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AiR GUARD
Industrial IoT Cellular Smart Security
Gateway
Building Trust in IIoT Devices
AiR GUARD Industrial IoT Cellular Smart Security Gateway
2
Preface
Audience
This guide is designed for the person who installs, configures, deploys, and maintains the Ethernet network.
This document assumes the reader has moderate hardware, computer, and Internet skills.
Document Revision Level
This section provides a history of the revision changes to this document.
Revision
Document Version
Date
Description
A
Version 1
09/30/2021
First version of document
A
Version 2
10/14/2021
Expanded descriptions of all device functions
A
Version 3
06/07/2022
All new function release document
A
Version 3.1
07/18/2022
Adjust Data Type description of Tag Rule and LED
A
Version 4
11/07/2023
Update Smart Data Logging function.
Add Event Engine and LINE Notify
Add Fare Saving warning.
Revise wording and Web Console user interface
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Contents
Preface .......................................................................................................................................................................... 2
Audience ............................................................................................................................................................... 2
Document Revision Level .................................................................................................................................. 2
Contents ............................................................................................................................................................... 3
Chapter 1 Introduction .............................................................................................................................................. 6
1.1 Introduction .................................................................................................................................................. 6
1.2 Contents List ................................................................................................................................................. 7
Package Contents ....................................................................................................................................... 7
Chapter 2 Hardware Guide ....................................................................................................................................... 8
2.1 Product Overview ........................................................................................................................................ 8
2.1 DC Power ...................................................................................................................................................... 9
2.3 LEDs ............................................................................................................................................................ 10
2.4 RESET key .................................................................................................................................................. 11
2.5 Hardware Installation ............................................................................................................................... 12
Mount the Unit ........................................................................................................................................ 12
Insert the Nano SIM Card ...................................................................................................................... 13
SD Card ..................................................................................................................................................... 14
Connecting DI/DO Devices .................................................................................................................. 15
Connecting Serial Devices ..................................................................................................................... 16
Connecting to the Network or a Host ................................................................................................ 16
Chapter 3 Web Console Configuration ................................................................................................................17
3.1 Introduction ............................................................................................................................................... 17
3.2 Status .......................................................................................................................................................... 19
Overview ................................................................................................................................................... 19
Firewall ...................................................................................................................................................... 22
Routes ........................................................................................................................................................ 23
System Log ................................................................................................................................................ 24
Kernel Log ................................................................................................................................................. 25
Realtime Graphs ...................................................................................................................................... 26
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3.3 System ......................................................................................................................................................... 27
System ....................................................................................................................................................... 27
Administration ......................................................................................................................................... 30
Mount Points ............................................................................................................................................ 32
Backup / Flash Firmware ....................................................................................................................... 33
Reboot ....................................................................................................................................................... 36
3.4 VPN ............................................................................................................................................................. 37
OpenVPN .................................................................................................................................................. 37
OpenVPN Log .......................................................................................................................................... 39
3.4 Service......................................................................................................................................................... 40
Mosquitto ................................................................................................................................................. 40
3.5 Network ...................................................................................................................................................... 42
Interfaces .................................................................................................................................................. 43
Hostnames ................................................................................................................................................ 60
Static Routes ............................................................................................................................................ 62
Diagnostics ............................................................................................................................................... 64
Firewall ...................................................................................................................................................... 66
3.6 Smart Data Logging .................................................................................................................................. 73
Azure Sphere Port Settings ................................................................................................................... 76
Protocol Selection to Cloud .................................................................................................................. 79
JSON for Period Data Logging.............................................................................................................. 86
Period Data Logging................................................................................................................................ 90
Real-Time Data Logging ......................................................................................................................... 94
CA Certificate ........................................................................................................................................... 99
Modbus Log ............................................................................................................................................ 100
MQTT Log ............................................................................................................................................... 101
MQTT Data Log ..................................................................................................................................... 102
Azure Log ................................................................................................................................................ 103
Tag Diagnostics Shown ........................................................................................................................ 104
Tag Diagnostics Settings ...................................................................................................................... 105
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3.7 Event Engine ............................................................................................................................................ 106
Event Ping ............................................................................................................................................... 106
Event SMS............................................................................................................................................... 108
3.8 Cloud Service ........................................................................................................................................... 109
EWFOTA Settings ................................................................................................................................. 109
3.9 Remote Service ....................................................................................................................................... 110
MQTT Remote Service Overview ...................................................................................................... 110
3.10 Fare Saving ............................................................................................................................................. 112
3.11 Notify Messages ................................................................................................................................... 113
LINE Settings .......................................................................................................................................... 113
3.12 Logout ..................................................................................................................................................... 114
Appendix .................................................................................................................................................................. 115
Specifications ................................................................................................................................................. 115
Contact Information .............................................................................................................................................. 117
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Chapter 1 Introduction
1.1 Introduction
Congratulations on your purchase of this product: AiR GUARD Industrial IoT Cellular Smart Security Gateway.
Over the past few years, the Internet of Things (IoT) has captured headlines across the world. With its network
of “smart,” sensor-enabled devices that can communicate and coordinate with one another via the Internet,
the IoT can facilitate computer-mediated strategies for managing city resources, energy management, and
numerous other tasks. The IoT’s way forward may be complicated, however. As with any market in its early stages,
weak security is often an important concern for many projects. There have already been instances where hackers
have wreaked havoc by infiltrating connected IoT devices. With security being so essential, EtherWAN has
developed the AiR GUARD, an advanced IIoT cellular gateway specifically optimized for secure IoT data solutions.
Running with Microsoft’s Azure Sphere, it not only provides secure connectivity, but also provides industrial
protocols as well as easy to use data pre-processing and conversion for cost-efficient Edge to Cloud connection.
Main Features:
• Built-in Microsoft Security Technology
• Highly Reliable Network Connection
• Friendly 30W PoE for Connecting PoE Devices
• Powerful Data Processing and Conversion
• Automatic Over-the-air (OTA) Firmware Updates
Before you install and use this product, please read this manual in detail.
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1.2 Contents List
Package Contents
Items
Description
Contents
Quantity
1
AiR GUARD Security Gateway
1 pc
2
Cellular Antenna
2 pcs
3
3 pin Terminal Block
1 pc
4
4 pin Terminal Block
1 pc
5
6 pin Terminal Block
1 pc
7
DIN-Rail Bracket
1 pc
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Chapter 2 Hardware Guide
2.1 Product Overview
COM Port
2 x RS485
Power
Terminal Block
RJ-45 10/100/1000 BASE-T
PoE-PSE and LAN port
RJ-45 10/100/1000 BASE-T
WAN port
D/I D/O
Terminal Block
RJ-45 10/100 BASE-T
Azure Sphere managed
LAN Device port
RESET key
LED group
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2.1 DC Power
The AiR GUARD can be powered by connecting a DC power source to the terminal block. It supports 12 to 24VDC
power input. VIN connects to DC 12V and GND connects to DC 0V from your Power Supply, EGND is for Earth
ground. The following chart indicates the power terminal block pin assignments. Please check carefully and
connect to the right power requirements and polarity.
Reminding : Once PoE-PSE port connect to IP Camera, the DC Power Input should be 24VDC and 2A
at leased.
Description
Pin
VIN (DC+V)
1
GND (DC 0V)
2
Earth GND (Grounding)
3
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2.3 LEDs
Position
Position
Position
COM2
Serial 2 Link Status:
Green – Tx data sending
Red - RX data receiving
COM 1
Serial 1 Link Status:
Green - TX data sending
Red – Rx data receiving
AZS
Azure Sphere Status:
Steady Orange – Sphere
platform is under OTA
upgrading, combined COM1
and COM2 steady Green
Green blinking – Sphere is
regular running
Steady Green or steady
Off – Sphere hangs.
LTE
Cellular Link Status:
Red Blinking – SIM is not ready
Green Blinking – Cellular
Connected
Orange+RED Blinking – PS call is
not ready
Green Light – linked with good RSSI
Orange Light – linked with medium
RSSI
Red Light – linked with poor RSSI
SYS
System Status:
Off – Initial / all Network
disconnected
Green Light – External link is UP,
such as WAN and LTE connection
to Internet.
PWR
Power Indicator
Orange – Power on
under initialization
Green – Power on and
AiR GUARD initialization
completed
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2.4 RESET key
You can reboot device via a pin to RESET hole, or you can be “Reset to Default” by long press RESET hole by a
pin for 30 seconds.
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2.5 Hardware Installation
This chapter describes how to install and configure the hardware
Mount the Unit
The AiR GUARD can be mounted on a wall, horizontal plane, or DIN Rail in a cabinet with the mounting
accessories. The mounting accessories are not screwed on the product when shipped from factory. Screw the
DIN-rail bracket on the product first.
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Insert the Nano SIM Card
Follow the figures sequence below to insert SIM card
Fig 1 Fig 2
Fig 3 Fig 4 Fig 5
Fig 6 Fig 7
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SD Card
SD card is for System Log, Kernel Log, and Data Log storage. User have to ready it in slot, and not for
eject.
Electrical spec is Micro SD , SDHC, Class 10 or U1, 32GB above.
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Connecting DI/DO Devices
There is one DI (digital input, Isolated, "Logic 0": 0-2V, "Logic 1": 5-30V) and one DO (digital output, Isolated,
Non-Relayed Output, 24V/300mA for each port) port, which provide a voltage source to a grounded load.
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Connecting Serial Devices
The AiR GUARD has a 6-pin Terminal Block serial port for connecting to your serial devices. Connect the serial
device to the terminal block with the right pin assignments of RS-485 (shown below).
Description
Pin
COM1 – D+
1
COM1 – D-
2
COM1 - GND
3
COM2 – D+
4
COM2 – D-
5
COM2 - GND
6
Connecting to the Network or a Host
Use the LANPSE port to connect 10/100/1000Mbps Ethernet. It can auto detect the transmission speed on the
network and configure itself automatically. Connect one Ethernet cable to the RJ-45 port (LAN) of the device and
plug another end of the Ethernet cable into your computer’s network port. In this way, you can use the RJ-45
Ethernet cable to connect to the host PC’s Ethernet port for configuring the device.
Additionally, The LANPSE port can connect to powered devices without power. WAN/LAN connects the WAN
port for fixed WAN and LANAZS connects to Ethernet low speed device like Modbus/TCP devices.
Pin 1 2 3 4 5 6
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Chapter 3 Web Console Configuration
In the following chapters, you will see these command blocks
SAVE & APPLY to save and immediately take effect in system.
SAVE is just to save into configuration,
RESET is to forget the settings just done.
3.1 Introduction
To configure AiR GUARD for the first time, use an Ethernet cable to connect to the LANPSE port. To connect to
the AiR GUARD web console, open a web browser and enter the AiR GUARD IP address.
The default IP address is 192.168.123.254. Default username is “admin” and password is “Guard_2022_!@#$%”
➢ Example: https://192.168.123.254/
Default Login Account:
User: admin
Password: Guard_2022_!@#$%
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At the first-time login, the system will request a renew password page to change password.
Be careful to save this information. Otherwise, the only way to re-access is to long press RESET key to reset
device to default settings, including default password.
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3.2 Status
There are six status screens for monitoring the device and connections. They are: Overview, Firewall, Routes,
System Log, Kernel Log, and Realtime Graphs
Overview
The Overview status screen is divided into System, Memory, Network, Active DHCP Leases, and Wireless
sections.
System - This section displays the hostname, model, architecture, firmware version, kernel version, local time,
uptime, and load average.
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Memory – Displays total available, used, buffered, and cached memory.
Network – Displays protocol, IP address, Gateway, DNS and time connected for IPv4 upstream.
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