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How to Connect Legacy Modbus TCP Devices to a Modern EtherNet/IP Network

Most factory floors aren't running a single protocol — they're running a mix. Your modern PLC speaks EtherNet/IP. Your power meters, flow sensors, and VFDs still speak Modbus TCP. Replacing all that legacy hardware is expensive and unnecessary. A Modbus TCP to EtherNet/IP gateway bridges the gap, giving you full visibility across your network without touching a single wire. Here's how to set one up — and what to watch out for before you do.

• EtherNet/IP
• modbus

Industrial Networking: From Modbus to OPC UA in the Age of IIoT

Industrial networking has transformed from serial protocols like Modbus and PROFIBUS to Ethernet-based and IIoT-ready systems such as OPC UA and MQTT. As industries move toward connected, data-driven operations, interoperability, security, and scalability have become essential. Understanding how these protocols evolved reveals how modern networks enable seamless communication between devices, systems, and the cloud.

• EtherNet/IP
• Internet of Things (IoT)
• modbus
• PROFIBUS/PROFINET

Introducing GRID485: A Smarter Way to Bridge Serial to Ethernet

Meet the GRID485 – the enhanced serial to Ethernet converter with wireless connectivity, top-tier security, and user-friendly features. Upgrade your network infrastructure with this versatile and future-ready device.

• Company News
• EtherNet/IP
• modbus
• Products

Webinar: Modbus Mastery - Strategies for Successful Application Extension and Product Networking

Learn how to modernize and extend Modbus applications with real-world strategies from Grid Connect’s Modbus experts. This webinar covers how to add Modbus TCP, bridge legacy devices to protocols like PROFINET and MQTT, and streamline integration using gateways and embedded solutions. Ideal for OEMs, engineers, and system integrators looking to scale, simplify, or future-proof their industrial networks.

• modbus
• Webinar

Modbus TCP vs. EtherNet/IP: An Engineer's Guide

Choosing between Modbus TCP & EtherNet/IP? Uncover nine crucial factors to consider for optimized efficiency and production on your factory floor.

• EtherNet/IP
• modbus

Modbus RTU and Modbus TCP: Are you still alive?

• modbus

MODBUS in a Nutshell

MODBUS may seem complicated and confusing to some, but it is a very simple protocol when you understand how it works. MODBUS is a request and response protocol. A MODBUS master will initiate a request and a slave will respond with either an error or the data requested. This is the simple concept of MODBUS.

• modbus