DSG Series

Brand new platform design with state of the art techniques for monitoring and controlling.

DSG Series

Datawatt Smart Grid

Flexible design | Maximum security

The Datawatt Smart Grid (DSG) series is designed for operation in the Water, Energy and Industrial markets. The design operates under two main principles: flexibility and maximum security. Flexible housing ensures the DSG design fits all existing Datawatt hardware platforms, as well as being optimised for future applications.

The DSG is developed on Linux, a modern open source platform, well known for its reliability, stability and security; this allows the platform to meet all modern technical and security requirements.

Features & Benefits At A Glance
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Flexible design

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Maximum security

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Designed for multiple applications

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LTE/4G Communication


For the Water, Energy and Industrial market, security requirements are very important. The interpretation of these requirements is subject to change, which is why we adhere to ENCS-RTU-DA security standards and ensure the development of the DSG-Series is based on "security by design".

Read the case Study

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Realtime IEC104, COAP, and Modbus protocols are implemented, with other protocols available on request. New protocol implementations can be easily created because of the use of Linux and C#.

PLC Programming

The PLC programs are made with the latest standard from Codesys based on IEC61131-3. This standard is the industrial protocol for control programs and used by many national and international organizations and companies.



Industrial grade modular remote terminal unit (RTU)


MCU base box with optional Modem and optional 1x I/O module. MCU can be extended with 8x I/O modules. Further I/O extensions possible via CAN bus with max. 14x ECU modules, each ECU can be composed with max. 8x I/O modules


ARM Cortex A9, 2 cores, 800 MHz


Real-time clock with optional lithium battery backup


4 GB eMMC NAND Flash, 512 MB DDR3 RAM, SD card (insertable)


2x16 characters display with background LED, 6 button keyboard

Communication Serial

1x RS232 (system port), 2x RS232 (auxiliary ports), 1x RS232/RS485/S0 (auxiliary port), 1x CAN bus. Optional up to 16x RS232/RS485 via external MOXA serial device server(s)

Communication IP

2x Ethernet (1/10/100). Optional modem (4G (LTE FDD Cat.4, 3GPP release 9 compliant, 5 bands) / 3G (2 bands) / 2G (2 bands)). SIM type: mini SIM (2FF)

Power Supply

DC powered, 20 – 30 VDC

Power Backup

Embedded 24VDC no break functionality, with charger, using 2 x 12 VDC batteries, with alarms


16DI module: 16x Active Digital Inputs 8DI module: 8x Galvanic Isolated Passive Digital Inputs 8DOR module: 8x Galvanic Isolated Digital Outputs 16AI module: 16x Passive Voltage (0-1 V) or Current (0/4-20 mA) Analog Inputs 8AI module: 8x Passive Isolated Voltage (0-1/10 V) or Current (0/4-20 mA) Analog Inputs 4AO module: 4x Active Current (0/4-20 mA) Analog Output MIXA module: 8x DI (see specs 16DI), 3x DO (see specs 8DOR), 4x AI (see specs 16AI)


Screw terminals for power, I/O, CAN. RJ-45 for communications. Modem antenna type: SMA Female 50 ohm, 1 mandatory, 1 optional (diversity)

Operating System

Linux kernel with additions developed/integrated by Datawatt


Internal Webserver, PC packages: RTU Manager, Codesys PLC (IEC61131-3)


IEC61131-3 (IL, LD, FBD, SFC, ST, CFC), Optional C# add-ons

Alarm Handling


Data Logging

Configurable: Time based (schedules), Event based (value change), Specific (PLC triggered)

SCADA Compatible

List available on request

Remote Upload

Configuration (Setup/Objects/PLC), Firmware updates

IT Features


Protocol Support

Modbus Master (RTU/ASCII/TCP) via serial/IP. Modbus Slave (RTU) via serial IEC60870-5-101/104 Slave, IEC60870-5-103 Master IEC61850 Slave IEC1107 List of other protocols available on request


IEC62443 (pending). ACL, several accounts for levels of authority, SSL, OpenVPN, IpSEC. Internal hardware settings: disable SD card, disable interrupting boot procedure. Root account can not be used remotely.


MCU box: 120 x 70 x 120 mm. ECU + I/O expansion: 120 x70 x (37 + N*37) mm, N is number of I/O modules


DIN rail EN50022 (DIN35)


-20°C to +65°C




Emission: EN61000-6-2, Immunity: EN61000-6-2, Safety: EN60950. FCC/IC, PTCRB/GCF, RCM, R&TTE/GCF
DSG Series Specification Sheet
Electricity in Case of Emergency DSG Case Study

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