Intelligent data concentrator

DMDC 1.2

User Manual Version 1.3 (2014-03-14)

UAB NAVITUS LT, Lithuania 2018

DMDC

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UAB NAVITUS LT 2

This user guide is an automated electricity meters reading module‘s DMDC 1.2 manual. Read this document, before starting to set up and run the controller. The manufacturer does not provide any warranty for controllers, who were corrupted or damaged, due to ignoring the requirements written in this guide and meter‘s passport, or violating the safety instruction’s requirements.

The manufacturer keeps the right to change the information given in this document at its own discretion

without giving a warning. It is forbidden to duplicate, copy, hand over or publicize this document, or its part,

without a written UAB NAVITUS LT authorization.

Document‘s and controller‘s software version history Document

version

Date Changes, comments Notes

1.0 2012-10-20 First edition DRAFT

1.1 2013-11-21 Updated parameterization section DRAFT

1.2 2013-12-06 Updated whole document First official release

1.3 2014-03-14 Updated security, diagnostic, statistic descriptions

Hereby, UAB NAVITUS LT, declares that concentrator DMDC 1.2 is in compliance with the essential

requirements and other relevant provisions of:

• R&TTE Directive 1999/5/EC

• Low Voltage Directive 2006/95/EB

• EMC Directive 2004/108/EB

`

This sign indicates, that this product cannot be thrown out with any other waste, when its validity period

is over if this sign is on the product or it is included in product’s description. In order to prohibit possible

harm for environment and human health because of uncontrolled waste elimination, please separate

this product from other forms of waste, and if it is possible use this product or is parts repeatedly in

recycling process. Home users can contact product manufacturer or local administration for information

about product utilization and recycling without any harm to the environment. Enterprises must contact

their own providers to revise product’s validity terms and conditions stated in purchase agreements.

This product cannot be thrown out with any other waste of different purpose.

DMDC

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UAB NAVITUS LT 3

TABLE OF CONTENTS

1. SAFETY INSTRUCTIONS ....................................................................................................................................................................... 5

2. PRODUCT DESCRIPTION ...................................................................................................................................................................... 6

2.1. Hardware Modifications ................................................................................................................................................................... 6

2.2. Purpose of the data concentrator ...................................................................................................................................................... 7

2.3. Concentrator features ....................................................................................................................................................................... 7

2.4. Technical specifications ................................................................................................................................................................... 8

2.5. Construction and operation principle ............................................................................................................................................... 9

2.5.1. Block diagram ............................................................................................................................................................................. 9

2.5.2. Processor and memory ................................................................................................................................................................ 9

2.5.3. GSM/GPRS/3G(/4G) Modem ..................................................................................................................................................... 9

2.5.4. PLC Modem ................................................................................................................................................................................ 9

2.5.4.1. DCSK Modification (L1x) ................................................................................................................................................. 9

2.5.4.2. PRIME Modification (L2x) ............................................................................................................................................. 10

2.5.5. Real Time clock ........................................................................................................................................................................ 10

2.6. LED Status indication description .................................................................................................................................................. 10

2.6.1. Ethernet indicators ..................................................................................................................................................................... 11

2.7. Interface connection description..................................................................................................................................................... 11

2.7.1. Mains network connection ........................................................................................................................................................ 13

2.7.2. Ethernet Port .............................................................................................................................................................................. 14

2.7.3. GSM/GPRS/3G(/4G) Modem And Antenna ............................................................................................................................. 14

2.7.4. USB Device Port ....................................................................................................................................................................... 14

2.7.5. USB Host Port ........................................................................................................................................................................... 14

2.7.5.1. Requirements for external GPRS/3G/4G USB modem ................................................................................................... 14

2.7.5.2. Requirements for external USB Ethernet converters ....................................................................................................... 14

2.7.6. RS485 / RS232 Port .................................................................................................................................................................. 15

2.7.7. Digital Inputs ............................................................................................................................................................................. 15

2.7.8. Digital Output ............................................................................................................................................................................ 15

2.7.9. Backup Battery .......................................................................................................................................................................... 15

2.8. Connectors ..................................................................................................................................................................................... 15

2.9. Purpose of connector interfaces ..................................................................................................................................................... 16

3. Concentrator management, parameterization and diagnostic ................................................................................................................... 17

3.1. Data concentrator configuration ..................................................................................................................................................... 17

3.1.1. Configuration login and password ............................................................................................................................................. 17

3.1.2. Reset to factory defaults ............................................................................................................................................................ 17

3.1.3. Data concentrator system parameters configuration .................................................................................................................. 17

3.1.4. Data concentrator operation parameters configuration .............................................................................................................. 18

3.1.5. DMDC clock synchronization and parameterization ................................................................................................................. 18

3.1.6. Data concentrator update ........................................................................................................................................................... 18

3.2. Concentrator diagnostic.................................................................................................................................................................. 18

4. Meters data readout and parameterization................................................................................................................................................ 19

4.1. Meter access process ...................................................................................................................................................................... 19

4.2. Meter parameterization .................................................................................................................................................................. 19

4.3. Meter data readout .......................................................................................................................................................................... 20

4.3.1. Meter time synchronization ....................................................................................................................................................... 20

4.3.2. Meter availability check ............................................................................................................................................................ 20

5. Data privacy and security ......................................................................................................................................................................... 21

5.1. Data security by LAN .................................................................................................................................................................... 21

5.2. Data security by WAN ................................................................................................................................................................... 21

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UAB NAVITUS LT 4

5.3. Data protection ............................................................................................................................................................................... 21

5.4. Antivirus, malware protection ........................................................................................................................................................ 21

5.5. Security event log ........................................................................................................................................................................... 21

5.6. Security alerts ................................................................................................................................................................................. 22

5.7. Commissioning process.................................................................................................................................................................. 22

6. MANUFACTURER WARRANTY ......................................................................................................................................................... 23

6.1. Contact details ................................................................................................................................................................................ 23

7. ACRONYMS ........................................................................................................................................................................................... 24

DMDC

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UAB NAVITUS LT 5

1. SAFETY INSTRUCTIONS

Only the authorized service persons with adequate qualifications can perform installation,

uninstallation and parameterization of the concentrator DMDC 1.2. National wiring rules

should be followed while installing and using the controller.

All equipment interconnected with this product should comply with the requirements of EN

60950-1:2006 (Personal computer, etc.) or other adequate safety standard applicable to

the equipment (electricity meters).

Read the installation instructions before you connect the concentrator to the power

source.

Concentrator DMDC 1.2 should be mounted in restricted access locations only. It should

only be available for the service persons to access this location.

Do not open the device enclosure except if described in this document. There are no

serviceable components inside. Some parts may remain energized even if the power is

disconnected!

Always disconnect the mains supply while installing or servicing the communication

interfaces.

DMDC

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UAB NAVITUS LT 6

2. PRODUCT DESCRIPTION

2.1.Hardware Modifications

Table 2.1. Hardware modifications list

LX X. WX X. BX. CX X X.

Example: L1 0. W1 2. B0. C2 0 0.

L - Meters interfaces (LAN)

-PLC technology

Not present 0

DCSK modulation (Yitran Y-net) 1

OFDM modulation (PRIME) 2

-Reserved (Wireless technology)

<reserved> 0

W - WAN interfaces

-Ethernet

10/100BaseT 1

-Internal modem

Not present 0

GSM/GPRS/EDGE/UMTS/HSPA(+) (3.75G) modem 2

GSM/GPRS/HSPA+ (3.75G)/LTE (4G) modem 3

B - Backup power supplies

-External 12V battery connection

Not present 0

Present 1

C - I/O, additional interfaces

-Additional serial communication interface

Not present 0

RS232 1

RS485 2

RS485 RJ45 4

-Digital Inputs

Not present 0

4 channels 1

-Digital outputs

Not present 0

Solid state relay output 1

DMDC

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2.2.Purpose of the data concentrator

Intelligent data concentrator DMDC 1.2 is used in the smart energy resources (electricity, water, gas)

metering systems. PLC (Power Line Communication) concentrator acts as a gateway between MDCS (Meter

Data Collection System) and metering devices, it collects and stores metering data and statistics.

PLC DCSK Modulation (Yitran Y-Net technology) or OFDM Modulation PRIME (PoweRline Intelligent

Metering Evolution) technology and DLMS COSEM (IEC 62056) protocol is being used while reading the data

from the meters.

Data concentrator runs OpenMeter (http://www.openmeter.com/) based web service for MDCS

communication with data concentrator.

Figure 2.1. DMDC 1.2 controller usage

2.3.Concentrator features

Two way communication with meters:

o PLC data transfer – three phase or one phase installation

o OFDM (PRIME Standard) or DCSK PLC modulation

o Up to 300 metering devices

Communication with MDCS

o Ethernet

o GPRS/3G

o GPRS/3G/4G

Automatic meters registration (Plug&Play)

Periodically performs a meter status check (meter reachability). Check interval is configurable.

Collects communication statistic/diagnostic information

Runs automatic scheduled tasks and stores the data to an internal database or transfers it to MDCS

Reports alarms and errors from meters to MDCS

Supports meter data reading from meter on demand

Supports meters parameterization function

Transfers control commands and messages from MDCS to the meters

DMDC runs scheduled clock synchronization from NTP services

Performs an automatic meter clock synchronization

Discrete I/O (may be used for the electrical cabinet security function)

In case of a power loss, may still function from an external backup battery and transfer the alarm and

data to MDCS (it depends on modification)

Supports automatic and full remote concentrator firmware (image) update

DMDC

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2.4.Technical specifications

Table 2.2. Concentrator technical specifications

Power/Coupling

Reference voltage, Un Three phase 3x230/400 V or One phase 230 V: L1 – PLC coupling + power supply L2 – PLC coupling L3 – PLC coupling

Voltage range 0.8 – 1.15 Un

Reference frequency 50 Hz

Power consumption <10 W total (<30 VA /per phase)

Average approx. 5 W

Please refer to device passport for exact value

Power line communication

PLC modulation DCSK / OFDM (PRIME) - according to modification

Operating frequency CENELEC-CA3 band

Protocol

Meter reading protocol DLMS COSEM

Ethernet

Ethernet Interface 10/100 BaseT, RJ45

GSM/GPRS/EDGE/UMTS/HSPA(+) (3.75G) modem (Wx2 modification)

GSM/GPRS bands 850/900/1800/1900 MHz

GPRS & EDGE Class 12

UMTS/HSPA bands 900/2100 MHz

UMTS/HSPA data speed 7,2 Mb/s downlink 5,76 Mb/s uplink

Antenna Connector type SMA

GSM/GPRS/EDGE/HSPA+ (3.75G)/LTE (4G) modem (Wx3 modification)

GSM/GPRS bands 900, 1800 MHz

GPRS & EDGE Class 12

UMTS/HSPA bands 900, 2100 MHz

UMTS/HSPA data speed 42 Mb/s downlink 5.76 Mb/s uplink

LTE Bands 20 (800MHz), 3 (1800MHz), 7 (2600MHz)

LTE data speed 100 Mb/s downlink 50 Mb/s uplink

Antenna Connector type SMA

Additional interfaces

Serial interface RS485/RS232

Serial interface Isolation Yes, 4000 V RMS, 1 minute

USB Device for configuration

USB Host auxiliary

Digital inputs (Cx1x modification only) 4 channels, dry contact

Digital inputs Isolation Yes, 4000 V RMS, 1 minute

Digital output (Cxx1 modification only) 1 channel, 120 mA 250 VAC

Digital output Isolation Yes, 4000 V RMS, 1 minute

Backup power supply (B1 modification only)

Connection to external backup battery 12 V, 3,5..7 Ah lead-acid battery

Operating time using external battery 72 h (with 7 Ah battery)

Real Time clock

RTC accuracy < 0,5 s/d (-15 °C to 60 °C)

Data Storage

Meters data storage capacity 512 MB

Data retention time 5 years min.

Environmental

Operational temperature -30 °C to 60 °C

Storage temperature -40 °C to 70 °C

Ambient humidity ≤95%

Standard compatibility

ESD test, LST EN61000-4-2 ±8 kV, criterion B

Burst test, LST EN61000-4-4 (power supply port) ±4 kV, 50 Ω output

DMDC

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UAB NAVITUS LT 9

Surge test, LST EN61000-4-5 6 kV, 1,2/50 μs, 50 Ω output

Enclosure

Enclosure Plastic, IP20 (EN 60529)

Mounting DIN rail

Dimensions (Length x Width x Height) 213x98x62 mm

Weight ≤500 g

2.5.Construction and operation principle

2.5.1. Block diagram

Concentrator block diagram below

WEB-Services Client

Meters data readout and maintenance application

WEB-Services Server

DLMSClientTCP/IPNTP

GSM/GPRS/HSPA/3G/4G

(LTE) Modem

Ethernet DI DO SerialPLC

PRIME / DCSK Modem

DLMS Server

PLCPRIME / DCSK

Modem

IP network

Data gathering and aggregation center

DMDC 1.2 Inteligent Data Concentrator

ARM9 CPU Running Linux

Smart Meter

DLMS Protocolconnection

Web-Serviceconnection

Database

PRIME / Y-Net (DCSK) PLC Connection

Figure 2.2. Concentrator block diagram

The main hardware components of the concentrator is ARM9 processor, PLC modem and PLC coupling

circuit, GSM/GPRS/3G(/4G) modem, peripheral interfaces (Ethernet, Serial, DI, DO), real time clock, power

supply unit.

Internal concentrator software includes Linux 2.6.xx Operating System, Metering Engine, Database,

DLMS client, PRIME data Concentrator engine (L20 Modification only), NTP client, WebService interface and

other concentrator service processes.

2.5.2. Processor and memory

DMDC 1.2 concentrator has 396 MHz clock speed ARM9 processor. Concentrator has 128 MB SDRAM

dynamic memory and 512 MB of NAND flash read only memory. Linux 2.6.xx operating system runs on this

hardware.

Database is stored on the 1GB Industrial μSD memory card. This memory card is also used for the

firmware update image download. Configuration parameters and meters date retention time is at least 5 years.

2.5.3. GSM/GPRS/3G(/4G) Modem

The concentrator can have GSM/GPRS/3G(/4G) modem (Wx2 or Wx3 modification), for communication

with the MDCS support.

DMDC automatically performs registration to cellular network after DMDC power on.

DMDC system performs periodical connection check (period is configurable parameter) to external host,

it’s called External loop connection check. In case there is no connection with external host DMDC performs

modem restart and reconnection to the cellular network procedures.

External host can be DHCP servers or other external sources list (this is configurable as well) which

support ICMP (Ping) protocol. List can be provided for check reliability.

2.5.4. PLC Modem

2.5.4.1. DCSK Modification (L1x)

L1x modification has installed Yitran IT700 PLC modem (base station). PLC connection is maintained

through all three power line phases. The signal is distributed / summarized to/from the phases using passive

(capacitive) coupling network.

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Main modem features:

reliable communication over low-voltage network;

uses patented wide frequency DCSK modulation technology to transmit data;

supports „mesh“ and „tree“ architecture network with up to 8 retransmission levels.

2.5.4.2. PRIME Modification (L2x)

L2x modification has installed PRIME PLC modem (base station). PLC connection is maintained through

all three power line phases. The signal is distributed / summarized to/from the phases using passive (capacitive)

coupling network.

Main modem features:

reliable communication over low-voltage network;

uses OFDM (PIRME) modulation technology to transmit data.

2.5.5. Real Time clock

The concentrator has a high accuracy, temperature compensated RTC. RTC is supplied from CR2032

primary lithium battery that can be changed. Battery life time – 10 years.

2.6.LED Status indication description

Figure 2.3. DMDC 1.2 indicators

Table 2.3. DMDC 1.2 indicator meanings

LED No.

Indicator Indication color / timing

Meaning Indication available on modification

Section "DC"

1 "System Status" Green Indicates the system CPU activity All

2 "Battery Charge" Yellow External 12V battery charging indication. This LED is active when the external battery is charging. It is inactive when the battery is not present or full-charged.

B1

3 "Power ON" or "AC/Bat"

Green Red

AC Voltage indication (L1). This LED is active when supply voltage on L1 phase is present. Supply from external battery indication. This LED is active when no supply voltage on L1 phase is present and Data Concentrator is supplied from battery.

All B1

Section "PLC"

4 "Meter Online" Green Meter Registration status: The LED is lid if at least one Meter is registered to the concentrator.

All

5 "Meter Communication"

Green Indication of Meter data reading session. LED lights on open session with the meter.

All

DMDC

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UAB NAVITUS LT 11

2.6.1. Ethernet indicators

Figure 2.4. Ethernet indicators

(1) Yellow LED is turned on when "live" Ethernet cable is plugged into the Module. The LED shortly blinks

whenever an Ethernet packet is received.

Check your cable, Ethernet switch or other Ethernet equipment if this LED does not turn on when you

connect the Ethernet cable.

(2) Green LED is turned on when controller links with the hub at 100Mb. The LED is off when the link is

established at 10Mb.

2.7.Interface connection description

DMDC 1.2 can have up to five terminal blocks (depends on modification). Please refer to the device

passport for the terminal signal meanings.

Possible terminal blocks and their meanings are showed in figure 2.5 and table 2.1.

6 “PLC Tx/Rx” Green Red

PLC interface RX indication. This LED is active when data is received via PLC interface. PLC interface activity indication. This LED is active when data is transmitted or received via PLC interface PLC interface TX indication. This LED is active when data is transmitted via PLC interface.

L1x. (DCSK modulation) only L2x. (OFDM modulation) only L1x. (DCSK modulation) only

Section "WAN"

6 "Online" Green Connection with MDCS status: The LED is lid if data readout from the Data Concentrator to MDCS is active or was performed within configured time (one hour by default).

All

7 "Communication" Green Indication of active MDCS communication session. LED light on message send and correct message received.

All

8 "ETH Link/Act" Green Ethernet interface Link activity indication. This LED is active when a valid link is detected and blinks when activity is detected.

All

9 "GPRS Status" Green - 0,1s pulse every 2s Green - 2x 0,1s (double) pulse every 2s Green (steady ON)

GPRS/3G(/4G) modem registered, Home Network GPRS/3G(/4G) modem registered, Roaming GPRS/3G(/4G) data session

Wx2. (with GSM/GPRS/3G or GSM/GPRS/3G/4G modem) only

10 "GPRS Signal Strength"

Red Blue Green

GPRS/3G(/4G) Signal quality Low ( < -81dBm ) GPRS/3G(/4G) Signal quality Medium ( ≥-81dBm; < -69dBm ) GPRS/3G(/4G) Signal quality High ( ≥ -69dBm )

Wx2. (with GSM/GPRS/3G or GSM/GPRS/3G/4G modem) only

DMDC

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Figure 2.5. DMDC 1.2 connection pins, RS232/RS485 with terminal block

Figure 2.6. DMDC 1.2 connection pins, RS485 with RJ45 connector

Table 2.4. DMDC 1.2 terminal block pins

Connection type Pin number

1 2 3 4 1 2 1 2 1 2 3 4 5 1 2 3 4 5

Power supply

3x230/400 V Neutral Line 1 Line 2 Line 3

Battery

12 V - +

X1:

Solid state relay SW1 SW2

X2:

Digital inputs D11 D12 D13 D14

GND DI

X3:

RS232/RS485 RTS CTS TX/A* RX/B*

GND RS

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2.7.1. Mains network connection

The concentrator can be connected to one or three phase mains network, which nominal voltage is

3x230/400 V or 230 V. Concentrator power should be connected using short (up to 10 meters) cable from the

house power inlet or power busbar. Each additional device (circuit breaker, meter, unreliable connection, and so

on) attenuates PLC communication signal. Only one mounted close to the concentrator circuit breaker

(automatic switch) is required.

Connection scheme is illustrated in Figure 2.7 and Figure 2.8.

Please read DMDC 1.2 installation guide before mounting the concentrator.

Always disconnect the mains supply while installing or servicing the data concentrator.

Figure 2.7. DMDC 1.2 connection to three phase mains network

Figure 2.8. DMDC 1.2 connection to one phase mains network *

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UAB NAVITUS LT 14

* Connection to one phase mains network: for PRIME PLC (L2x… modification) please connect all three

DMDC 1.2 phase terminals (L1, L2, L3) to the Mains (L) as shown on figure 2.7 by dashed line, for better PLC

signal injection. For Yitran PLC (L1x… modification) it is enough to connect L1 phase terminal, but all three

phase terminals connection (L1, L2, and L3) is also possible.

2.7.2. Ethernet Port

10/100 Mbps (10/100 BaseT) port is used for connection to IPv4 via Ethernet network, for the data

transmission to the MCDS. For the interface parameters configuration, please refer to section 3.

2.7.3. GSM/GPRS/3G(/4G) Modem And Antenna

GSM/GPRS/3G(/4G) wireless modem used for connection to IPv4 via wireless GSM/GPRS/3G(/4G)

network.

50Ω SMA connector is used for GSM/GPRS/3G(/4G) antenna connection. The antenna must be

compatible with GSM/GPRS/3G(4G) modem frequencies (see section 2.4).

2.7.4. USB Device Port

The Concentrator has a USB Device (USB type B connector) port for PC connection for configuration and

service of the concentrator. This port supports USB Full Speed (12 MBit/s) mode.

Programmatically USB port works in Ethernet (RNDIS Gadget driver) mode. Supported versions of Operating

system:

Windows XP (additional USBnet driver required, for more: http://www.webos-

internals.org/wiki/USBnet_Setup), Windows 7, Windows 8 (driver integrated with system), Linux (additional

USBnet driver may be required).

For more information, refer to section 2.9. When connected to a computer data concentrator will have

192.168.200.200 IP address.

2.7.5. USB Host Port

The concentrator has an available USB Host (USB type A socket) port. USB Host can be used for data

flash sticks to copy data, firmware updates and so on.

USB host can also be used to connect external (GPRS/3G/4G) modems and USB Ethernet converters.

Compatible converters (listed in 2.7.5.1 and 2.7.5.2 sections) are connected automatically after have been

plugged to the USB Host. In case data concentrator has been power on, plugged in converter are connected to

the data concentrator.

2.7.5.1. Requirements for external GPRS/3G/4G USB modem

GPRS/3G/4G USB modems must conform to the Universal Serial Bus Communication Device Class

Abstract Control Model (USB CDC ACM) specification.

Some supported GPRS/3G/4G USB modems:

KYOCERA AH-K3001V

BT On-Air USB MODEM

Zoom Telephonics Model 3095F USB MODEM

2.7.5.2. Requirements for external USB Ethernet converters

USB Ethernet converters must be on ASIX AX8817X based USB 2.0 Ethernet Devices

A readily accessible voltage disconnect and protective device (circuit breaker) shall be

incorporated in the concentrator installation wiring (as shown in figures 2.6 / 2.7).

Requirements to circuit breaker:

• It should be rated to 6 A current and adequate voltage (3x230/400VAC or 230 VAC)

• It shall have a contact separation of at least 3 mm;

• It must be mounted close to the concentrator and easily reached to the operator;

• It must be marked, as the concentrator‘s switch-off device;

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Some supported USB Ethernet converters:

Linksys USB200M

Netgear FA120

Link DUB-E100

Hawking UF200, TrendNet TU2-ET100

2.7.6. RS485 / RS232 Port

The concentrator may have a galvanically isolated RS485 or RS232 serial port (X3) for external device

connection. Connector signals are described in Section 2.7(Figure 2.5).

This port can be used for balance-meter connection to the DC. This meter can be accessed transparently

from MDMS. DC opens listening port (port can be set see 3 section) for this purpose and all packets received to

this port redirects to the RS485/RS232 and vice versa.

2.7.7. Digital Inputs

Digital inputs can be used for various purposes like motion, fire, and doors detectors/sensors. Every time

state on DI changes systems logs it to the event log (see section 5.5) and event alerts can be send if they are

subscribed by OpenMeter Web Service interface (see section 5.6).

2.7.8. Digital Output

Digital Output can be used for various purposes like control relays and so on. Output functionality logic

has to be implemented on demand.

2.7.9. Backup Battery

Backup battery is dedicated to run DC in case the mains power supply is broken. Under normal conditions

DC operates from mains power supply and charges backup battery. In case the mains power supply is broken,

DC switches to backup mode.

There can be two backup operations modes. First DC runs while backup battery exhausted (if mains

power supply not restored yet) and then switches it’s self-off. Second scenario, DC switches to backup mode,

sends message about the mains power supply outage (security alert) and then switches it’s self-off.

When main power supply restores, DC will run as usual.

2.8.Connectors

Data concentrator connectors provided in Table 2.5 and Figure 2.9.

Table 2.5. Interfaces connectors types

No Interface Connector

1. Power/PLC Terminal block

2. BAT Terminal connector plug

3. X1, Relay Terminal connector plug

4. X2, Digital IN Terminal connector plug

5. X3, RS232/RS485 Terminal connector plug/RJ45

6. USB Host USB Type-A socket

7. USB Device USB Type-B socket

8. ETH, Ethernet RJ45

9. ANT, GPRS/3G(/4G) 50Ω SMA

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Figure 2.9. Data concentrator connectors (connector X3 is of C1 or C2 modification)

2.9.Purpose of connector interfaces

Data concentrator interfaces and supported protocols are provided in Table 2.6.

Table 2.6. Interfaces description and protocols

No Interface Description Protocols Security algorithms, protocols

1. Power/PLC Power supply, PLC signal injection (LAN)

OFDM Modulation PRIME (transport), DLMS/COSEM (IEC 62056) (Data)

DLMS/COSEM (IEC 62056) public, low level security, high level security

2. BAT External battery connector charge, backup power source

- -

3. X1, Relay External general purpose digital outputs

- -

4. X2, Digital IN External general purpose digital inputs

- -

5. X3, RS232/RS485 For balance-meter connection, data readout, parameterization

DLMS/COSEM (IEC 62056), Parameterization/Management interface

SSH (Parameterization / Management), Meter communication (DLMS/COSEM (IEC 62056) public, low level security, high level security)

6. USB Host Universal Service Bus Host

See Section 2.7.5 It depends on application

7. USB Device Local communication interface

IPv4(transport), OpenMeter, Parameterization/Management interface

HTTPS (OpenMeter), SSH (Parameterization / Management)

8. ETH, Ethernet Local Ethernet interface (WAN)

IPv4(transport), OpenMeter, Parameterization/Management interface

HTTPS (OpenMeter), SSH (Parameterization / Management)

9. ANT, GPRS/3G(/4G) Wireless communication modem (WAN)

IPv4(transport), OpenMeter, Parameterization/Management interface

HTTPS (OpenMeter), SSH (Parameterization / Management)

In Table 2.6 in Security algorithms, protocols column provided secure communication methods / protocols

/ algorithms. Recommended security levels for each communication channel/interface:

data readout OpenMeter WebService – HTTPS;

DC parameterization / management – SSH with strong password;

communication with meter (like PLC physical layer or serial port) - DLMS/COSEM (IEC 62056)

high level security.

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3. Concentrator management, parameterization and diagnostic

3.1.Data concentrator configuration

DMDC 1.2 can be configured through USB / RS485 interfaces locally, Ethernet and GPRS/3G/4G

interfaces remotely as well.

Data concentrator has parameterization login and password. Parameterization login for security sake will

be blocked for 24 hours after configured amount (see Table 3.1) of unsuccessful retries to login in to DC’s

configuration login.

After successful login all DC parameters can be changed system and operation parameters as well (see

3.1.2).

Configuration can be made remotely or locally by any software which supports DC parameterization

interface.

3.1.1. Configuration login and password

After login in to the configuration mode, password can be changed or revoked. Every password change or

unsuccessful change will be logged to event log (see section 5.5). The system calculates passwords hashes

and saves only them. To restore strong password’s from hash to plain text password practically impossible.

3.1.2. Reset to factory defaults

To reset to factory defaults is needed to login to parameterization login. Run reset to factory defaults

command. After reset to factory defaults command run it will be asked “Do you really want to reset DC to factory

defaults?” after it to choose Yes, there second warning appears “All configured parameters will be lost. Are you

really wanted to reset DC to factory defaults?” After Yes was chosen, factory defaults will be restored and

applied to DC. If in any step was chosen No, reset to factory defaults operation will be cancel.

3.1.3. Data concentrator system parameters configuration

System parameters list.

Table 3.1. System parameters list

GPRS/3G/4G

APN Access Point Name

PIN code SIM card pin code (if applicable)

Mode Modes GRPS only, HSPA only, HSPA prior GPRS

External loop IP list External IP address for periodic connection check (can be configured IP and/or NTP servers list)

External loop NTP server list NTP server list for periodic connection check (can be configured IP and/or NTP servers list)

LAN

External loop IP External IP address for periodic connection check

USE_IF_DHCP Use the IP even if DHCP is enabled

LAN with auto IP

DHCP on (default)

LAN with static IP

DHCP off

Static IP Static IP address

netmask Network mask

network

gateway Gateway IP address

broadcast

NTP

NTP server NTP server address for DMDC clock time synchronization

Other

Parameter Description Default value

Configuration login attempts Configuration logins attempts before block 5

Login lock time Login lock time after it was blocked 24h

DMDC

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3.1.4. Data concentrator operation parameters configuration

Operation parameters impacts data collection, communication with meter, meter time synchronization,

data management in database, scheduled task management. Parameters listed in table below.

Table 3.2. Operation parameters list

Parameter name Description

DlmsTimeout Wait answer from meter timeout

DlmsDelay DLMS packet timeout

SchedulerTaskExpiresAfterDays Period how long schedule task valid in the tasks queue. If task won’t be executed during this period it will be deleted

MetersDataValidForDays How long to save meter data in database

MeterTimeSyncPeriodInDays How often to check meters time

MinMeterTimeErrorToAdjust_ms Minimal time skew to synchronize meter time

MaxAllowedTimeSkewValue_s Maximal allowed meter time skew. If it will be exceeded, data collection from meter will be suspended

IsAllowedToSetMetersTime Is it allowed to set meter’s time in case if meter time skew too big to adjust or adjust limit in the meter was reached. Set meter time operation meter will delete all historical data from the meters memory

RS485/RS232 port forward Port forward for redirection packets(messages) to/from RS485/RS232 port

MinPeriodForMetersOnlineCheckInMinutes Minimum period for meters online check in minutes

MinPeriodForMetersOfflineCheckInMinutes Minimum period for meters offline check in minutes

3.1.5. DMDC clock synchronization and parameterization

DMDC runs scheduled clock synchronization from NTP services. Clock synchronization period may be

changed. DMDC clock can be set by the DMDC parameterization interface also.

3.1.6. Data concentrator update

Data concentrator supports drivers (of GSM/GPRS/3G(/4G) modem, Ethernet, PLC modem and etc.), DC

application (DC meters data collection, parameterization, maintenance service) remote update separately or

firmware (whole image of DC) remote update as well.

DC updates it’s self automatically, but update can be initiated manually as well.

DC at configured time connects to (S)FTP server every day and checks for updates. In case DC finds new

updates downloads it, decrypts, checks integrity, authorizes of these updates and if everything is fine runs

update procedure.

This routine can be made manually. Any who can connect to configuration account, can run this

procedure.

And one more scenario where (S)FTP server not needed. Images can be placed to the DC to the

preconfigured place and then run update manually. This scenario is useful for local updates.

Data concentrator update can be initiated by any software that supports DC configuration interface.

3.2.Concentrator diagnostic

Data concentrator collects diagnostic parameters to diagnose, prevent problems in the PLC network and

many other layers.

Data concentrator has diagnostic counters. System diagnostic, meters data collection diagnostic, meters

online duration diagnostic, meters communication quality diagnostic counters (Figure 3.1). These counters are

saved at every diagnostic period end and can be read for analysis.

All diagnostic and statistical information are processed and saved with internal clock date stamps.

This diagnostic feature gives information about current and historical system as whole status. Based on

this information can be diagnosed and localized problems as in the DC system and in the PLC system as well.

Diagnostic and statistical parameters can be read remotely by any software which supports DC

parameterization interface.

DMDC

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Meter No. x

Meter state (Online/Offline) rate

PLC level communication parameters

Communication quality parameters

Meters data readout rate

Protocol level communication parameters

LAN (Local Area Network)

Available/No Connection with BS (Base Station)

Mesh Network topology

System

Microprocessor load rate

RAM state

Active/Not active processes counters

System Uptime

System clock status

Used/Free flash space

WAN (Wide Are Network)

Available/No Connection to GSM network

GSM/GPRS/3G/4G connection technology

NTP Server available/No

FTP Server available/No

Communication with MDCS

Available/No Connection with MDCS

Queries count per diagnostic period

Answers count per diagnostic period

Connection signal strength

Diagnostic counters

Statistic counters

Events count per diagnostic period

App layer

App quantitative parameters

App qualitative

Figure 3.1. Data concentrator diagnostic parameters

4. Meters data readout and parameterization

The main purpose of Data concentrator is to collect data from meters and pass them to MDCS. DC

communicates and collects meters data through LAN (Local Area Network in this case PLC) and pass this data

to MDCS through WAN (Wide Area Network in this case Ethernet, GPRS/3G/4G). DC have possibility to read

data and through local connection for example USB Device.

In general WAN and local connections have the same possibilities. WAN and local connections only

physical connection infrastructure. DC supports meters parameterization and data readout through them all.

Data concentrator runs OpenMeter Web Service interface for meters access.

4.1.Meter access process

Meter access process is responsible for meters data readout and parameterization tasks. It continuously

checks Tasks Queue and process tasks from the queue.

4.2.Meter parameterization

Meter parameterization is supported by OpenMeter Web Service interface. Meter parameterization can be

performed by any Device or PC that runs software which support OpenMeter Web Service client interface. PLC

meter parameterization can be performed by any software which support OpenMeter Web Service interface like

GamaLinkNet.

DMDC

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4.3.Meter data readout

Meter readout tasks are placed to the Tasks Queue. Tasks comes from the OpenMeter interface from the

MDCS (it called on demand tasks) and Schedule process generator. Meter access process takes tasks from the

queue and processes readout routine. Readout routine consist of connect to the meter, open the session,

execute readout tasks and close the session.

4.3.1. Meter time synchronization

DC runs many processes one of them is meter time synchronization process. Process periodically goes

through meters list and checks when last time meter time was synchronized. If it was earlier than configured

time (see Table 3.2), process takes care to check meter’s time and performs meter time synchronization if it is

needed.

Meter’s time always are checked every time meter becomes online.

4.3.2. Meter availability check

DC runs meter availability check process. Every meter have last time online date counter. Every time after

success readout this counter are set to current time. If there is no any readout during configured minimum meter

online check period (see Table 3.2) meter availability check process trays to make connection with the meter. If

connection was succeeded process updates online date counter, in other case meter’s status becomes offline.

In the configuration period for check meters for online and offline meters can be configured separately

(see Table 3.2). Recommendation offline meters check more often. It takes possibility to connect meters more

quickly. System becomes more reactive.

DMDC

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5. Data privacy and security

5.1.Data security by LAN

Data concentrator supports all DLMS/COSEM security levels public, low level security and high level

security. Security level depends on meter security layer. Data concentrator to connect to meter has had

appropriate keys.

Meters keys management is available by OpenMeter interface through SecurityTransferDescriptor in

ConcentratorAccess object.

5.2.Data security by WAN

Data concentrator have HTTPS tunnel via all interfaces that support OpenMeter and/or

Parameterization/Management interface (See 2.9 section). SSL certificates used for HTTPS can be managed

via concentrator’s management and configuration interface.

5.3.Data protection

All data, meters keys stored in database are encrypted. All objects are serialized and encrypted by AES-

128 algorithm and only then stored to the database.

5.4. Antivirus, malware protection

All interfaces data readout, concentrator management and configuration (see section 2.9) are secured

(HTTPS, SSH) and accounts protected by passwords. It prevents from sniffing (tapping) plaintext as well.

Mentioned interfaces are function based and not provide any possibilities copy, add, remove any external

content than can be infected with viruses and/or malware code.

5.5.Security event log

Data concentrator logs most significant events. It includes:

failed authorization or authentication, failed tries to login to configuration account;

requests or commands received;

firmware updates/upgrades;

high number of malformed or unexpected messages and errors;

digital inputs state changes (it can be used for doors detectors, cover tampers and etc.);

main power loss;

removal of battery;

incorrect protocol from MDCS and events, packets in LAN (PLC);

change of clock time, time zone changes;

malformed/unauthenticated communications MDCS and DC;

malformed/unauthenticated communications between meter and DC.

Every log can be enabled/disabled by the configuration interface and software that supports configuration

interface as well.

Event log entry format:

EventSource: Name [string]

EventSource: Ident [string]

EventIdent [string]

EventLevel [short]

EventDateTime [DateTime]

EventDetail [string]

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5.6.Security alerts

Data concentrator security log can be read via OpenMeter Web Service interface.

Security alerts can be subscribed via OpenMeter Web Service Subscriptions. Web Services Subscriptions

are according to the WS-Eventing specification and allows subscribing to events that are emitted by resources.

Events can be emitted from ConcentratorAccess resources when services activations update resources or when

EventLog entries are added.

Security alerts can be subscribed on EventLog object on ConcentratorAccess Resource [D3.2_v2.0.pdf, §

6.4.5.1.3, page 112].

5.7.Commissioning process

Data concentrator has default account and password. It’s highly recommended to change password

before to take DC the mounting location.

Concentrator management, configuration account name is “admin” and default password “admin”. If

Purchaser provides his own high secure password, manufacturer it makes as default during manufacturing

process.

SSL certificates (for HTTPS) can be provided by the Purchaser as well to place to the provided data

concentrators.

DMDC

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6. MANUFACTURER WARRANTY

UAB NAVITUS LT (further manufacturer) guarantees, that materials and components used in the

controllers production, assembly and adjustment, are free from defects and that staff performed their duties

qualitatively.

Technical characteristics are also guaranteed. Manufacturer guarantees, that produced controllers and

other devices of same use, will remain the stored data in its memory when power is plugged off and plugged in

again. All the gathered data in meters will remain unchanged and it will be possible to receive and analyze it

again.

Controller warranty service time – 24 months. Warranty is valid if the user has followed the rules set out

below:

controllers installation was performed by manufacturer or his authorized representative, or manufacturer

provided a written permission to a legal person, supplying him with all the needed technical

documentation for the controller’s installation;

electricity network and other independent connection lines were not cut off or shorten between the

controller and meters;

when changing the meters in the system, their parameterization or positioning, it is important to inform

the system manufacturer and get its written agreement and necessary software updates-changes (when

changing the meters in the system);

stamps and stickers of the controller box are unaffected.

Manufacturer provides software, firmware updates including available security updates, functionality

optimizations, bug fixes, patches including in software/firmware used third party solutions. Updates support time

is as agreed, standard support term 60 month.

6.1.Contact details

If you are experiencing difficulties setting up or operating our product and you have not managed to find

the needed information in this document, please contact us by email - support@navitus.lt.

Manufacturer:

UAB NAVITUS LT Visorių str. 2, LT-08300 Vilnius, Lithuania Telephone: +370 5 232 80 00 Fax: +370 5 210 12 92 Information on technical issues: support@navitus.lt; Sales, other information: info@navitus.lt. www.navitus.lt

DMDC

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7. ACRONYMS

AMI Advanced Metering Infrastructure

COSEM COmpanion Specification for Energy Metering

DC Data Concentrator in most cases DMDC 1.2.

DCSK Differential Code Shift Keying

DLMS Device Language Message specification

FTP File Transfer Protocol

GPRS General Packet Radio Service

GSM Global System for Mobile communications

HSPA High Speed Packet Access

HTTP Hypertext Transfer Protocol

HTTPS Hypertext Transfer Protocol Secure

LED Light - Emitting Diode

LTE Long Term Evolution (commonly marketed as 4G LTE)

MDCS Meter Data Collection System

NTP Network Time Protocol

OFDM Optical Frequency Division Multiplexing

OpenMeter Open Meter CI2-SI1 web service interface from Specification of OPEN meter OSI

layers and multi-metering

networking interfaces Version 2.0.

http://www.openmeter.com/files/deliverables/D3.2_v2.0.pdf

PC Personal Computer

PLC Power Line Communication

PRIME PoweRline Intelligent Metering Evolution

RMS Root Mean Square

RTC Real Time Clock

SFTP SSH File Transfer Protocol

SIM Subscriber Identification Module

SSH Secure Shell

TCP/IP Transmission Control Protocol / Internet Protocol

UMTS Universal Mobile Telecommunications System

USB Universal Serial Bus