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WeidmullerSA Weidos-ESP32-package : How Does Weidmüller Weidos Actually Use the W5500's TOE?

Weidos doesn't use the W5500 as a plain Ethernet PHY/interface. Its official Ethernet.h-based library talks directly to the W5500's hardware TCP socket (TOE).

lawrence

Published August 29, 2026

Original author: WeidmullerSAOriginal source (new tab)

WeidmullerSA Weidos-ESP32-package : How Does Weidmüller Weidos Actually Use the W5500's TOE?

Project description

How Does Weidmüller Weidos Actually Use the W5500's TOE? — Analyzing the Official Software Repository TL;DR: Weidos doesn't use the W5500 as a plain Ethernet PHY/interface. Its official Ethernet.h-based library talks directly to the W5500's hardware TCP socket (TOE). On top of that, the official ModbusTCP_Master example follows an EthernetClient → W5500 hardware socket → TOE path — confirmed at the code level. Overview In our previous WIZnet Maker post, we confirmed that Weidmüller Weidos is an industrial DIN-rail IoT controller combining an ESP32 with a WIZnet W5500, and that product…

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