Software: R20xcusb
Overview — r20xcusb software
r20xcusb is a Windows and macOS driver and utility package for the R20xc USB audio interface (a class-compliant/specialized USB-to-audio device). It provides the kernel-level driver, device control panel, and optional firmware/firmware-update tools needed to run the interface reliably, route audio streams, and configure sample rate, buffer size/latency, clocking and I/O routing.
Problem 3: The software crashes upon clicking a relay button.
- Cause: .NET Framework or Visual C++ Redistributable missing.
- Solution: The R20XCUSB GUI is often written in C#. Install the latest Microsoft .NET 4.8 or .NET 6.0 Runtime.
Command to turn on Relay 5 (example protocol)
ser.write(b'\xA0\x05\x01') # Hex command time.sleep(1) ser.write(b'\xA0\x05\x00') # Turn off r20xcusb software
ser.close()
5. Key Software Features
- Real-time CAN bus monitoring with timestamp resolution down to 1 µs.
- Message filtering (by ID, mask, or data patterns).
- Transmission capability – send single or periodic CAN frames.
- Logging & playback – record bus traffic for offline analysis.
- Scripting support – Python or Lua scripts for automated testing.
- Hardware timestamping – reduces PC latency jitter.
