GE Mark VIe Distributed Control System

GE Mark VIe Distributed Control System


A versatile control system for many applications is Mark VIe. It offers networked, high-speed I/O for systems with simplex, dual, and triple redundancy. For I/O, controllers, and supervisory interface to operator and maintenance stations, as well as third-party systems, industry-standard Ethernet communications are employed. Mark VIe and associated controls employ ToolboxST* as a standard software platform for programming, configuring I/O, trending, and examining diagnostics. For efficient management of equipment assets, it offers a single source of high-quality, time-coherent data at the controller and plant levels.

What is GE Mark VIe?

A versatile platform for various applications is the Mark VIe distributed control system (DCS). For a simplex, dual, and triple redundant systems, it has high-speed networked I/O capabilities. Additionally, the Mark VIe provides SIL3-capable safety systems under a single standard operator and engineering toolkit.


The system’s brain is a single-board controller. Along with the primary CPU, it also has extra Ethernet drivers for the control network and redundant Ethernet drivers for interacting with networked I/O. For the primary processor and I/O, a real-time, multitasking QNX operating system is utilized. Application software is given and saved in non-volatile memory using a customizable control block language. It complies with the 32-bit floating-point format of IEEE-854. A deterministic, high-speed 100 MB communications network with a fiber interface is offered by the dedicated, full-duplex, point-to-point protocol known as IONet. It enables the communication between networked I/O packs, also known as I/O packs, and the primary processor(s).


The barrier or box-type terminal blocks used to mount each I/O pack are on the board. A power supply, a local processor, a data acquisition board, and two Ethernet ports are all included in the I/O pack. A control system frame rate of 10 ms in a simplex, dual, or triple redundant architecture is possible thanks to the increase in computation power that comes with the addition of I/O packs. Each I/O pack’s local processors run algorithms at higher rates as needed by the application because some process sub-systems need even more performance.


Depending on how crucial a process is, each application has a particular set of redundancy requirements. Mark VIe offers a wide variety of redundancy options that can be provided in almost any combination and deployed locally or remotely. These redundant alternatives include some of the following:

  1. Energy sources and resources
  2. Controlling (main processor)
  3. Redundant I/O network design
  4. Each terminal board’s I/O packets
  5. An I/O and Ethernet Ports pack


To digitize the sensor signal, run algorithms, and connect to a separate controller that houses the main processor, one or more I/O packs are installed on each board. I/O packs have a data acquisition board that is specific to the class of input device and a local processor board that runs the QNX operating system. Algorithms are executed by local processors more quickly than by the overall control system.

  • Dual 100 MB Ethernet ports
  • 100 MB full duplex ports
  • Online repair per I/O pack
  • Operation -30°C to 65°C (-22 °F to 149 °F)
  • Accuracy -30°C to 65°C (-22 °F to 149 °F)
  • I/O packs rated Class 1, Div. 2
  • Ambient temperature sensor
  • LEDs: power status and attention
  • LEDs: Ethernet link-connected and communication-active
  • LEDs: application-specific
  • Processor: 32-bit RISC CPU 266 mHz
  • Infrared Transceiver: Low-level diagnostics, monitor I/O,
  • set host/function names, error status
  • Power: 28 V dc (typical)
  • Internal solid-state circuit breaker and soft start 

Why Choose WOC?

Our dedication to excellence has gained the patrons’ trust for all turbine-generator requirements for nearly 15 years. We prioritize providing dependable quality and value together with quick responses, excellent communications, and creative solutions.

Working with WOC is simple. We give you rapid access to professional assistance wherever you need it. We guarantee fast, detailed communication and follow-through whether it’s across town or across the world. Only our engineering team’s breadth and depth of knowledge can match the efficiency and quickness of our response team for any size or type of repair project.


At WOC, our staff is committed to offering our customers gas turbine parts that are effective, of the highest caliber, and affordable. Our component improvements can increase turbine efficiency and lengthen their lifespan! Find out about all of the gas turbine-generator parts we provide by speaking with one of our experts right away.


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