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How to Network RS-422/485 Robotics Devices with WIZnet W55RP20 on PP-Ethernet-RS422/485?

PP-Ethernet-RS422/485 is a commercial Ethernet-to-serial converter module for connecting RS-422 and RS-485 devices to wired TCP/IP networks.

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Published June 15, 2026

Original author: platypusOriginal source (new tab)

How to Network RS-422/485 Robotics Devices with WIZnet W55RP20 on PP-Ethernet-RS422/485?

Project description

How to Network RS-422/485 Robotics Devices with WIZnet W55RP20 on PP-Ethernet-RS422/485? Summary PP-Ethernet-RS422/485 is a commercial Ethernet-to-serial converter module for connecting RS-422 and RS-485 devices to wired TCP/IP networks. The module uses WIZnet W55RP20, which combines Raspberry Pi’s RP2040-class MCU with WIZnet’s W5500 Ethernet controller. In robotics and commercial automation systems, W55RP20 handles the serial-to-Ethernet conversion path: serial device data is transmitted as TCP/IP traffic, and received TCP/IP data is converted back into RS-422 or RS-485 serial data. What…

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