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RTU Contents
Summary of Specificationsا
CPU Card
Digital Input Module
Digital Output Module
Analog Input Module


The RGU control system family is a universal, modular information system for network operations management. RGU can be flexibly adapted to the requirement profiles of all network layers. This system attribute is enabled by open system architecture. The basis of this system architecture is a mainly uniform hardware platform and software modules, which can be used simultaneously on different system levels. Thus the node and station level e.g. is based on similar hard-ware. The required functionality results from setting the relevant parameters of the software modules. Powerful and open interfaces facilitate the integration of further functions, which can also be user-specific. 
RGU300 can be employed in the following areas:

  • Electrical energy networks
  • Water pipelines
  • Gas pipelines
  • Remote heating networks
  • Oil Pipelines

Based on a modular multi-CPU concept, RGU300 is designed for extremely high communication and data processing capability. Maintaining the proven I/O board family of MN2000, it fulfills the requirements for high end Remote Gateway Units:

  •  Modular hardware and software configuration
  • Compact construction
  • Low number of board types
  • Up to 4 communication interfaces to CCs
  • Up to 32 communication interfaces to sub-devices
  • Up to 480 data points per RGU300 subrack
  • Support of various communication protocols
  • Scalable performance
  • State-of-the-art configuration toolkit based on MS-Excel
  • Web Server based access to configuration data and application program files (Option)
  • Web Server based process and system diagnosis (Option)
  • Programmable logic control function according to IEC 61131-3 (option)

RGU300 communication capabilities are shown in principle in Figure 1.

Figure 1: RGU300 communication capabilities in principle.


Each hardware board is described in detail in the hardware data sheet. Board settings and wiring principles are explained in the unit and application descriptions.

All RGU300hardware boards are based on the European standard card format (200 x 320 mm). The following tables list the board types that are available to configure a RGU300remote terminal unit.

RGU300 is a powerful RTU designed for process monitoring and control systems. Its modular structure leads to flexibility and so simply sizing to fit any field requirement from very small to very large scale processes. It supports various IO types provided by various field device types including dry and wet contacts, current and voltage transducers and so on. Dexonic GRTU designed to work with both the two industrial standard dc voltages 24 V and 48 V.

Its powerful CPU card provide various communication facilities including five RS-232 ports, one 10/100 Mbps Ethernet port and two USB ports which provide great Communication capabilities.

General structure of RGU300 consists of one or more base module(s) connecting together by means of an additional CPU card that acts as data concentrator and/or protocol convertor and/or communication server (Figure 1).

In addition to traditional 24/48 V and 4-20 mA representation of IO information, RGU300 can connect to remote IO systems using an appropriate serial connection like Modbus.

RGU300 can be easily arranged to provide distributed structure reducing huge amount of cabling in processes distributed over wide spread areas.

A 300 MHz 32 bit x86 compatible processor gives RGU300CPU card enough power to provide four communication channels to more than one control and monitoring centers and remote IOs while processing local IO cards.

An RS-232 local operation and maintenance port provide standard ASCII protocol which can be connected to any standard terminal software to view internal data acquired by IO cards, set system parameters, view protocol frames and many other useful information.

The well known serial communication controller Z85C30 (SCC) allows supporting virtually any communication protocol either synchronous or asynchronous (currently IEC , DNP3, Indactic 2033 and HDLC protocols supported).

Two mechanical sizes are available: 6-unit and 3-unit in a standard 19" sub rack. 3-unit size is economic for processes with few number of points.

Summary of Specifications

CPU Card

  1. 32bit x86 processor core running at 300 MHz
  2. 16K I-Cache, 16K D-Cache
  3. Watchdog timer
  4. 2MB nonvolatile memory for program , configuration data and log files
  5. 128MB RAM
  6. Four asynchronous RS-232 serial ports
  7. 10/100 Mbps Ethernet port
  8. USB Port
  9. Real Time Clock with Lithium battery backup
  10. 8bit IO bus with 8bit address(256 registers addressable) in 15 IO cards on P2 connector
  11. 6U standard Eurocard size
  12. DC Supply through standard VME bus connector (P1 connector)
  13. RT Kernel OS
  14. Local HMI (Optional)
  15. Support IEC60870-5-101,103,104 Master/Slave
  16. Support Modbus RTU/TCP
  17. Support TASE.2 and IEC61850

Digital Input Module

  1.  24V and 48V wetting supplies
  2. 32 digital inputs
  3. Software configuration of single and double points
  4. 1ms Timetag of events
  5. CP56 full timetag information (Year, Month, …, miliseconds)
  6. Galvanic isolation above 1KV
  7. Surge Protection
  8. Memory for at least 1000 events
  9. 6U standard Eurocard size
  10. Intelligent denounce filtering
  11. Programmable Chattering Filter
  12. Pulse Counter up to 25 Hz

Digital Output Module

  1. 24V and 48V wetting supplies
  2. 44 digital outputs act as 22 Trip/Close points
  3. Software configuration of output pulse duration
  4. Select before execute and direct commands
  5. Galvanic isolation above 1KV
  6. Surge Protection
  7. 6U standard Eurocard size

Analog Input Module

  1. 12bits resolution (11 bits value plus sign)
  2. 16 differential analog inputs
  3. Software configuration of scales
  4. Software configuration of deadbands
  5. Accuracy is better than 1% of full scale ±1bit
  6. Galvanic isolation above 500V
  7. Surge Protection
  8. 6U standard Eurocard size