ADGT DTU2 Series User manual

GPRS/NB-IoT Data Loggers
DTU2xx
User Guide
Revision 2.1, November 2021

DTU2xx Data Logger Series
User Guide. r. 2.1 | 2021-11-10
Tel.: [phone] e-mail: [email protected]
DTU2xx Data Loggers
User Guide (revision 2.1, November 10th, 2021)
This user guide was developed for persons responsible for mounting, configuration and technical maintenance
of the DTU2xx data logger series (hereinafter referred to as DTU or Data Logger). The guide contains
information about the intended purpose, design, technical parameters and operating principles of the DTU.
ADGT systems reserves the right, without any prior notice, to make changes to the operating manual related
to the improvements in hardware and software, as well as to eliminating misprints and inaccuracies.
Safety Instructions
CE WARNING: In a residential environment this product may cause radio interference. In such
cases users may be required to take adequate measures.
WARNINGS!
Do not dispose electronic equipment as unsorted municipal waste. Please use a separate
collection facility or contact the supplier from which this instrument was purchased.
Do not disassemble the device unless you are qualified as service personnel.
AC Input voltage:100-240VAC, 230VAC, 50Hz
Connect the protective grounding conductor of the AC power cord to an earth ground, to avoid
electrical shock.
The equipment should not be serviced when powered up. Make sure to power down the
equipment before performing service activities.
Do not use or install this product near water to avoid fire or shock hazard.
Avoid exposing the equipment to rain or damp areas.
ADGT systems s.r.o
Planichkova, 442/3,
162 00, Prague 6, Prague, Czech Republic
The present document is the property of ADGT systems s.r.o.
Printing is authorized exclusively for private usage.

DTU2xx Data Logger Series
User Guide. r. 2.1 | 2021-11-10
Tel.: [phone] e-mail: [email protected]
Content
Safety Instructions................................................................................................................................................2
1. Product Overview..............................................................................................................................................4
Product Description....................................................................................................................................................... 4
Technical Specifications................................................................................................................................................ 6
Appearance....................................................................................................................................................................... 8
DTU2xx Interfaces and Wiring Diagrams.............................................................................................................10
Universal GPIOs....................................................................................................................................................10
RS-232 and RS-485 Interfaces ........................................................................................................................13
DTU2xx Operating Modes.........................................................................................................................................15
LED Indication................................................................................................................................................................16
Collection and storage of information .................................................................................................................17
Algorithm of data logger communication..........................................................................................................17
SIM card operation ......................................................................................................................................................17
Operating in NB-IoT network...................................................................................................................................17
Backup battery power supply ..................................................................................................................................18
2. Getting Started................................................................................................................................................ 19
Important safety information...................................................................................................................................19
Installing DTU data logger ........................................................................................................................................19
3. Configuring data logger via PC ..................................................................................................................23
Connecting DTU to PC via USB................................................................................................................................23
DTU Configuring Tool Overview..............................................................................................................................24
Configuring System and Network Setting ..........................................................................................................26
Configuring Inputs.......................................................................................................................................................28
Configuring Serial Interfaces....................................................................................................................................30
Configuring Schedule .................................................................................................................................................32
Configuring SMS Notifications................................................................................................................................34
Configuring Power Consumption Mode When Switching Power to Battery .........................................35
Reboot and Reset .........................................................................................................................................................37
Firmware Update ..........................................................................................................................................................37
Application 1.........................................................................................................................................................39

DTU2xx Data Logger Series
User Guide. r. 2.1 | 2021-11-10
Tel.: [phone] e-mail: [email protected]
1. Product Overview
Product Description
DTU2xx – a series of battery-powered data loggers
designed for remote metering and monitoring.
Device provides:
Automated data collection from meters with
pulse outputs, meters with serial RS-232 and
RS-485 ports and a wide range of sensors
(resistive, 4-20mA, 1-wire, etc);
Data storage in non-volatile memory;
Wireless data transmission to dispatching
server over GPRS or LTE NB-IoT network.
Data logger is made in an IP30 metal case and equipped with four configurable GPIOs, dual SIM
slots, serial RS-232 and RS-485 ports, and USB port for device configuring.
Devices are powered either from a 230V AC or from a 7-30V DC network (depending on model),
and also have a built-in replaceable 3500 mAh battery to provide backup autonomous operation of
the data logger in the event of external power failure. Battery service life ranges from 4 to 10 years
depending on the model (GPRS or NB-IoT) and its use.
The model range of DTU2xx is represented by the following base models:
Model
Network Type
Transmission Protocol
Power Supply
DTU217
GPRS
TCP
7-30 VDC
DTU217-C*
GPRS
TCP
100-240 VAC
DTU227
LTE NB-IoT
TCP
7-30 VDC
DTU227-U*
LTE NB-IoT
UDP
7-30 VDC
DTU227-C*
LTE NB-IoT
TCP
100-240 VAC
DTU227-UC*
LTE NB-IoT
UDP
100-240 VAC
* Base model options:
-U –UDP protocol. A base software option for all DTU2xx NB-IoT models, which means that the device operates
over the UDP protocol. Otherwise, if there is no ‘-U’ marking, that means that the device operates over TCP protocol.
-C –a built-in 100-240 VAC power supply unit. A base hardware option for all DTU2xx data logger models. Other-
wise, if there is no ‘-C’ marking for these models, that means that the device has 7-30 VDC power supply.
Fig. 1. DTU2xx data logger.
DTU217, DTU227, DTU227-U
7-30 VDC power supply
DTU217-C, DTU227-U, DTU227-UC
100-240 VAC power supply
Fig. 2. DTU2xx base models.

DTU2xx Data Logger Series
User Guide. r. 2.1 | 2021-11-10
Tel.: [phone] e-mail: [email protected]
DTU2xx base models can be supplied with the set of additional options, which include the following groups:
Hardware Options - minor hardware changes to the device:
-G – RS-485 galvanic isolation
Assembly Options – include replacement or absence of the battery, case and/or type of mounting:
.Z – no battery
.M – no case (for DTU with 7-30 VDC power supply only)
.R – metal DIN rail mounting
.T – wall mounting
The base model in combination with the additional
options constitute a modification of the device and
indicate the difference between a specific modification
and the base model.
Options are added to the name of the base model in
the following sequence:
Base
Model
–
hyphen
Hardware
options
.
dot
Assembly
options (battery,
case, mounting)
Example of a modification name – DTU227-UCG.ZR
Within each group of options, the letters go
alphabetically. If the letters of the option group are not
present in the modification name, then the letter of the
next option group takes its place. If no option is
specified, then we have the base model (see the table
above).
DTU2xx Features
Data transmission according to the schedule, at pressing the button and on the event at
the object.
Date and time regular automatic synchronization.
Dual SIM for communication channel reservation.
Battery discharge monitoring. If the battery is low, a notification will be sent to the server.
Several outputs with a voltage of 3.6V, 5V, 7.5V and 12V for powering external sensors.
Quick and easy device configuration: via PC as well as remotely using web interface.
Application Areas
AMR/AMI Smart Metering Systems (heat, electricity, water, gas)
Automated Control Systems (temperature, leakage, pressure, 1-Wire, current loop)
Power and Energy Industry
Fig. 3. DTU2xx model code designation.

DTU2xx Data Logger Series
User Guide. r. 2.1 | 2021-11-10
Tel.: [phone] e-mail: [email protected]
Technical Specifications
DTU217
DTU217-C
DTU227
DTU227-U
DTU227-C
DTU227-UC
POWER SUPPLY
Main power supply
source
7-30VDC
100-240VAC/
50Hz
7-30VDC
7-30VDC
100-240VAC/
50Hz
100-240VAC/
50Hz
Max. power consumption
3W1
3W1
1W1
1W1
1W1
1W1
Connector
2-pin terminal block, pitch – 5.08 mm
Backup power supply
source
Li-SOCL2 A-type battery, 3.6V 3200 mAh
Current consumption in
a sleep mode (when
powered by battery)
10 µA (at 2 Hz polling rate), 40 µA (at 20 Hz polling rate),
150 µA (at 100 Hz polling rate)2
Current consumption in
data transfer mode
(when powered by
battery)
150 mA2
36 mA2
36 mA2
Battery life
Not less than four years3
Up to ten years3
CELLULAR NETWORK PARAMETERS
Module frequency range
GSM 850/900/1800/1900
LTE B1/B3/B5/B8/B20/B28 (multiband)
Output power
33dBm (850/900 MHz)
30dBm (1800/1900 MHz)
23dBm±2dB
Data transmission
technology
GPRS class: configured
8/10/auto (up to 12)
NB-IoT Cat NB2
Data transmission rate
up to 85.6 kbps (DL/UL)
125 kbps(DL ) / 150 kbps(UL)
Protocol Stacks
IPv4 TCP
IPv4 TCP
IPv4 UDP
IPv4 TCP
IPv4 UDP
GPIO PARAMETERS
Universal (pulse) inputs
x4 (IO1-IO4)
Connector type
Terminal block, pitch - 3.81mm
Unit of measured value
pulse, ohms, mA, °C, ppm
Pulse counting range
0 - 232
Sensor type
pulse counter, high-frequency pulse counter, signal input, leakage sensor, temperature
sensor, NAMUR, 1-Wire, 4-20 mA current loop, CO2 sensor,
load control, engine hours counter, opening sensor
Polling frequency4
2Hz (default): min. pulse duration – 500ms, max. pulse frequency at the input – 1Hz;
20Hz: min. pulse duration – 50ms, max. pulse frequency at the input – 10Hz;
100Hz: min. pulse duration – 10ms, max. pulse frequency at the input – 50Hz
Relative acceptable pulse
counting error limit
±0,01%
Input condition
Closed, Open, Short circuit, Break
1
Without taking into account the load at the 12V and 7.5V power outputs.
2
If all inputs are configured as counting and the 12V and 7.5V power outputs are turned off.
3
In the operating mode envisaging 3 communication sessions per month.
4
ATTENTION! Increasing the loop polling frequency results in a shorter accumulator battery life.

DTU2xx Data Logger Series
User Guide. r. 2.1 | 2021-11-10
Tel.: [phone] e-mail: [email protected]
DTU217
DTU217-C
DTU227
DTU227-U
DTU227-C
DTU227-UC
Input resistance
measurement range
0 – 100 kOhm
The line is working properly: open state -3-100 kOhm, closed state - 1-3 kOhm
The line is faulty: line is broken - more than 10kOhm, short circuit - 0-1kOhm
OTHER PORTS & CONNECTORS
Serial Ports
1 x RS-232: non-isolated, Rx, Tx, G signals. Default speed -19200 bps (8N1)
1 x RS-485: non-isolated, A, B signals. Default speed - 19200 bps (8N1).
Load capacity – up to 32 unit load (UL) devices (up to 256 1/8 load devices).
1/2UL = 24kOm. Maximum communication range - up to 1000 m
Power outputs
2 x 3.6V (ENABLED by default)
1 x 5V (DISABLED by default). Enabled when the 1-Wire input is activated ("DS18B20”)
1 x 7.5V (DISABLED by default). Enabled when the "Current loop" input is activated.
1 x 12V (DISABLED by default). Enabled when the "Current loop" input is activated.
SIM
2 x mini-SIM (2FF)
Antenna
1 x SMA-F connector
DEFAULT SETTINGS
Data slice saving
once per hour
Readings transfer to
server
once/day, from 08.00 to 09.00
IOT24.eu server
IP address/server port5
iot24.eu:10002 (GSM)
139.162.147.141:10003 (NB-IoT)
Server connection
on schedule, pressing configuration button (SB),
event at facility (short circuit, break), reboot
Time synchronization
Each connection to server
GENERAL CHARACTERISTICS
Overall dimensions
97 x 88 x 36 mm
Weight
no more than 220 g
Enclosure
aluminum, protection class - IP30
Archive depth
10 years (hourly logging)
Time accuracy
5 sec/day
Average service life
10 years
OPERATING CONDITIONS
Operating temperature
-10...+50°C 6
Relative air humidity
up to 80% at 25°C
Atmospheric pressure
84-106. 7 kPa
5
For devices with a GPRS modem, use a domain name to connect to the server.
For devices with an NB-IoT modem, use only the IP address.
6
When operating from battery at temperatures below 0°C, the battery life could be shorter.

DTU2xx Data Logger Series
User Guide. r. 2.1 | 2021-11-10
Tel.: [phone] e-mail: [email protected]
Appearance
DTU2xx is a single-board microcontroller device in a metal case with the possibility of mounting on
a DIN rail or on a wall. A description of the buttons and connectors is given below.
Table. 1. DTU2xx buttons and connectors.
Connector
Description
Front side
1
USB
mini-USB B connector for configuring data logger via PC
2
BAT
Power battery switch (default - OFF position)
3
SB
Button for connecting to the server/configuring data logger
4-1
SIM 1
SIM card 1 holder
4-2
Button to remove SIM card 1
5-1
SIM 2
SIM card 2 holder
5-2
Button to remove SIM card 2
6
ANT
SMA-F connector for connecting GSM (NB-IoT) antenna
7
LED indicators (ST1, ST2, ST3)
Rear side
8
XP17
connector
RS-485
A
A+ signal, RS-485 line
B
B- signal, RS-485 line
T
Built-in terminal resistor output (in order to commute terminal resistor,
T-output should be connected to the B- output of RS-485 port)
9
XP27
connector
RS-232
G
Ground
TX
RS-232 interface TX data output
RX
RS-232 interface RX data input
7
Mating part is a 3-pin terminal block with a screw clip (pitch - 3.81 mm).
Fig. 4 DTU2xx connectors and buttons.

DTU2xx Data Logger Series
User Guide. r. 2.1 | 2021-11-10
Tel.: [phone] e-mail: [email protected]
Connector
Description
10
XP38
connector
GPIO
G
Ground
IO1
Universal counting/signal Input/Output 1
IO2
Universal counting/signal Input/Output 2
IO3
Universal counting/signal Input/Output 3
IO4
Universal counting/signal Input/Output 4
11
XP48
connector
PW-OUT
G
Ground
3.6V
3.6 V power output
3.6V
3.6 V power output
12
XP58
connector
5V
5 V power output
7.5V
7.5 V power output
12V
12 V power output
13-1
XP69
connector
7-30 VDC
DTU217,
DTU227
G
Ground
V
7-30 VDC power supply input
13-2
XP69
connector
~230 VAC
DTU217-C,
DTU227-C
N
Neutral input of power supply voltage 100-240 VAC
L
Line input of power supply voltage 100-240 VAC
14
Data logger grounding screw
8
Mating part is a 3-pin terminal block with a screw clip (pitch - 3.81 mm).
9
Mating part is a 2-pin terminal block with a screw clip (pitch - 5.08 mm).

DTU2xx Data Logger Series
User Guide. r. 2.1 | 2021-11-10
Tel.: [phone] e-mail: [email protected]
DTU2xx Interfaces and Wiring Diagrams
Universal GPIOs
The data logger has four independent GPIO inputs-outputs (IO1-IO4), that support the connection of a
wide range of meters and sensors. The inputs can be programmatically configured via the web interface
of https://iot24.eu Cloud server or using the DTU Configuration Tool software.
1. Input types for connecting meters
Depending on the meter to be connected, when setting up the data logger, it is possible to select the
following input types:
Counting - the type of input used when connecting pulse meters with a relay output to DTU,
as well as meters with a NAMUR standard output to control the loop integrity. The inputs are
configured to connect meters with a pulse repetition rate at the outputs of up to 100Hz.
High-frequency meter (or HF pulse meter) - the type of input used when connecting high-
frequency impulse meters to the data logger.
Connection. An example of a possible connection of meters to the data logger is given in figure below.
One wire of the meter is connected to one of the inputs IO1 – IO4. The other wire is connected to the
3.6V - 3.6V low current output. The polarity of the wires is not taken into account when connecting.
Up to four meters can be connected to one data logger on one rail.
After connecting the meters, each input must be configured via the https://iot24.eu web interface or
in the DTU Configuration Tool software. When configuring, you must select the type of input (Pulse
meter or HF pulse meter) and set the threshold resistance values at the input.
Depending on the type of meter, the data logger will record 2 or 4 states at the inputs:
closed and open - if the meters are not equipped with a NAMUR circuit.
closed, open, short circuit (SC), open circuit - if the meters have a NAMUR output.
ATTENTION!
When you select the type of input HF impulse meter, you do not need to set the threshold resistance
value, it will be adjusted automatically.
Fig. 5. Connecting meters to DTU2xx.