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Versatile real-time technology

The dSPACE hardware-in-the-loop (HIL) simulator is based on SCALEXIO technology. It is available from small to large systems while providing very high processing power. It is configured entirely by software, which makes adapting to changing requirements flexible and easy. The SCALEXIO simulator can be coupled with other dSPACE systems, such as Simulator Full-Size and Simulator Mid-Size, offering an easy way to update existing HIL systems.

  • Support of processor-based and FPGA-based simulation

    The dSPACE Electrical Power Systems Simulation Package allows for the real-time simulation of electrical power system models developed in Simscape Power Systems™ (formerly SimPower­Systems™). The package provides various ways to integrate Simscape Power Systems™ models in a dSPACE HIL environment for processor-based and FPGA-based simulation. 

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  • Support of SPI and I2C

    The SCALEXIO Serial Interface Solution lets you use the Serial Peripheral Interface (SPI) and Inter-Integrated Circuit (I2C) bus with a SCALEXIO system. 

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    The new SCALEXIO LabBox offers slots for up to 18 SCALEXIO I/O boards, making it the smallest dSPACE simulator to date. Together with the SCALEXIO Processing Unit as a computation node, it provides users with their own desktop HIL simulator.

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  • Flexible function tests

    A small, variable, custom hardware-in-the-loop simulator would be ideal to quickly test a new function or controller. This is exactly what the new SCALEXIO LabBox from dSPACE offers.

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  • Success in Action

    Launched two years ago, the SCALEXIO hardware-in-the-loop (HIL) test systems from dSPACE have already proven their value in numerous customer projects. They are now being used across the globe, in countries such as China, France, Germany, Italy, Japan, the UK and the USA.

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  • Five years of SCALEXIO – Looking back and to the future

    In 2011, SCALEXIO was introduced as the new dSPACE hardware-in-the-loop (HIL) system. Tino Schulze, responsible for HIL test systems at dSPACE explains the past development and the plans for the future.

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  • How to Get the Best out of Your HIL Systems

    In this webinar recording, dSPACE shows you how to quickly optimize the use of HIL   systems, become ISO-26262-compliant, perform requirements-based testing, and achieve 24/7 HIL operation.

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Application Area

dSPACE SCALEXIO is a very versatile technology that provides highly flexible channels, can be extended to any required size and is completely software-configurable. Its application range covers all test domains, including the test of electronic control units (ECUs) of electric drives.

Thanks to the SCALEXIO multiprocessing feature, the simulator can be coupled with existing SCALEXIO-based or DS100x-processor-board-based systems, allowing users to expand their existing test setups to meet growing project needs.

Key Benefits

  • Support of different workflows and user roles by separating I/O configuration, modeling and code generation
  • Test of different ECU variants and types on a single system with minimal configuration effort
  • Easily resizable to fit specific test tasks because component test systems and network systems are both built with the same standardized hardware components and connections
  • Graphical configuration of channels
  • Support of Functional Mock-up Interface (FMI) 

The SCALEXIO system is standardized and can be reused in all SCALEXIO system variations.

  • The core of a SCALEXIO system, the SCALEXIO Processing Unit, is based on commercially available components so that the processing technology is always up-to-date.
  • IOCNET, the scalable serial I/O network, makes scaling SCALEXIO systems easy by allowing for decentralized setups. It also provides the internal communication between the real-time processor and the I/O boards.

The SCALEXIO I/O units are specifically designed for typical ECU signals and offer:

  • Local signal preprocessing on I/O boards to relieve the load on the real-time processor
  • Integrated signal conditioning, as well as converters and parts of the electrical failure simulation
  • Similar installation and configuration processes for all units, so very little time is spent on learning

The SCALEXIO I/O hardware comprises three hardware types, each specially designed for typical application needs. MultiCompact, HighFlex and SCALEXIO I/O hardware can be combined and extended to produce whatever system configuration you want. They have the following in common:

  • Local signal preprocessing on I/O boards to relieve the load on the real-time processor
  • Connection to the processing unit via an IOCNET interface
  • Completely software-configurable
  • Similar installation and configuration processes, so very little time is spent on learning


  • Large number of I/O channels for specific applications
  • Each channel has a fixed channel type, so the costs per channel are low.
  • Integrated signal conditioning and converters
  • Onboard Failure Insertion Unit (FIU)
  • Connection of real and substitute loads is possible
  • Can be used in a SCALEXIO rack
  • DS2680 I/O Unit
    • Compact design for installation in a unit carrier
    • Basic functions for a fully adequate simulation system, such as power switch
    • Various channels with dedicated I/O functions
  • DS2690 Digital I/O Board
    • Standardized connector for slot independence and easy assembly
    • Digital channels with dedicated I/O functions


  • Universal input/output/bus channels with freely assignable channel types
  • Very versatile and finely scalable with 10 channels per I/O board, 4 channels per bus board
  • Galvanic isolation for each individual channel
  • Integrated signal conditioning and converters
  • Onboard Failure Insertion Unit (FIU)
  • Connection of real and substitute loads is possible
  • Can be used in a SCALEXIO rack
  • Standardized connector concept for all boards
  • Boards are slot-independent and easy to assemble.
  • DS2601 Signal Measurement Board
  • DS2621 Signal Generation Board
  • DS2642 FIU & Power Switch Board
  • DS2671 Bus Board
  • Large number of I/O channels with dedicated channel types
  • Focus on I/O functions without current-related functionality
  • Small board size
  • Can be used in a SCALEXIO rack or SCALEXIO LabBox
  • Connection to I/O via Sub-D connector
  • Boards are slot-independent and easy to assemble
  • DS6101 Multi-I/O Board
  • DS6201 Digital I/O Board
  • DS2655 FPGA Base Board


SCALEXIO Processing Unit The latest processor technology ConfigurationDesk for SCALEXIO Configuration and implementation software for dSPACE SCALEXIO hardware DS6001 Processor Board Compact and highly performant SCALEXIO board for fast closed-loops DS6101 Multi-I/O Board SCALEXIO® I/O hardware with signal conditioning for automotive systems DS6201 Digital I/O Board SCALEXIO® I/O board with 96 bidirectional digital I/O channels DS6221 A/D Board Fast SCALEXIO A/D Board for precise measurements DS2655 FPGA Base Board SCALEXIO® HighFlex board with user-programmable FPGA DS6301 CAN/LIN Board SCALEXIO® I/O board for interfacing simulators with CAN and LIN bus systems DS6331-PE Ethernet Board The DS6331 provides additional Ethernet ports for the SCALEXIO Processing Unit DS6332-CS Ethernet Board The DS6332 provides additional Ethernet ports for the DS6001 Processor Board DS2601 Signal Measurement Board SCALEXIO® HighFlex I/O board for measuring ECU output signals DS2621 Signal Generation Board SCALEXIO® HighFlex I/O board for simulating ECU inputs DS2642 FIU & Power Switch Board SCALEXIO® HighFlex board for power-switching with Failure Insertion Unit DS2671 Bus Board SCALEXIO® HighFlex board for interfacing to different bus systems DS2680 I/O Unit SCALEXIO® MultiCompact unit for powertrain and vehicle dynamics scenarios DS2690 Digital I/O Board SCALEXIO® MultiCompact board for vehicle body scenarios DS2907 Battery Simulation Controller SCALEXIO® power supply control for battery simulation Electrical Power Systems Simulation Package Real-time simulation of power electronics circuits developed with Simscape Power Systems™ EMH Solution for SCALEXIO Provides a comprehensive I/O library for processor-based HIL simulation of electric drives SCALEXIO Solutions for Aerospace SCALEXIO® modules for aerospace applications with ARINC 429, MIL-STD-1553, or AFDX® SCALEXIO Serial Interface Solution Lets you use the Serial Peripheral Interface (SPI) with a SCALEXIO system SCALEXIO TWINsync Solution SCALEXIO® solution for controlling electric drives in perfect synchronicity SCALEXIO LabBox SCALEXIO® desktop HIL simulator for developers SCALEXIO Rack System The SCALEXIO off-the-shelf HIL simulators are available with up to 12 height units. SCALEXIO Fieldbus Solution SCALEXIO® interface solution for PROFIBUS and EtherCAT ControlDesk Universal experiment software for ECU development MotionDesk 3-D online animation of simulated mechanical systems in real time, e.g., for visualizing ADAS or vehicle dynamics scenarios Automotive Simulation Models Tool suite for simulating the engine, vehicle dynamics, electrical system, and traffic environment AutomationDesk Powerful test authoring and automation tool for HIL testing of ECUs
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