Human Machine Interface (HMI) Systems

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Using original operator interfaces running on outdated, discontinued equipment and unsupported operating systems dramatically reduce reliability and increase maintenance costs. Limited hard drive space, inadequate diagnostic functions, archaic or proprietary communication protocols and difficult/complex procedures for basic changes are just some of the issues that add to the difficulty of working with these original systems. NERC cybersecurity compliance is also not possible with older operating systems and human machine interfaces because security updates are no longer supported.

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TMOS Human Machine Interface - Maximum Performance / Minimal Hassle

Turbine Monitoring System (TMOS) is a replacement Human Machine Interface (HMI) for existing and new turbine operator interface systems, and can also be used on the balance of plant (BOP) control system interfaces for most gas and steam turbine applications. Designed to provide ease of operation and flexibility, TMOS provides robust reliability on modern off the shelf hardware.

In the case of GE <I> or Cimplicity <HMI> operator interface systems, the TMOS is a simple and quick “plug and play” replacement for single unit systems and can be used to dramatically simplify multi-unit systems while bringing complete operator interface system redundancy. TMOS allows for the migration of the existing screens from original system, allowing the operator to use familiar screens on TMOS. The operators can then learn the additional new TMOS graphical displays which are also provided at their own pace.

Installation of TMOS DOES NOT require a Mark V firmware (PROM) upgrade OR a gas turbine outage. All the functions previously performed on the old machine interfaces are available on the TMOS with significant new features provided.


Features include:

  • Improved and user-friendly interface. Fast access to instrument or tag related documents directly from an animated display.
  • Drag-and-drop signals from animated display to graphical display (TrendViewer) for easy and fast trends set up.
  • Multiple animated displays can be viewed simultaneously.
  • Direct access to Mark V ladder logic with powerful search capabilities.
  • Mark V signals, Alarms, Diagnostics, Events and SOE historian function is standard in the base offering. Important data can be recalled at any time.
  • Connection and integration with other turbine monitoring systems is supported by the TMOS system. Supported systems include those using Modbus Master and Slave, OPC DA 3.0 and AE server.
  • TMOS is <C> core friendly and DOES NOT load up the Mark V communication core like the Cimplicity <HMI> system does. A single TMOS SCADA server can be linked up to 16 <C> processors without any significant impact on the speed of data transfer and update.
  • The standard TrendViewer graphical package is used to trend and analyze both historical and real-time analog and digital data. It can export charts to other data formats such as XML, CSV and Excel. Alarms and events viewer is integrated in this tool also so that users can cross analyze stored process values at the exact time stamp when an alarm or event occurs.
  • Mark V software or I/O changes can be automatically applied to TMOS SCADA just by updating the specific files, no project recompilation is required.
  • TMOS can be installed in parallel with an existing <I> or <HMI>, allowing operational and maintenance personnel time to get accustomed to the TMOS screens and capabilities.

TTS can set up a remote demonstration of the TMOS HMI system to allow for a more complete understanding of
its features and capabilities. Please call us to set this up.


Please Note: TTS is the exclusive distributor and technical partner for TMOS HMI in the Americas. We have installed TMOS in many facilities here in the US and Caribbean, but there are hundreds of installations of TMOS outside of the US where it known as TMOS SCADA.

Ever since TMOS was introduced to the market, the design team has never stopped developing and adding improvements, new interface possibilities and advanced features. Today, TMOS is a feature-packed, user friendly, robust and multi-connective system.

For a more detailed look at the technical information, please visit

In addition to providing the TMOS product, TTS also offers a range of HMI upgrades, migration and replacement capabilities for existing PLC, PAC and DCS systems including:

Main HMI Terminals

The main HMI terminal is typically a desktop PC complete with a Microsoft® Windows® operating system and a standard HMI graphics application package. TTS has extensive experience in developing and migrating graphics packages using the following software platforms:

  • WonderWare®
  • Cimplicity
  • FactoryTalk® View

The HMI software developed by our engineering team for use on gas turbines is a robust program offering a great deal of flexibility to the end user. Advantages include many advanced features now available through Microsoft Windows such as networking, data sharing between applications and multitasking. The system flexibility allows the terminal to be applied as any of the following:

  • Primary Operator Interface
  • Historian
  • Engineering Workstation

The TTS TMS-1000 HMI has been developed specifically for the needs of gas turbine operators. The information required for efficient operation of a gas turbine is placed at the fingertips of the operator and is available for display in several different formats each designed to meet a different set of common needs. The screens have been designed to provide the correct amount of data in a coherent manner.

Features of TMS-1000 systems include:

  • Multiple units can be viewed/controlled from a single terminal
  • Graphics are simple with clear easy-to-read data
  • Navigation through the system has been optimized

A strong emphasis has been placed upon the diagnostic capabilities of the system. Each screen was developed as both a source of normal operating data and a tool for system troubleshooting and problem solving. Every effort has been made to optimize the data on any given screen, hence avoiding screen clutter and information overload.

There are three categories of HMI screens:

  • Operations:
    All operations screens provide clear easy-to-read data to the operator. These screens also provide a controls interface (start, stop, etc.) to the gas turbine.
  • Maintenance:
    All maintenance screens are protected by passwords and offer technicians capabilities such as valve calibration both manually and automatically where possible.
  • Historical:
    These screens contain such data as fired hours, fired starts, trips etc. The operator can also access the historian and view historical data.

HMI Hardware Specification

With the constant advance of technology and levels of performance in the field of computer hardware, it’s not possible to provide a hardware specification that will be up to date for more than a few months. The standard TMS-1000 utilizes a desktop workstation with a Microsoft Windows based operating system. The computer hardware will reflect the current level of computer technology and will always exceed the HMI software's recommended specifications.

Optional HMI Configuration

In addition to the standard configuration, the TMS-1000 can also be deployed to include the following:

  • Rack Mounted HMI Servers
  • Redundant HMI Servers
  • Server/Client with Thin Clients or Workstations
  • Balance of Plant
  • SQL-Based Historian

VPN Remote Support

Our team employs the use of Cisco VPN technology to provide customers with remote support. The addition of a VPN router to the TMS-1000 system gives us secure access to the system to provide real-time troubleshooting. The VPN router is fully compliant with security standards (IPSEC, IKE, CA). Custom configurations are offered to comply with customer intranet security requirements.

Emergency Operator Interface

An Emergency Operator Interface is generally a more basic HMI system provided local to the unit to allow for operation if the main HMI system is compromised.

The TTS emergency operator interface (EOI) typically uses an Allen Bradley® PanelView Plus™ providing high performance in space saving, flat panel designs. The EOI provides both high quality graphics and high performance functionality to the operator. The EOI allows the operator a full range of control and monitoring functions.

The EOI communicates to the controller over the redundant ControlNet™ network and is supplied from the redundant 24Vdc power source. The EOI can be mounted on the control panel door or in a remote location.

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