is sending or receiving data.
Indicator light is on:
(1) The link is successfully connected
(2) UDP server mode and after receiving the client
message
(3) UDP client mode
PORT9
Channel9 Status
indicator
If the indicator is off, the link is down
Blinking: The indicator blinks when the network or
serial port is sending or receiving data.
Indicator light is on:
(1) The link is successfully connected
(2) UDP server mode and after receiving the client
message
(3) UDP client mode
PORT10
Channel10 Status
indicator
If the indicator is off, the link is down
Blinking: The indicator blinks when the network or
serial port is sending or receiving data.
Indicator light is on:
(1) The link is successfully connected
(2) UDP server mode and after receiving the client
message
(3) UDP client mode
PORT11
Channel11 Status
indicator
If the indicator is off, the link is down
Blinking: The indicator blinks when the network or
serial port is sending or receiving data.
Indicator light is on:
(1) The link is successfully connected
(2) UDP server mode and after receiving the client
message
(3) UDP client mode
PORT12
Channel12 Status
indicator
If the indicator is off, the link is down
Blinking: The indicator blinks when the network or
serial port is sending or receiving data.
Indicator light is on:
(1) The link is successfully connected
(2) UDP server mode and after receiving the client
message
(3) UDP client mode

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PORT13
Channel13 Status
indicator
If the indicator is off, the link is down
Blinking: The indicator blinks when the network or
serial port is sending or receiving data.
Indicator light is on:
(1) The link is successfully connected
(2) UDP server mode and after receiving the client
message
(3) UDP client mode
PORT14
Channel14 Status
indicator
If the indicator is off, the link is down
Blinking: The indicator blinks when the network or
serial port is sending or receiving data.
Indicator light is on:
(1) The link is successfully connected
(2) UDP server mode and after receiving the client
message
(3) UDP client mode
PORT15
Channel15 Status
indicator
If the indicator is off, the link is down
Blinking: The indicator blinks when the network or
serial port is sending or receiving data.
Indicator light is on:
(1) The link is successfully connected
(2) UDP server mode and after receiving the client
message
(3) UDP client mode
PORT16
Channel16 Status
indicator
If the indicator is off, the link is downBlinking: The
indicator blinks when the network or serial port is
sending or receiving data. Indicator light is on:
(1) The link is successfully connected
(2) UDP server mode and after receiving the client
message
(3) UDP client mode
[Note] Some special working mode indicator status:
Restore the factory, except for NET, the remaining LED is on for 1s, and then the other
indicators except the power supply are turned off；

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3.4 Size

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Chapter 4 Basic function
4.1 Mapping between Channels and serial ports
Baud rate：1200、2400、4800、9600、14400、19200、38400、57600、76800、115200、230400、
460800bps；
Data bit：8 bits；
Check bit: NONE, ODD, and EVEN are supported.
Stop bits: 1, 2 bits;
Hardware flow control: Not supported；
Channel
Serial Port
Indicator
light
protol of serial port
Factory mode, port
Channel1
COM1
PORT1
RS485
TCPS、8001
Channel2
COM2
PORT2
RS485
TCPS、8002
Channel3
COM3
PORT3
RS485
TCPS、8003
Channel4
COM4
PORT4
RS485
TCPS、8004
Channel5
COM5
PORT5
RS485
TCPS、8005
Channel6
COM6
PORT6
RS485
TCPS、8006
Channel7
COM7
PORT7
RS485
TCPS、8007
Channel8
COM8
PORT8
RS485
TCPS、8008
Channel9
COM9
PORT9
RS485
TCPS、8009
Channel10
COM10
PORT10
RS485
TCPS、8010
Channel11
COM11
PORT11
RS485
TCPS、8011
Channel12
COM12
PORT12
RS485
TCPS、8012
Channel13
COM13
PORT13
RS485
TCPS、8013
Channel14
COM14
PORT14
RS485
TCPS、8014
Channel15
COM15
PORT15
RS485
TCPS、8015
Channel16
COM16
PORT16
RS485
TCPS、8016
4.2 Local network parameter
4.2.1 Local IP address
STATIC: You can define the configuration IP address, subnet mask, default gateway, and DNS
server；

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DHCP (Dynamic IP address acquisition) : The device logs in to the server and automatically
obtains the IP address, subnet mask, gateway address, and DNS server address parameters assigned
by the server.；
4.2.2 DNS(Domain name resolution)
When a user enters a domain name, the system automatically queries the DNS server, which
searches the database and obtains the corresponding IP address. In static IP mode, the user can
customize the domain name resolution server to resolve the data of the private domain name server.
In dynamic IP mode, the device automatically follows the domain name resolution server configured
by the routing device, and the user only needs to modify the routing device You do not need to
configure this device.
How to configure DNS parameters:
4.2.3 Disconnection and reconnection period
The device periodically sends a reconnection request when it detects that it is disconnected from
the server. Therefore, disconnection Reconnection Time does not affect the normal connection
establishment time. You can set the request period to 5s by default.
4.2.4 Timeout restart (restart without data)
The device monitors data sending and receiving. If the device does not send or receive data for a
long time, the device automatically restarts to ensure long-term working stability.
By default, the restart interval is 30 minutes. You can customize the restart interval without data.
4.3 Hardware factory recovery
The Reload pin of the device will be continuously pressed for 5-10s and released. All the leds
except NET will light up and the device will restart. After the restart, the device will be restored to
factory.