ICP DAS USA BRK Series User manual

BRK Series User Manual
V1.0, 2023/01
BRK-2800 Series
IIoT MQTT Communication Server
Technical support: [e-mail]
Technical Editor: Jason Chen
Editor: Sandy Lin

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Warranty
All products manufactured by ICP DAS are under warranty regarding defective materials for a period of
one year, beginning from the date of delivery to the original purchaser.
Warning
ICP DAS assumes no liability for any damage resulting from the use of this product. ICP DAS reserves the
right to change this manual at any time without notice. The information furnished by ICP DAS is believed
to be accurate and reliable. However, no responsibility is assumed by ICP DAS for its use, not for any
infringements of patents or other rights of third parties resulting from its use.
Copyright
Copyright @ 2023 by ICP DAS Co., Ltd. All rights are reserved.
Trademark
The names used for identification only may be registered trademarks of their respective companies.
License
The user can use, modify and backup this software on a single machine. The user may not reproduce,
transfer or distribute this software, or any copy, in whole or in part.
Contact US
If you have any problem, please feel free to contact us.
You can count on us for quick response.
Email: [email protected]
For more product information please refer to website: https://www.icpdas.com

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Revision History

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Content of Table
Revision History.........................................................................................................................3
Content of Table.........................................................................................................................4
1. BRK Introduction ...................................................................................................................5
1.1 Introduction .....................................................................................................................5
1.2 Features..........................................................................................................................5
1.3 Specifications..................................................................................................................6
1.4 Appearance.....................................................................................................................7
1.5 Dimensions .....................................................................................................................8
2. Quick Start: Hardware/Network Connection........................................................................9
2.1 Hardware Connection.....................................................................................................9
2.1.1 Preparations for Devices..................................................................................................9
2.1.2 Hardware Wiring ..............................................................................................................9
2.2 Network Connection......................................................................................................10
2.2.1 Connection by Factory Default Settings (For New BRK).................................................11
2.2.2 Connection by Utility Searching......................................................................................14
3. Main Function Settings........................................................................................................17
3.1 MQTT Introduction........................................................................................................17
3.1.1 Forward the MQTT messages for BRK-2800 .................................................................18
4. Main Menu: Parameter Descriptions ..................................................................................20
4.1 Main Menu - System Setting.........................................................................................20
4.1.1 Account Setting..............................................................................................................20
4.1.2 Network Setting..............................................................................................................21
4.1.3 Time Setting...................................................................................................................22
4.1.4 Language.......................................................................................................................23
4.1.5 Project File.....................................................................................................................23
4.2 Main Menu –MQTT Setting..........................................................................................24
4.2.1 Local broker Setting .......................................................................................................24
4.2.2 MQTT bridge Setting......................................................................................................25
4.2.3 Users .............................................................................................................................26
4.2.4 Rule engine ..................................................................................................................27
4.3 Main Menu –Advanced Setting....................................................................................28
4.3.1 Keep Alive Setting..........................................................................................................28

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1. BRK Introduction
1.1 Introduction
BRK Series is an Communication Server that specially provides Broker function of MQTT protocol for
MQTT message distribution and concentrator in M2M and Industrial Internet of Things environments. The
BRK Series is compatible with the MQTT version V.3.1, V.3.1.1 and V.5.0 protocol. It supports many
functions such as QoS message quality mechanism, retains mechanism, identity authentication,
communication encryption, last message (Last Will), and bridge. The method of Web UI settings can
quickly set up BRK functions. This reduce the burden of setting up the broker by user oneself and the
maintenance cost. Besides, BRK Series provides Bridge, Cluster, Load Balancer, and High Availability
functions. By forming multiple BRK Series a group to a better Redundancy system can prevent field
systems from stopping services due to hardware or network failures.
1.2 Features
Provide Bridge and Cluster functions, which allows excellent scalability
The Bridge and Cluster functions can expand the limits of service and data sources for MQTT Broker
applications:
Bridge function
Allows BRK series to forward/subscribe the messages to other BRK series or third-party MQTT
Brokers. By forwarding messages, it can direct the message to other BRK series service side. By
subscribing to the remote brokers, it can increase the data sources.
Cluster function
Allows BRK series in the same group to share data to others with lower resources. When the
number of connections and messages exceeds the limit of a BRK, using the cluster function can
increase the number of connections to meet the needs.
Support High Availability architecture
When there are more than two BRK devices in the same site, they can be set as backup between
each other. When the BRK device that is providing services fails or goes offline, other BRK device can
detect and take over in a short time to ensure that the service will not be interrupted for a long time.
Support Load Balancing Function, which can effectively configure tasks and optimize MQTT
communication
The BRK load balancing function can be used in conjunction with the MQTT bridging or clustering
function. A BRK device in this group provides a single fixed IP and communication port to connect
other BRK clients in the group, which can be effectively allocated to the BRK devices in the group for
MQTT communication services. This function simplifies user configuration and maximizes the overall
system service capacity: when a single or a small number of devices in the group fail, the connection
can be redistributed to other BRK devices to continue to provide communication services.
Support Redundancy System
Based on the High Availability architecture and Load Balancing function. This redundancy is hardware
backup. In the entire MQTT Broker group, if one of the BRKs fails or disconnects, the other BRKs with

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normal functions will take over to provide MQTT services, and users do not need to perform other
related settings.
1.3 Specifications
Model
BRK-2841M
Main Unit
CPU
Quad-core ARM CPU, 1.6 GHz/Core
System Memory
DDR3 SDRAM 1 GB
Storage
Flash 8 GB
Non-Volatile Memory
FRAM 64 KB, MRAM 128 KB
Ethernet
Ports
RJ-45 x 2, 10/100/1000 Base-TX
(Auto-negotiating, Auto MDI/MDI-X)
Power
Input Range
+12〜+48 VDC
Consumption
4.8 W
Environmental
Operating Temperature
-25〜+75〫C
Storage Temperature
-40〜+80〫C
Humidity
10〜90% RH,Non-condensing
Software
MQTT Client Connection Numbers
Max. 100000
MQTT Broker
Basic Features
Bridge Function
Support
Cluster Function
Support
QoS (Quality of Service)
Support QoS0, QoS1, QoS2
MQTT Protocol
Support V3.1 / V3.1.1 / V5.0
Retained Message
Support
Last Will Message
Support
System Topic($SYS/#)
Support
Delay Publish
Available Soon
Topic Alias
Available Soon
Supported Protocol
TCP/SSL
Support
Websocket (SSL)
Available Soon
STOMP
Available Soon
MQTT-SN
Available Soon
CoAP
Available Soon
LwM2M
Available Soon
Identity Authentication
Client ID
Support

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User Account & Password
Support
IP Address
Support
Load Balancing Function
Support
High Availability Architechture
Support
1.4 Appearance

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1.5 Dimensions

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2. Quick Start: Hardware/Network Connection
This chapter describes the devices hardware connection, network connection and quick setting for the
BRK Controller, and how to connect to the BRK controller web-based UI via a browser. Next chapter will
set up web functions, and complete a demo project. (Please refer to Chapter 3).
2.1 Hardware Connection
This section describes the hardware wiring and connection for the BRK Series.
2.1.1 Preparations for Devices
In addition to the BRK controller (Ex: BRK-2841M) , please prepare the following:
1. Computer: PC/NB Connect to the local network and can set up the network
2. Ethernet Hub or Switch: e.g. NS-205
3. Power Supply: +12 ~ +48, e.g. MDR-60-24
2.1.2 Hardware Wiring
Use LAN2 of BRK-2800 to connect to the PC through a network hub/switch, or directly connect to the
PC's network interface.
After power is connected, please [ wait for 1 minute ] for BRK boot procedure. When the "RUN” and
“PWR" lights of the BRK start to flash green and red, it means the boot is completed, and the connection
and setting can be performed.
Switch/Hub
Cable
Power Supply
Power Supply
12 ~ 48 VDC
BRK
Series
PC/NB
V
-V
S
Cable
LAN2

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2.2 Network Connection
There are three ways to log in to the BRK Web UI (User Interface) through BRK network connection. The
following is a brief description, and then the steps are described in subsections:
If the device has just arrived from the factory or is used for the first time (A), it is recommended to use
the connection method in Section 2.2.1 (same as the "Quick Start" included with the shipment).
If the device has been set up to connect but does not know the IP (B), it is recommended to use the
connection method in Section 2.2.2 (use Utility to search for the devices).
If the device has been set up and the connection IP (C) is known, you can directly enter the IP
connection in the browser website to log in.
The methods to login the BRK Web UI:
A. Using Factory Default Setting:
This way is suitable for those who is setting a new BRK or the PC network IP is not in the same
domain with BRK. This method changes the PC network IP to match the BRK factory default settings
to connect and login the Web UI. (Refer to Chapter 2.2.1)
B. Using Software Utility:
Suitable for quick setting when multiple BRKs are connected in the same network but each IP
address is unknown. BRK products provide a free software utility to automatically search and
connect to BRKs on the internet and can Log into BRK Web UI.(Refer to Chapter 2.2.2)
C. Using IP Address:
Suitable for the situation while BRK has a fixed IP and in the same domain network with the PC.
If the BRK has a fixed IP and in the same domain with the PC, users can directly enter the IP in the
address bar of a web browser and log in to the Web UI of the BRK.

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2.2.1. Connection by Factory Default Settings (For New BRK)
The factory default settings of the BRK series are as the following table:
Factory Default Settings of BRK
Network
IP
192.168.255.1
Assign BRK-2800 a new IP setting
according to your case.
Netmask
255.255.0.0
Gateway
192.168.1.1
Web UI
Account
Username
root
After the first login, change the
default username/password to
use other functions.
Password
root
1. Change the PC’s IP setting as following. (Write down the PC original network settings before
modify.)
IP
192.168.255.10
Subnet mask
255.255.0.0
Gateway address
192.168.1.1
2. Make sure the PC and BRK is connecting through Ethernet. Then open a PC side browser (Ex:
Chrome, IE…).
Type http://192.168.255.1 in the URL address. Use Web UI default username / password “root” /
“root” to login the system.

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3. Click【System Setting】【Account Setting】, change the Username/password first, or user
cannot use any other function (New design for data security)
Password Setting rules:

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4. Click【System Setting】【Network Setting】to change the IP setting by user network.
Note: While the network cable has been correctly connected to LAN1 and LAN2 will show up setting
interface.
5. Save the IP setting, restore the PC original IP settings, and type the new IP in the browser as step-2 to
login the Web UI of BRK. Then configure user’s BRK project.

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2.2.2. Connection by Utility Searching
Setting new BRK or the new user please use the method in the Chapter 2.2.1. (Method A)
If the BRK has a fixed IP and in the same domain as the PC, users can directly enter the IP in the address
bar of a web browser and log in to the Web UI of the BRK. (Method C)
This section introduces the 2nd method(B) that users use the BRK Utility to search the Network IP. This
method is suitable for connecting multiple BRK series controllers to the Internet, but the IP addresses
of BRK are unknown or need to modify the BRK quickly.
The Utility is a free tool software to quickly search each UA/BRK/UA_IO series in the network and connect
to its Web UI for setting UA/BRK/UA_IO series products and project.
Download and install the Utility (UAandBRK_Search_Utility), and then run it to connect to the device.
Please download the utility program from the website:
https://www.icpdas.com/en/download/index.php?nation=TW&kind1=&model=&kw=BRK
1. Install and execute the Utility
Run the Utility (file name: UAandBRK_Search_Utility.exe) to install the Utility program.

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2. Search the UA/BRK/UA-IO series devices
Click the “Search Device” button, the utility will search and list all BRK devices network.
3. Connect to the BRK Series
Double click the device name (left column) or the IP address (right column) you’d like to connect to,
and it will directly link to the BRK webpage via the default Web browser (IE/Chrome…).
or
1
2
2

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4. Connection to the BRK Web UI
The default web browser will be run and direct go to the BRK login web site.
Please enter the username and password to login the BRK Web UI.
The default username: root.
The default password: root.
After login in, change the default Username/password first, or user cannot use any other function
(New design for data security).
5. Login the Web BRK of the BRK Series
When login into the web interface, the BRK default home page (the main configuration screen) will
show as below, and will automatically read setting of that BRK to the webpage.

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3. Main Function Settings
This chapter describes the main function and setting method of the BRK .
3.1 MQTT Introduction
MQTT (Message Queuing Telemetry Transport) is a communication architecture developed by IBM for the
Internet of Things (IoT). It is useful for mobile applications because of its small size, low power usage,
minimized data packets, and efficient distribution of information to one or many receivers, especially in
unstable networks. MQTT is implemented based on the publish/subscribe architecture. In its network,
there is a server (Broker) responsible for the intermediary layer of information, and other devices can
send information to the Broker by publishing a topic, or get information from the Broker by subscribing
to a topic.
BRK-2800 is Sever of MQTT, can connect with large amount of ICP DAS modules with MQTT protocol: for
example, the DL-300 series of data Logger sensors which can measure CO, CO2, Temperature, Humidity
and Dew Point information. The communication mechanism that supports MQTT publishes the collected
on-site environment parameters to the BRK-2800, and can simply monitor the on-site environment from
a long distance by subscribing to the BRK-2800 using a mobile device or SCADA software that supports
MQTT Client. The Ethernet I/O modules of the MQ-7200M series can automatically publish the collected
digital I/O values to the BRK-2800 through MQTT. The MQTT Client only needs to subscribe and publish
to the BRK-2800 to monitor or change remotely DO status of the Ethernet I/O modules.
MQTT Architecture of the BRK:

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3.1.1 Forward the MQTT messages for BRK-2800
This chapter use the DL-302 (Client) as an example, to perform “Forward the MQTT message by BRK-2800
(Broker)”.
DL-302 need to set up the IP and Port of Broker Just communication, please refer to the DL-302 user
manual chapter 4.5 MQTT
(https://www.icpdas.com/web/product/download/iiot/sensor/dl-300/document/manual/DL-
300_User_Manual_v1.2.0_en.pdf)
After setting is completed, DL-302 will automatic publish message for the BRK-2800; any MQTT Client
device can subscribe to BRK-2800 to receive messages published by DL-302. Here we take the
MQTT_fx_Client as an example: enter the IP address and Communication Port of BRK-2800, and connect
to the BRK-2800 after the settings are correct.
After successfully connect, now BRK-2800 can operate publish and subscribe.

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In order to make sure that the DL-302 has correctly published the environmental information to the BRK-
2800, subscribe to the Wildcards character [#] of the topic to see the information published by the DL-
302. Please refer to the following capture for the steps.

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4. Main Menu: Parameter Descriptions
4.1 Main Menu - System Setting
System Setting is the first item of the Main Menu. This item is about the settings related to the hardware
and operating system.
4.1.1 Account Setting
Function: Display and set up the login username and password of the BRK Web UI.
Menu Path:【System Setting】【Account Setting】
System Setting > Account Setting
Account
The username for login the BRK Web UI. Factory default: root. Cannot be null.
After the first login with the factory default settings, change the default
username/password first, or user may not be able to use any other function.
Account setting rules:
1. At least 8 characters
2. At least 2 upper case letter
3. At least 2 numbers
Password
The login password for the BRK Web UI. Factory default: root. Cannot be null.
After the first login with the factory default settings, change the default
username/password first, or user may not be able to use any other function.
Password setting rules:
1. At least 8 characters
2. At least 2 upper case letter
3. At least 2 numbers
Save
Click to save the settings of this page.