Does anyone know if there is a way to get PuTTY to show the hex values of what it's receiving over a serial connection instead of characters?


In initial screen

Session | Logging

Select All session output, then select save file.

After saving the file, use any hex editor to see the result.

  • This also helped for me when Putty was not showing anything at all on the screen because of blank values (i.e. 0x01 which is "start of heading" in ascii. ) – lode Dec 11 '19 at 0:00

You can try using the raw protocol on the session screen in the configuration. It will show whatever is being transmitted directly from where you're connecting. If the device/system you're connecting to isn't transmitting HEX codes though, you may need a specialized terminal program to translate the output to hex codes.

  • 1
    The question is tagged and specifically mentions serial port communication. – JonC Jul 5 '16 at 17:47
  • In raw mode, it still doesn’t print non-printing characters. It also seems not to put them in clipboard when copying/pasting. – binki Oct 13 '16 at 17:16

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