1. Overview 2. Related Materials 3. USB Block Diagram 4. Understanding USB Concepts 4.1 USB Specification 4.2 USB Interface 4.3 USB Endpoint 4.4 USB Pipe 4.5 USB Data Transfer Types 4.6 USB Device Class 4.7 USB Descriptors 4.8 USB Communication Process 5. Summary 6. Discussion or Reflection 1. Overview USB (Universal Serial Bus) is ‘universal’ … Read more
Implementation of Communication Protocols in Industrial Automation Using C Introduction With the development of industrial automation, the demand for communication between various devices, sensors, and control units is increasing. In this context, communication protocols have become an essential foundation for data exchange among different systems. The C language, with its efficiency and low-level characteristics, is … Read more
1 Siemens Industrial Control System Industry Data Analysis According to statistics, in 2020, the share of medium and large PLCs in China’s industrial control system segment was 51.20%, while small PLCs accounted for 48.80%; regionally, European and American brands accounted for 63%, Japanese brands for 26%, and local brands only 11%; in terms of brands, … Read more
Abstract:This research studies methods for enhancing the security of the Message Queuing Telemetry Transport (MQTT) protocol and proposes a security reinforcement framework for MQTT protocol. First, the risks faced by the MQTT protocol are analyzed, extracting four security requirements: authentication, authorization, data transmission protection, and trustworthiness of the broker; secondly, the principles and applications of … Read more
MQTT Broker Proxy Server MQTT protocol is a simple transmission protocol for information data in the Internet of Things world, the full name of the protocol is Message Queuing Telemetry Transport. It is a message transmission protocol based on client-server and publish-subscribe model (Message Queue Telemetry Transport), and is an OASIS standard. The MQTT protocol … Read more
Old Jun is currently engaged in the Internet of Things industry and has a certain understanding of MQTT. This article briefly describes what MQTT is and how to use it. What Is MQTT The Internet of Things (IoT) and machine-to-machine (M2M) communication have had a lasting impact on how we interact with technology. By the … Read more
Source | Blog Garden The Internet of Things (IoT) is not just about new technologies but also the integration with older technologies, with communication being key. Various communication methods are available, but different protocols play a crucial role in connecting a vast number of ‘things’ to the internet. This article introduces two complementary protocols for … Read more
Table of Contents What is MQTT? MQTT Platform Use Cases Why is MQTT the Best Protocol for IoT? How Does MQTT Work? MQTT Workflow This article will demonstrate how to get started with the MQTT protocol through code examples. IoT and MQTT beginners can understand the concepts related to MQTT and quickly start developing MQTT … Read more
Set the public account as a star so you won’t miss the wonderful content! According to the votes from friends, the top-ranked PLC communication protocol that you most want to know about is still the EtherCAT bus communication protocol. The reason it ranks first will become clear through a series of articles introduced below. Results … Read more
Hello, electrical friends! Today, let’s talk about Siemens PLC communication protocols. As a seasoned automation engineer, I understand the importance of communication protocols in industrial automation systems. Just like people need a common language to communicate, different automation devices also require a “common language” to “talk” to each other. So, let’s embark on this exploration … Read more