Industrial Ethernet


Why Ethernet?

When we introduced the lesson on the evolution of buses in Automation Evolutionary Trends we showed control connectivity evolving from manual to pneumatic to 4-20mA to fieldbus to Industrial Ethernet. Each step improved manufacturers’ ability to install, commission, operate, and maintain their production lines. The step to fieldbuses provided the benefits of reduced wiring, additional information, and faster diagnostics. It […]


Network Reference Model

Networks are usually represented by a seven-layer model, the ISO/OSI Reference Model. In the Ethernet world, the seven layers collapse to four. PROFINET uses all four, but not all the time. But we’re getting ahead of ourselves; let’s start at the beginning: the seven layer model. Here’s the seven-layer model with the layers labeled and their functions defined. The layers […]


Time Sensitive Networking – TSN overview

What is TSN? Time Sensitive Networking or “TSN” refers to a set of IEEE 802 standards that make Ethernet deterministic by default. It has evolved from the industry’s use of Audio / Video bridging (A/V) and the need for more devices and synchronized communications. As more users connect up their devices to the Industrial Internet of Things and Industry 4.0 this […]