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SEW832 MQTT Gateway User’s Manual
Version 1.1
This document is proprietary to MaxLong Corporation. Use or disclosure of the document, or the information
contained therein, for any purposes other than MaxLong purposes is NOT permitted without prior written
authorization by MaxLong
2
Table of Contents
1. Introduction------------------------------------------------------------------Page3
1.1Product Views-------------------------------------------------------------Page4
1.2 Wiring Architecture------------------------------------------------------Page5
2. Configuration----------------------------------------------------------------Page6
2.1Configuration via Web---------------------------------------------------Page7
2.2 Configuration Sections------------------ -------------------------------Page7
2.2.1 System Setup------ --------------------------------------------------Page7
2.2.2 Network Setup-------------------------------------------------------Page9
2.2.3 Serial Port Setup-----------------------------------------------------Page14
2.2.4. MQTT Setup-----------------------------------------------------------Page14
2.2.5. TOPIC Setup------------------------------------------------------------Page16
2.2.6. Logger Page------------------------------------------------------------Page20
2.2.7. Data acquisition device style settings----------------------------Page21
2.2.8. MQTT Topic List--------------------------------------------------------Page22
2.2.9 Reset Button-------------------------------------------------------------Page23
SEW832 MQTT Gateway User’s Manual
Version 1.1
This document is proprietary to MaxLong Corporation. Use or disclosure of the document, or the information
contained therein, for any purposes other than MaxLong purposes is NOT permitted without prior written
authorization by MaxLong
3
1.Introduction
This SEW832 Ethernet+WiFi MQTT Gateway provides the ways of
connecting Modbus Serial and TCP devices to MQTT Broker via Ethernet
and Wireless LAN (Wi-Fi 802.11 b/g/n ). It is designed to operate serial
ports through Ethernet (10/100Mbps) and wireless (Wi-Fi 802.11 b/g/n) in
Modbus TCP and RTU/ASCII networks. As the data is transmitted via
Modbus protocol, therefore data acquisition and controlling is available to
go through Intranet and Internet.
The wireless supports 802.11 b/g/n in AP/Station mode with
WEP/WPA/WPA2 encryption for data transmission security. Ethernet
support 10/100 Mbps auto-detecting communication speeds.
There are two serial ports as one is a RS-232 and other one is RS-
422/485. Configuration is easy to operate via web page setup.
This Gateway is designed to operate 2 Serial ports (RS-232 and RS-422/485)
over wireless and Ethernet network. This device is a high performance design
composed with carefully selecting qualified components from reliable and
certified sources. This operation manual will guide you to configure functions
step by step.
This MQTT Gateway Support for MQTT protocol provides a perfect solution
to make your industrial Sensor devices connect to Industrial Internet of
Things (IIoT) system instantly via Wireless and/or Ethernet LAN. To run with
MQTT client tools on the PC/NB or mobile devices, users can simply and
effectively control/monitor remote sensors. It becomes the ideal device for
transmitting the data from your RS-232 or RS-422/485 Serial interface
devices or remote TCP making it possible for your software to access data or
control the I/O via MQTT Broker.
SEW832 MQTT Gateway User’s Manual
Version 1.1
This document is proprietary to MaxLong Corporation. Use or disclosure of the document, or the information
contained therein, for any purposes other than MaxLong purposes is NOT permitted without prior written
authorization by MaxLong
4
1.1 Product Views
Figure 1 Product Views
SEW832 MQTT Gateway User’s Manual
Version 1.1
This document is proprietary to MaxLong Corporation. Use or disclosure of the document, or the information
contained therein, for any purposes other than MaxLong purposes is NOT permitted without prior written
authorization by MaxLong
5
1.2 Wiring Architecture
SEW832 MQTT Gateway User’s Manual
Version 1.1
This document is proprietary to MaxLong Corporation. Use or disclosure of the document, or the information
contained therein, for any purposes other than MaxLong purposes is NOT permitted without prior written
authorization by MaxLong
6
2. 2.Configuration
2.1Configuration Via Web
Step1➔The first thing is to configure the Host PC’s IP address
IP :192.168.1.xx
Step2➔Open a web page of configuration http://192.168.1.100
Step3➔Default User name: “admin” and Password: “admin”
Step4➔And now you have successfully connected to this MQTT
Gateway
There are 6 setup pages as “System”, “Network”, “Serial” ,“MQTT”,
“Topic”, “Logger”.
SEW832 MQTT Gateway User’s Manual
Version 1.1
This document is proprietary to MaxLong Corporation. Use or disclosure of the document, or the information
contained therein, for any purposes other than MaxLong purposes is NOT permitted without prior written
authorization by MaxLong
7
2.2 Configuration Sections
2.2.1 System Setup
1.System: Where one can change Password, set up Auto Reset time and
modify Device Name, Description of device etc.
2. Appearance of Wireless and Ethernet setup:
SEW832 MQTT Gateway User’s Manual
Version 1.1
This document is proprietary to MaxLong Corporation. Use or disclosure of the document, or the information
contained therein, for any purposes other than MaxLong purposes is NOT permitted without prior written
authorization by MaxLong
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3. NTP: Enable / Disable NTP function; Set up NTP server and Time
Zone.
4. Firmware update:
(1) If necessary, click “Browse” to open file manager
SEW832 MQTT Gateway User’s Manual
Version 1.1
This document is proprietary to MaxLong Corporation. Use or disclosure of the document, or the information
contained therein, for any purposes other than MaxLong purposes is NOT permitted without prior written
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(2) Select the file with specified version and click “Confirm” button.
(3) When the selected file name appears on the input column, click
“Update” button.
5. Up to now, Setup is successfully configured. Please click “Save” this
page before “Save and Reboot” for permanent web pages.
。
2.2.2 Network Setup
1. Wireless section:
SEW832 MQTT Gateway User’s Manual
Version 1.1
This document is proprietary to MaxLong Corporation. Use or disclosure of the document, or the information
contained therein, for any purposes other than MaxLong purposes is NOT permitted without prior written
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(1)Type: to select “INFRASTRUCTURE” or “ACCESS POINT”
(2)When selected “INFRASTRUCTURE”, go to SSID, click “Scan” will
get list of available SSID, select one to link.
(3)Input password for the AP and assign STATIC IP address
(4)In NB/PC, choose same SSID to link. NB/PC must close Ethernet in
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