Skip to content

How Does W5300 Ethernet Support an OPC-UA Agent for Legacy PLCs?

This paper validates an OPC-UA agent using a legacy controller whose network interface is a WIZnet W5300 Ethernet controller.

Benjamin

Published June 26, 2026

166 UCC

11 WCC

31 VAR

2 Following

Original author: Seung-Yong Lee, Minyoung Sung · South KoreaOriginal source (new tab)

How Does W5300 Ethernet Support an OPC-UA Agent for Legacy PLCs?

Components

Hardware components
W5300

WIZnet - W5300

x 1

The paper's experimental system table lists the legacy controller network as a WIZnet W5300 Ethernet controller

Software Apps and online services
MicroPython

micropython - MicroPython

x 1

Project description

📌 Overview Seung-Yong Lee and Minyoung Sung published this Applied Sciences paper on an OPC-UA agent for legacy programmable logic controllers. The paper is useful for WIZnet readers because its experimental system identifies the legacy controller network interface as a WIZnet W5300 Ethernet controller. The paper does not present a W5300 firmware release. Instead, it validates a system architecture: an external OPC-UA agent runs beside a legacy controller, keeps a synchronized image of PLC variables, exposes an IEC 61131-3 information model, and executes OPC-UA client function blocks on…

Keep reading with a free account

Guests can read 15 projects per visit. Log in or create a free account to read the full description, open the documents and join the comments.