Modbus is a simple protocol, but the values inside registers can be displayed in many different ways. A single 16-bit register can represent: The challenge is that the Modbus protocol never tells you how to interpret the number. Only the device’s documentation explains the meaning. To decode Modbus data correctly, engineers must understand the different data type formats… Read More »
Modbus TCP/IP is one of the most widely adopted methods for connecting industrial devices over Ethernet networks. It is used in factories, power plants, water treatment facilities, building automation systems, and countless other fields where equipment must exchange information reliably. Even though modern automation protocols offer advanced features, Modbus TCP/IP remains extremely common because it is easy to… Read More »
In almost every industrial plant today, you’ll find at least a few devices communicating over Modbus TCP/IP—PLCs, power meters, drives, analyzers, and sometimes entire SCADA systems built around it. Even though Modbus is one of the simplest industrial protocols, people still run into problems with connections, firewalls, and port settings. And most of those issues trace back to… Read More »
In industrial automation, Modbus is one of the most common communication protocols used to connect devices such as sensors, controllers, meters, and SCADA systems.Over the years, two major versions of Modbus have been developed — Modbus RTU, which communicates over serial lines, and Modbus TCP, which communicates over Ethernet. As technology evolves, many industries face the challenge of… Read More »
Modbus is one of the most widely used communication protocols in industrial automation and control systems. Originally designed for serial networks, Modbus evolved to work seamlessly over Ethernet and IP networks, creating two common variants — Modbus RTU and Modbus TCP/IP. Although both use the same core data model and function codes, they differ in frame structure, transmission… Read More »
Welcome to this article dedicated to the Modbus protocol. In this comprehensive guide, we will explore in detail this widely used protocol in the field of industrial automation. Whether you are a student or an engineer, this introduction will provide you with the necessary basics to understand and implement the Modbus protocol. The Modbus protocol is an open… Read More »