berg - die Energieoptimierer

Data Loggers


BDL 50

Berg BDL 50 energy data loggers are designed for time-synchronous acquisition and intermediate storage of energy consumption information or measured values from M-Bus and Modbus/RTU measuring networks. As M-Bus or Modbus/RTU masters, they periodically retrieve meter readings, measured values, or load values from the media meters or sensors and pass them on to the Efficio energy data acquisition and analysis system.
Depending on the number of meters or sensors to be recorded, the data logger can temporarily store the measured values and time stamps for several weeks.

The BDL 50 is designed with a level converter for the connection of up to 50 M-Bus terminal devices (standard-compliant according to EN13757). Commissioning is carried out in a very simple and effective way via an assistant in the Efficio software. In the first step, the network parameters are imported into the data logger via a USB stick. In the second step, Efficio finds connected meters or sensors and offers the measuring points for data storage.


  • BDL 50 M-Bus/Modbus data logger for the Efficio energy management system
  • Internal level converter for 50 M-Bus standard loads
  • Ethernet interface for network connection
  • 16 GB microSD archive memory for logging measured values
  • Minute-by-minute polling of M-Bus or Modbus/RTU media meters (electricity, heat, water, compressed air, gas, etc.)
  • Compact design for top-hat rail mounting

Technical data

Designation BDL 50
Conformity CE 2006/95/EC Low Voltage Directive
2014/30/EU EMC Directive
Dimensions (W × H × D) in mm 106.3 × 62 × 76.5
Case material PC/ABS UL94-VO (self-extinguishing)
Mounting Profile rail 35 mm or wall mounting
Protection class IP 20
Potential isolation Fieldbus, process level
Temperature range 0…60˚C (operation)/–25…+70˚C (storage/transport)
Humidity RH1 (without condensation, relative humidity 10…95%)
Pollution Pollution degree 2
Vibration/shock 1 g, 9…150 Hz/15 g, 11 ms
Supply voltage 24 V DC (18…30 V DC perm. range) with reverse polarity protection
Current consumption (Max.) 200 mA
USB USB 2.0 (configuration data storage)
Ethernet 10/100 Mbps auto negotiation
COM1 RS485, 300…115,200 baud (Modbus RTU)
COM2 M-BUS configuration data storage, 300…19,200 baud, max. 50 loads
Archive data memory
16 GB microSD


  • BDL 50   Item number: 003386 Data logger for minute-by-minute or quarter-hourly accurate interrogation of
    M-Bus or Modbus/RTU media meters of e.g. electricity, water,
    heat meters and gas meters in a Modbus or M-Bus network
    Hour meter for installation and measurement time
    Operating conditions according to EN 61131-2
    Operating temperature: 0 … +50 °C, rel. humidity 10 … 95 % Universal Data Logger

The universal data logger has been designed for the acquisition of instantaneous meter readings and the readout of data memories from electricity meters. Thanks to the integrated synchronization function, it cyclically synchronizes the real-time clocks of Berg DCLi meters and thus creates the basis for standard-compliant meter reading recording according to PTB-A 50.7.
Up to 16 DCLi meters can be connected serially per for third-quantity delimitation. If required, an M-Bus level converter for up to eight DCMi M-Bus meters and a pulse acquisition module for up to four DCi S0 pulse meters can be integrated in the housing. generates virtual load profiles in 15-minute time intervals from the recorded meter readings of the DCMi or the pulse readings of the DCi electricity meters and stores them, together with the readings from the DCLi meters, in its long-term memory in CSV format.
The load profiles are transmitted at programmable time intervals by the universal data logger via network or mobile radio to an SFTP server or directly to the energy data management software Efficio in push mode and form the basis for continuous or standard-compliant recording of the connected consumption meters.
The consumption meter type, the format of the storage files, and their transmission is pre-parameterized via the Web server integrated in Skalar.Pro. For connecting to third-party meters, templates can optionally be created by the Berg service department.


  • Data logger for submetering and third-party quantity recording
  • Parameterizable via integrated Web GUI
  • Memory readout and time synchronization of 16 DCLi meters
  • Standard-compliant transmission of meter readings according to PTB-A 50.7
  • Acquisition of up to eight DCMi M-Bus and four DCi pulse meters
  • Converter for the creation of 15-minute load profiles in CSV format
  • 2 GB long-term archive memory for meter readings
  • Ethernet interface for network connection
  • LTE mobile radio module for decentralized data loggers
  • Surface-mounted housing with three-point mounting (top-hat rail adapter on request)

Technical data

Material Insulating case for terminal cover mounting according to DIN 43857
Fire protection UL94 V0
Dimensions (W × H × D) in mm 176 × 107 × 65
Operating and storage conditions  
Protection class IP 51 according to DIN EN 60529 (VDE 0470-1)
Pollution degree 2 according to DIN EN 60950-1
Storage temperature –40°C…+70°C
Operating temperature –25°C…+55°C
Rel. humidity range 10…95% (rel. humidity range)
Power supply  
Nominal voltage 100…230 V AC ±10% acc. to DIN EN 50160
Rated frequency 50 Hz ±15%
Power consumption
8.5 W
Overvoltage category III
Overvoltage resistance 4 kV
Power supply Connection terminals up to 4 mm² (rigid) or 2.5 mm² (flexible)
Inputs Optional via PRM44 module, four active inputs for S0 counters, 13 V (open circuit voltage), 12 mA (open circuit current), 1 kΩ (max. load), terminal connection 1.5 mm² (rigid and flexible), max. 3 m cable
Mobile radio SMA (female) antenna connector, mini-SIM card reader for 1.8 V and 3.0 V SIM cards for GPRS/EDGE 850/900/1800/1900 MHz and UMTS/HSPA+ 850/900/2100 MHz
Ethernet® Interfaces RJ45 (8P8C) 10BASE-T/100BASE-TX acc. to IEEE 802.3, auto crossover
Serial Interface RS485 half-duplex configurable via software Modbus RTU, 300…115,200 bps, max. 1,200 m cable length
(Optional) M-Bus DIN EN 13757-2 (DIN EN 1434)
M-Bus master for 8 standard loads, 300…4,800 bps


  • SKALAR.PRO ETHN   Item number: 004869 Data logger with network connection incl. additional software for quarter-hourly accurate interrogation of 16 DCLi electricity meters. Transmits time series in FTP/FTPs push mode.

  • SKALAR.PRO LTE   Item number: 004870 Data logger with LTE mobile radio incl. additional software for quarter-hourly accurate interrogation of 16 DCLi electricity meters. Transmits time series in FTP/FTPs push mode.

  • SKALAR.PRO ETHN MBus PRM44   Item number: 004874 Data logger with network connection incl. additional software for quarter-hourly accurate interrogation of 16 DCLi electricity meters, 8 M-Bus and 4 S0 pulse meters. Transmits time series in FTP/FTPs push mode.

  • SKALAR.PRO LTE MBus PRM44   Item number: 004875 Data logger with LTE mobile radio incl. additional software for quarter-hourly accurate interrogation of 16 DCLi electricity meters, 8 M-Bus and 4 S0 pulse meters. Transmits time series in FTP/FTPs push mode.

  • SKALAR.PRO II DIN RAIL   Item number: 005108 Communication device for SmartMetering and SmartGrid applications,
    power supply 24VDC, two Ethernet interfaces 10BaseT/100Base-TX
    for WAN and service operation, expansion interface for additional boards,
    two serial RS485 interfaces halfdublex, message input, relay output and
    power supply output 5V DC (not switchable),
    memory expansion 128 MB RAM, 256 MB Flash, 2GB eMMC.



LTE M-Bus Master

The LTE M-Bus Master energy data logger is designed to provide utilities, service companies, and heating network operators with a highly flexible and efficient system for automated remote meter reading. It reads and stores data from a maximum of 16 directly connectable M-BUS devices. Data transfer is automated via LTE in push mode without the intervention of any host software, thus enabling a very powerful remote data transmission solution for M-Bus. The variable remote data transmission formats allow the effective integration of meter data into a wide variety of system landscapes.


  • Direct connection, reading, and saving of meter data from 16 M-Bus meters
  • Integrated IR interface for cascading CMeX extender modules for connection of up to 256 M-Bus devices
  • Reading and storing of meter data from any meter with M-Bus protocol according to EN 13757-3
  • M-Bus data logger functionality with storage depth of up to 5,000 M-Bus meter data records
  • Remote data transmission (mobile 2G/3G/LTE) via email, FTP, HTTP, SMS
  • Sending of flexible data reports as well as user specific reports and status messages
  • Configurable via SMS, HTTP, and Telnet
  • Possibility of remote maintenance and firmware update via OTAP Java™ standard

Technical data

Frequency Quad-band GSM 850/900/1,800/1,900 MHz
GSM data Up to 14.4 bps, V.110, in non-transparent mode
GPRS data Class 12,  used up to Class 8
Email Via SMTP
FTP Standard FTP Client
HTTP Standard HTTP client, POST and GET
Transparent M-Bus Standard HTTP client, POST and GET
Transparent M-Bus Via static IP/TCP
Protection class IP 20
Dimensions (W × H × D) in mm 100 × 65 × 36
Weight 20 g
Mounting type DIN rail mounting
Power supply 100…240 VAC, 50/60 Hz
Power consumption <2.5 W max.
Operating temperature 5…55°C
Storage temperature 0…55°C
Ambient conditions In-house
M-Bus standard reference EN 13757-2 /-3. M-Bus decoder embedded
M-Bus baud rate 300 and 2,400 baud
Max. M-Bus counter 16 standard loads/extension by extender
Max. Cable length 1,000 m
M-Bus connection Plug-in terminal for solid conductors Ø 0.6…0.8 mm
Data memory 1.3 MB
Memory depth Max. 5,000 meter data records
Possible logger intervals 1, 5, 10, 15, 20, 30 min, 1 h, 12 h, day, week, month


  • CME 2100 LTE LOGGER   Item number: 004925 LTE M-Bus Master Data Logger for minutely or quarterly
    quarter-hourly interrogation of M-Bus meters or sensors.
    Number of M-Bus sensors: max. 16 standard loads a 1.5 mA
    Number of parameterizable M-Bus variables: max. 128
    Power supply: 100-240 VAC (+-10%), 50- 60 Hz


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