CANoe Operating Modes and “Soft Realtime”

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CANoe essentially consists of two major software components. On the one hand, there is the GUI component, and on the other hand, there is the RT Kernel (Runtime Kernel). These two components can run on one system or be physically separated from each other. This leads to different CANoe operating modes. The operating modes have an influence on the soft realtime behavior of a simulation. But, which mode to choose?

What Can You Do With It? | What Problems Does It Solve?

The possibility to separate GUI and RT Kernel leads to three valid configurations:

Which Configuration Should I Choose for My Use Case?

 AdvantagesDisadvantagesSoft RealtimeUse Cases

Interface Mode

  • Only user computer needed
  • Simple setup 
  • Soft realtime questionable
Possible1
  • At office desk
  • Development tasks
  • Software tests with simulated bus

Distributed Mode

  • Soft realtime
  • Easy change from Interface Mode to Distributed Mode
  • Additional VTP Device necessary
Good
  • Simulation/model calculations with realtime requirements
  • Big simulation setups
  • Hardware-in-the-Loop systems

Standalone Mode

  • Headless operation
  • No user computer needed
  • Automation Interface available
  • No GUI
  • Only simple logging
Even better
  • Prototyping in test vehicles
  • Test stations
  • CI/CT via Automation Interface

1 Depends heavily on the CPU performance of the user computer and the software installed on it.

 

Sufficient soft realtime behavior is generally already achieved with Distributed Mode. Hard realtime behavior is possible with the free-of-charge Distributed Mode extension Extended Real Time. 

The free-of-charge Multi CANoe extension is ideal for large and time-consuming simulations and models with many network interfaces. All CANoe operating modes can be used.

Where Can You Find This Function In CANoe? | How to Start the Process?

The CANoe operating modes Distributed Mode and Standalone Mode can be avtivated in the Vector Tool Platform (VTP): CANoe|Home|Measurement|Vector Tool Platform. An existing VTP Device is required.

Related CANoe Topics

Graphic of the CANoe cube.
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