A simple converter can be sourced online, but the only thing he could find locally that was even close was a USB to RS-232 converter. He used that component to craft his own USB to RS-485 bridge .

Advantech’s industrial-grade isolated RS-232 to RS-422 or RS-485 converter is now available from the company’s e-store. With no change to associated computer hardware ... (for a straight pin-to-pin ...

Balluff has added this neatly-packaged bi-directional interface for connecting RS232 cables to IO-Link (IEC 61131-9) cables. “The converter lets you connect devices like barcode scanners, printers or ...