[André Sarmento] needed to connect a computer to an RS-485 bus. 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.

ISODA products achieve the host RS-485/232 interface signals isolation to standard analog signal, to control the remote device. ISODA products can be applied to RS-232/RS-485 bus industrial ... to ...

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 or software, the device, called ...

Both RS232 and RS485 data buses are connected to the XPORT serial input via a level converter to step the signal down to 3.3V. This solution comes at a price because of the ethernet module ...

RS485 systems require a termination ... and an integrated DC/DC boost converter eliminates the need for multiple supplies to drive RS232 levels. Drivers and receivers are independently disabled ...

It can read from my PLC directly via RS232 (through I will likely use RS485 with a protocol converter). I need to RPi to catch the data, dump it to a database of some sort that updates a HTML5 page.