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WSAL15817 – USB TO RS232 – 485 – TTL (B)/en

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Version vom 6. September 2026, 00:33 Uhr von JWTechPublisher (Diskussion | Beiträge) (Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex)
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Documentation notice: This technical documentation was independently rewritten from an archived supplier source. Check technical details and commands against the product version and manufacturer documentation before use.

Summary

Technical guide for the Waveshare USB-to-RS232/485/TTL converter (B). Covers connection under Windows, Linux/Raspberry Pi, macOS and Android, describes driver installation (CDC/VCP), shows commands for device detection, and gives troubleshooting tips for RS485 and limits of simultaneous use of the interfaces.

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Technical overview

  • The device supports operating systems Windows 7/8/8.1/10, Mac, Linux, Android and WinCE.
  • On Windows, the default active driver is the CDC driver; the manufacturer's VCP driver must be installed separately and becomes visible in Device Manager after installation.
  • On Linux or Raspberry Pi, the default driver can be used; the serial device name can be queried with 'ls /dev/tty*'.
  • To communicate with UART0, a command such as 'minicom -D /dev/ttyACM0' is entered.
  • On macOS, the appropriate driver must first be downloaded and installed; afterwards the serial debugging assistant can be opened.
  • The Android app is downloaded, extracted and installed; after launching the app, the device is detected via 'Scan Device' and parameters are set.
  • RS232, RS485 and TTL can all receive at the same time but cannot transmit simultaneously.
  • Direct conversion between RS232, RS485 and TTL is not supported; only conversion from USB into each of these interfaces is available.
  • For short-distance communication problems, remove the 120-ohm termination resistor on RS485; for long-distance problems, keep it connected.
  • A support ticket system is available for technical questions, with a response time of 1–2 working days, working hours 9:00–18:00 GMT+8 Mon–Fri.

Commands and examples – verify before use:  

ls /dev/tty*
minicom -D /dev/ttyACM0

Notes and version constraints

  • The source text contains template placeholders ({{{name2}}} etc.) – these were ignored.
  • The exact hardware revision (B) and precise electrical limits are not specified in the provided excerpt; please verify against the datasheet.
  • The compatibility list comes from the FAQ; there may be additional limitations depending on driver version.
  • No information about prices, stock, certifications or warranty was present in the source material.

Source and revision record

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