Understand the Protocols
That Power Everything
From factory floors to web browsers, protocols define how devices communicate. We break them down with clear explanations, visual diagrams, and real-world context.
Protocol Guides
Pick a protocol to get a complete breakdown with diagrams, examples, and FAQs.
Industrial Protocols
Protocols used in manufacturing, automation, and SCADA systems
Web Protocols
Protocols that power the internet and web applications
What Is a Protocol?
A protocol is a set of rules that defines how data is formatted, transmitted, and received between devices. Think of it as a language that machines agree to speak so they can understand each other.
Data Protocols
Data protocols like Modbus RTU and Modbus TCP enable communication between industrial devices like sensors, PLCs, variable frequency drives, and SCADA systems. They define how to read sensor values, write commands, and manage devices on a network.
These protocols are the backbone of manufacturing, energy management, building automation, and water treatment facilities around the world.
Internet Protocols
Internet protocols like HTTP and HTTPSare the foundation of the web. Every time you load a web page, call an API, or download a file, you're using HTTP. HTTPS adds encryption to keep that communication private and secure.
These protocols power everything from simple websites to complex microservice architectures, real-time APIs, and the vast ecosystem of web applications we use daily.
Why justprotocols?
Protocol documentation is often dense, dry, and hard to follow. We do it differently.
Visual Diagrams
Every protocol includes custom SVG diagrams showing frame structures, handshake flows, and architecture. No walls of text.
Easy to Digest
Complex protocols broken down into short sections with clear headings, comparison tables, and FAQ sections. No prior knowledge required.
Real-World Context
Learn where each protocol is actually used, from factory floors and SCADA systems to web browsers and REST APIs.
Start Learning
Jump into any protocol guide. Each one is self-contained with everything you need to understand how it works.