Remote Terminal Unit (RTU)

Setting up a NovaTech OrionLX or LXm Automation Platform to act as a Substation Remote Terminal Unit is straightforward. Orion connects to substation meters, event recorders, distributed I/O, protective relays and other substation IEDs using any combination of RS232, RS485, Fiber or Ethernet connections and over 30 available IED protocols. NovaTech Configuration Director Software, or NCD, is used to select any combination of analog, discrete or counter data using preconfigured pick lists for these attached IEDs. SCADA data accessed by Orion is presented to one or more SCADA masters, engineering groups, web or mobile clients using nearly any SCADA protocol. Controls, settings, and resets are passed through the OrionLX to substation IEDs, and on to substation devices. An OrionLX with the Direct Video option connects to a local touchscreen HMI and keyboard to allow for local access and control. No PC is required.

Software for this Application

Accumulator Freeze

Enables the OrionLX to process freeze commands from the master, or to autogenerate freeze commands. Includes logging and reset functions.

Time Management

Enables the OrionLX to accept any common time protocol – IRIG-B, DNP3 or NTP – to synchronize its clock and time-stamp events. Also enables the OrionLX to send out IRIG-B, DNP3, NTP or SEL® ASCII to attached IEDs. Includes the NKI Time Interface Module that reports clock accuracy and synchronization status.


Enables the user to create an alternate name for any point in the OrionLX database. Supports load of Alias spreadsheet to reduce typing.

Data Scaling

Enables the range of data values originating from IEDs (e.g. -32768 to 32767) to be scaled into a different range for SCADA (e.g. 0 to 4096), Math and Logic, Alarming, etc.

Pseudo Master

Supports the “mailbox” application, where one Master can write data into the OrionLX database using one protocol and another Master can read these data from the OrionLX database using a different protocol. An example would be a SCADA system writing generation settings using DNP3 and a plant DCS reading these data using Modbus.


Includes points to “sense” OrionLX operating conditions, including internal temperature, power supply health, firewall status, alarm status, modem status, and user login status. These points can be mapped to SCADA, Email, Alarm-Archive, Math and Logic or other applications.

Cascaded OrionLXs Master

Simplifies the integration of multiple OrionLXs in large substations. Makes multiple OrionLXs appear as a single system. This module is for the Master Orion.

Cascaded Orions Slave

Simplifies the integration of multiple OrionLXs in large substations. Makes multiple OrionLXs appear as a single system. This module is for the Slave Orion (up to 10 Slaves).

Points Blocking

Enables points or groups of points to be manually “blocked” from reporting state changes. Useful during commissioning and maintenance.

Protocols for this Application

Large Library or SCADA and IED (Master) Protocols

Legacy SCADA Protocol (Conitel, CDC, L&G, etc)

OrionLX Hardware Features for this Application

RS-232 Non-Isolated Card

RS-232 port for shorter runs, inside panels, etc. For use with SEL® relays. Can send out IRIG-B and provide power out pin #1.

RS-485 / RS-422 Card

Bxx (xx=quantity) RS-422/485 port, two–wire or four–wire.

ST Serial Fiber Card

Multimode fiber port pair (TX/RX) with ST connectors.

Bit-Byte Conversion CardRS-232 Isolated Card

Internal bit-to-byte converter card with RJ-11 port (only for bit protocols CDC I, CDC II, Conitel and REDAC 70-H).

RS-232 Isolated Card

Same functionality as type A except greater electrical isolation (for use in longer runs).

HDLC Interface Card

Specialty HDLC hardware interface for Turtle metering systems.

RS-485 w/IRIG-B Card

One RS-485 port, two-wire, and one twisted pair for IRIB-B connections to DxIO module.

V-pin Fiber Card

One multimode fiber port pair (TX/RX), and a third fiber port for IRIG-B distribution to DxIO module. All V-pin connectors.

OrionLXm Hardware Features for this Application

Four RS-232 / RS-485 serial ports

Ports #1 through #4, DB9 connector, RS-232 or RS-485 two-wire or four-wire. Can send out IRIG-B on unused pins. Can provide power out pin #1.

Four RS-232 / RS-485 serial ports

Ports #5 through #8, DB9 connector, RS-232 or RS-485 two-wire or four-wire. Can send out IRIG-B on unused pins. Can provide power out pin #1.

Dual Ethernet Ports

Two Copper Ethernet TCP/IP 10BaseT/100BaseTX, independent NICs

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  • NovaTech Orion I/O  

    NovaTech Orion I/O™ is an extension of the family of OrionLX™ Automation Platforms for substation automation and incorporates the same security features, software tools and “NCD” configuration as the OrionLX. It is a rack-mountable I/O assembly with four slots—A, B, C, and D—that can be filled with any combination of I/O cards: currently 16-Point Discrete Input Card,

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  • Additional Datasheets, Application Notes, Customer Success Stories and other documents in our documentation library

    January 23, 2018 – January 25, 2018 San Antonio, Texas

    DistribuTECH 2018 – Booth #2135

    NovaTech will exhibit at the 2018 DistribuTECH in San Antonio, Texas from January 23 - 25. Please come visit us in Booth #2135 to see our latest product offerings.

  • NovaTech Utility Systems and Services

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    March 18, 2016

  • SCADA in 20 Minutes

    Learn the steps to set up an OrionLX RTU, configure a Bitronics SCADA meter, build a WEBserver HMI (no PC required) and setup a WEBserver SCADA system.

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  • Remote Terminal Unit

    The NovaTech OrionLX or LXm Automation Platform can act as a Substation Remote Terminal Unit.

    September 17, 2014

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