Vantron DE20-BT User manual
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Revision History
No. Description Date
V1.0 First release Oct. 19, 2022
V1.1 Modified interface description as per the design change Nov. 10, 2022
V1.2 Updated description on ERROR LED May. 11, 2023
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Table of Contents
Foreword ................................................................................................................................. 1
CHAPTER 1 INTRODUCTION .............................................................................................................. 5
1.1 Product Overview............................................................................................................... 6
1.2 Unpacking........................................................................................................................... 7
1.3 Specifications ..................................................................................................................... 8
1.4 Product Layout ................................................................................................................... 9
1.5 Mechanical Dimensions ................................................................................................... 11
1.6 Power Supply and Consumption ...................................................................................... 11
CHAPTER 2GETTING STARTED .......................................................................................................... 12
2.1 Setting up the Device ....................................................................................................... 13
2.2 Connectors and LED Indicators......................................................................................... 15
CHAPTER 3DEVICE PROVISIONING................................................................................................... 17
3.1 Connecting a Field Device ................................................................................................ 18
3.2 Connecting the Data Center............................................................................................. 20
3.3 Data Transport Test .......................................................................................................... 23
3.4 Exploring More Functions with the Vantron Dtool .......................................................... 25
3.4.1 Status ............................................................................................................................... 25
3.4.2 Configuration.................................................................................................................... 25
3.4.3 DTU Management ............................................................................................................ 28
3.4.4 Logs ............................................................................................................................... 32
3.4.5 Repair DTU ....................................................................................................................... 33
3.5 Troubleshooting ............................................................................................................... 35
CHAPTER 4 DISPOSAL AND WARRANTY ............................................................................................ 37
4.1 Disposal ............................................................................................................................ 38
4.2 Warranty .......................................................................................................................... 39
Appendix Regulatory Compliance Statement ........................................................................ 40
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Foreword
Thank you for purchasing Vantron DE20-BT Industrial Database Transaction Unit (“the device”
or “the Product”). This manual intends to provide guidance and assistance necessary on
setting up, operating and maintaining the Product. Please read this manual and make sure you
understand the structure and functionality of the Product before putting it into use.
Intended Users
This manual is intended for:
•Network administrators
•Technical support engineers
•Other users
Copyright
Vantron Technology, Inc. (“Vantron”) reserves all rights of this manual, including the right to
change the content, form, product features, and specifications contained herein at any time
without prior notice. An up-to-date version of this manual is available at www.vantrontech.com.
The trademarks in this manual, registered or not, are properties of their respective owners.
Under no circumstances shall any part of this user manual be copied, reproduced, translated,
or sold. This manual is not intended to be altered or used for other purposes unless otherwise
permitted in writing by Vantron. Vantron reserves the right of all publicly released copies of
this manual.
Disclaimer
While all information contained herein has been carefully checked to assure its accuracy in
technical details and typography, Vantron does not assume any responsibility resulting from
any error or features of this manual, nor from improper uses of this manual or the software.
It is our practice to change part numbers when published ratings or features are changed, or
when significant structure changes are made. However, some specifications of the Product
may be changed without notice.
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Technical Support and Assistance
Should you have any question about the Product that is not covered in this manual, contact
your sales representative for solution. Please include the following information in your
question:
•Product name and PO number;
•Complete description of the problem;
•Error message you received, if any.
Vantron Technology, Inc.
Address: 48434 Milmont Drive, Fremont, CA 94538
Tel: (650) 422-3128
Email: sales@vantrontech.com
Regulatory Information
The Product is designed to comply with:
•Part 15 of the FCC Rules;
•UL
Please refer to Appendix for Regulatory Compliance Statement.
Symbology
This manual uses the following signs to prompt users to pay special attention to relevant
information.
Caution for latent damage to system or human injury
Attention to important information or regulations
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General Safety Instructions
The Product is supposed be installed by knowledgeable, skilled persons familiar with local
and/or international electrical codes and regulations. For your safety and prevention of
damage to the Product and other equipment connected to it, please read and observe
carefully the following safety instructions prior to installation and operation. Keep this manual
well for future reference.
•Do not disassemble or otherwise modify the Product. Such action may cause heat
generation, ignition, electronic shock, or other damages including human injury, and may
void your warranty.
•Keep the Product away from heat source, such as heater, heat dissipater, or engine casing.
•Do not insert foreign materials into any opening of the Product as it may cause the Product
to malfunction or burn out.
•To ensure proper functioning and prevent overheating of the Product, do not cover or
block the ventilation holes of the Product.
•Follow the installation instructions with the installation tools provided or recommended.
•The use or placement of the operation tools shall comply with the code of practice of such
tools to avoid short circuit of the Product.
•Cut off the power before inspection of the Product to avoid human injury or product
damage.
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Precautions for Power Cables and Accessories
Use proper power source only. The Product supports 5V-36V power supply. Make sure
the supply voltage falls within the specified range.
Place the cables properly at places without extrusion hazards.
Use only approved antenna(s). Non-approved antenna(s) may produce spurious or
excessive RF transmitting power which may violate FCC limits.
Cleaning instructions:
•Power off the Product before cleaning
•Do not use spray detergent
•Clean with a damp cloth
•Do not try to clean exposed electronic components unless with a dust collector
Power off and contact Vantron technical support engineer in case of the following faults:
•The Product is damaged
•The temperature is excessively high
•Fault is still not solved after troubleshooting according to this manual
Do not use in combustible and explosive environment:
•Keep away from combustible and explosive environment
•Keep away from all energized circuits
•Unauthorized removal of the enclosure from the Product is not allowed
•Do not change components unless the power cable is unplugged
•In some cases, the Product may still have residual voltage even if the power cable is
unplugged. Therefore, it is a must to remove and fully discharge the Product before
replacement of the components.
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1.1 Product Overview
As part of Vantron’s overall solution for industrial automation and device communication,
Vantron DE20-BT is an entry-level database transaction unit (DTU) that features a serial
port and Bluetooth 5.0 for simple-process data collection.
DE20-BT supports low-rate carrier network (CAT M) and multiple data centers. With such
network protocols as PPP, IP, and TCP/UDP supported, real-time device data is accessible
and unvarnished transmission is feasible.
Thanks to its compact size and less than 5W power consumption, DE20-BT saves great
trouble for users in its installation and maintenance. Besides, it supports 5V~36V wide input
voltage and -20℃~ +70℃industrial-grade extended temperature range, and implements
a fanless heat sink for device heat dissipation, making it a cost-effective IoT solution for
customers. DE20-BT is particularly designed for power distribution monitoring, oil & gas
transportation, environment monitoring, etc.
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1.2 Unpacking
The Product has been carefully packed with special attention to quality. However, should
you find anything damaged or missing, please contact your sales representative in due time.
Standard accessories Optional accessories
1 x DE20-BT DTU 1 x Power adapter
(with AC cable)
1 x Bluetooth antenna
(round head)
1 x DC power connector
1 x LTE antenna
(flat head)
/ /
1 x DB9 male to 3.5mm
serial adapter cable / /
2 x Terminal connector / /
Actual accessories might vary slightly from the list above as the customer order might
differ from the standard configuration options.
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1.3 Specifications
DE20-BT
Communication
4G LTE
CAT M
Bluetooth
BT 5.0, BLE coded PHY supported
I/Os Serial port 1 x RS232/RS485 for data communication
1 x RS232 (Audio jack) for device configuration
System Control LED indicator
1 x 4G LTE status indicator
1 x Serial port status indicator
1 x Power indicator
1 x Error indicator
Button
1 x Restore button
Mechanical
Dimensions
100mm x 74mm x 34mm (Enclosure only)
Installation
Wall mounting
IP rating
IP30
Power Input 5V~36V
1 x Power terminal
Consumption
< 5W
Software
Configuration tool
VT Dtool
Multiple data centers
Supported
Network protocol
PPP, IP, TCP/UDP
Southbound protocol
Modbus
Northbound protocol
MQTT
Environment
Condition
Temperature Operating: -20℃~ +70℃
Storage: -40℃~ +85℃
Humidity
Operating: RH 5%-95% (Non-condensing)
EMC level
EMC Level 3
Certification
FCC, UL
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1.4.2 Front View
1.4.3 Back View
COM
Power
terminal
Audio jack
for conf.
Restore
button
SIM
card slot
LTE
antenna
Bluetooth
antenna
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1.5 Mechanical Dimensions
•100mm x 74mm x 34mm (Enclosure only)
1.6 Power Supply and Consumption
DE20-BT industrial DTU works with 5V-36V DC power input supplied by a DC power
terminal that is reinforced for reverse polarity protection. The power consumption of the
device is less than 5W.
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2.1 Setting up the Device
Before you proceed with the configuration of your DTU, follow the steps below to finish
hardware connection.
1. Position the device on a desired place, for instance, a wall or a desktop;
2. Use screws (M4 x 6 / M4 x 8 recommended) to fasten the device on the wall or desktop;
3. Further secure the device using another four screws that fit the small round holes if
needed;
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4. Insert an activated SIM card to the SIM slot with the gold-colored contacts facing up,
and push the SIM card until it clicks;
5. Install the antenna to the antenna connectors and tighten the connectors (round one
to the BT connector, flat one to the LTE connector);
6. Use a DB9 male to 3.5mm serial adapter cable to connect the audio jack of the device
to a host computer when you need to read the data collected or
upgrade/debug/configure the device (a USB to RS232 female adapter cable might be
needed);
The serial debug port DOES NOT support hot plug. Every time when you unplug the DB9
male to 3.5mm serial adapter cable from the DE20-BT or host computer, please restart
the DE20-BT before any further operations.
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7. Connect a field device (e.g., a PLC/sensor) to the RS232/485 serial port of the device for
data collection (see details in 3.1);
8. Connect the terminal end of the DC power connector to the power terminal of the
device and the round end to the male end of the power cable;
9. Plug the power adapter to a DC power outlet that meets the supply voltage
requirement (5V to 36V) to power on the device.
2.2 Connectors and LED Indicators
The device implements a 3-pin Phoenix terminal (RS232/RS485) for data collection.
Pinout description:
Pin Signal Description
1 RS232_TX/ RS485_A RS232 transmit data/RS485_A
2 RS232_RX/ RS485_B RS232 receive data /RS485_B
3 GND Ground
Pin 1
GND
PWR
HM_GND
If you are using the power connector supplied by Vantron
Red wire:
PWR
Black wire: GND
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There is a power terminal on the device. Please leave the HM_GND pin not connected when
powering on the device.
The LED indicators are silk screened as PWR, ERR, 4G and RS232/485.
The definition of the LED indicators is shown below.
LED Indicator Description
PWR Solid green: device powered on
ERR Solid red: device malfunction, hardware error, no SIM card, etc.
4G
Blinking yellow: the 4G network is working
Solid amber: SIM card inserted, wait for the card initializing
RS232/485
Light off
No data receiving or transmitting
RS232 mode
Solid yellow RS485 mode
Blinking red Data receiving
Blinking yellow Data transmitting
Blinking amber Serial port not functioning properly
GND
PWR
HM_GND
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