F 101


F101 is a feeder level remote terminal unit used extensively for a wide variety of SCADA applications in power,transportation, water, etc. It is capable of monitoring both digital and analog data, communicating with and controlling remote systems. The firmware of F-101 interfaces with the main control centre using various communication protocols compliant with IEC 60870-5-101/104, MODBUS, DNP3 and SPORT. F-101 is also compliant with IEC 61850, IEC 60870-5-103 and acts as a gateway for various IEDs. It is a non-proprietary, open architecture system with high in-built security and is designed and developed to work in tropical environment.

Acquires analog values from MFT’s, Energy Meters or from IED’s.

Internal battery backup to hold data in SOE buffer memory.

Number of communication ports can be incremented by addition of cards.

Supports different communication data exchange rates (bits per second) and scanning cycle on each port and different database for each master station.

CPU Module

  • CPU: 32 bit ARM Core CPU operating @ minimum 450 MHz
  • Flash 128 MB
  • Ethernet: RJ-45 10/100M
  • RTC: Real Time Clock, SOE buffer with battery back up

Rugged Design

  • Designed to work in the harsh industrial
  • environment
  • High noise immunity
  • Low power consumption
  • Industrial grade motherboard

Communication Protocol

  • IEC
  • DNP3

Cost Effective

  • Embedded real-time Linux
  • Local and remote configuration
  • Highly scalable to address the present and future needs

Scalable I/O's and Modular Construction

  • Allows the user to upgrade the system from a small configuration to the maximum limit merely by adding suitable input/output modules

  • I/O Cards:
  • Analog Channels in multiples of 8/16 (optional: expandable)
  • Digital Inputs in multiples of 16/32 (optional: expandable)
  • Digital Outputs in multiples of 8/16 (optional: expandable)

Power Supply

  • Input: 24/48V DC
  • Range: +20% to -15%
  • Output: +5V DC+24V for external add-ons


  • Operating temperature : -5°C to +55°C
  • Humidity : up to 95% RH (non-condensing)

Key Features

  • Supports IEC 60870-5-103/101/104, IEC 61850, and DNP3 protocols.
  • Remote database downloading of RTU from master station/SCADA/DMS control centre.
  • Internal battery backup to hold data in SOE buffer memory.
  • Communication with two master stations simultaneously.
  • Can act as a Data Concentrator Unit (DCU).
  • Acquires data from the IEC 60870-5-101/104 and MODBUS Devices.
  • Communication media support Modem (Dial up / Leased line / RF), GSM / GPRS, CDMA, 3G, PLCC, Fiber optic / VSAT and LAN.
  • FRTU is configurable using web based configuration and maintenance tool.
  • Possible to increase the number of communication ports by addition of cards.
  • Data transmission rates from 300 to 19200 bps for serial ports and 10/100 Mbps for TCP/IP Ethernet ports.
  • Supports scanning cycle on each port and a different database for each master station.
  • Can acquire analog values from multi-function transducers, energy meters or from IEDs.
  • GPS time synchronization (optional) and standard in-built auto diagnostics.
  • Single point and Double point status inputs to read device status.
  • Can acquire Unipolar/Bipolar analog inputs on different signal ranges.
  • Can accept analog input current signals from 0 to 20mA / 4 to 20mA/-10mA to +10mA and voltages from 0 to 5V single ended or -10V to +10V differential.
  • 12/16 bit ADC resolution with Analog Accuracy 0.2% of full scale.
  • RS 485 Communication Ports to acquire data from MFT's using MODBUS Protocol.