A: These are some possible causes: - Simulation preference may be set to Offline instead of Real-Time.
- Another simulation using I/O is already running. HyperView Real-Time Monitoring RT Monitor can be used to verify whether this is the case.
- I/O-type and/or I/O-Number do not correspond to the values in the .io I/O configuration file.
- I/O configuration files are set incorrectly (also in the .io file).
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