Communication Protocols

Detailed Explanation of RS-485 Network Communication in Siemens PLC

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Detailed Explanation of RS-485 Network Communication in Siemens PLC

RS-485 Network The PPI, MPI, and PROFIBUS-DP protocols supported by the S7-200 system are typically based on RS-485 electrical networks as their hardware foundation. The RS-485 serial communication standard employs balanced signal transmission, also known as differential mode. This balanced transmission method effectively suppresses interference during transmission. Balanced transmission uses a pair of wires to … Read more

Application Solutions for Smart IoT Electric Meters in Factory and Campus Scenarios

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Application Solutions for Smart IoT Electric Meters in Factory and Campus Scenarios

1. Current Status of Traditional Electric Meters Traditional smart meters generally use standard transformer connections or direct wiring methods, with RS485 communication as the communication method, and additional functions are relatively limited. When faced with increasingly complex on-site application scenarios, they often struggle to meet demands. 1. For renovation projects, it is impossible to install … Read more

Modbus Function Codes: Definitions, Applications, and Selection Considerations

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Modbus Function Codes: Definitions, Applications, and Selection Considerations

In the field of industrial automation, the Modbus protocol has become the core standard for communication between devices due to its simplicity and wide compatibility. The Modbus function codes serve as the “instruction set” of the protocol, defining the types of commands between master and slave devices and determining the specific operations performed by the … Read more

Understanding I2C, SPI, and UART Through GIFs

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Understanding I2C, SPI, and UART Through GIFs

By 2025, communication protocols such as I2C, SPI, and UART will remain a vital part of the tech world. These protocols facilitate communication between various electronic devices and serve as the invisible heart that keeps our interconnected embedded systems and peripherals running optimally. In this article, we will dissect the functions, advantages, and limitations of … Read more

Data Acquisition, Storage, and Utilization in IoT Platforms

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Data Acquisition, Storage, and Utilization in IoT Platforms

For industrial Internet platforms, the core challenge is how to effectively connect, collect, store, and utilize IoT data while ensuring data accuracy and real-time performance.The Internet of Things (IoT) utilizes various technologies to achieve perception, connection, storage, and application of the physical world, providing deeper and more comprehensive data and services.Here is an analysis and … Read more

IoT Patent Traps: Assessing Infringement Risks in Device Interconnectivity Scenarios

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IoT Patent Traps: Assessing Infringement Risks in Device Interconnectivity Scenarios

When smart speakers automatically adjust air conditioning temperatures based on user voice commands, when smart locks trigger alarms in conjunction with security cameras, and when industrial sensors transmit operational data to the cloud in real-time— the interconnectivity of IoT devices is reshaping human life and production methods. However, behind this technological frenzy, a legal storm … Read more

SPI Communication Technology: Practical Applications of MCU and FLASH

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SPI Communication Technology: Practical Applications of MCU and FLASH

This article is approximately 4,500 words long, recommended for saving and reading. Author | Engineer Xiao Mo Produced by | Automotive Electronics and Software Welcome to follow the public account belowAbao1990, this public account focuses on autonomous driving and smart cockpits, providing you with automotive insights every day. We start with cars, but we are … Read more

Core Device Knowledge Graph in Industrial Control: From Principles to System Integration – PLC

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Core Device Knowledge Graph in Industrial Control: From Principles to System Integration - PLC

1.PLC (Programmable Logic Controller): The “Brain” of Industrial Automation 1.1 PLC Working Principles and Structural Composition PLC is the core device of industrial automation control systems, utilizing a “sequential scan, continuously cycling” working mode to achieve precise control of industrial equipment. Its basic components include the Central Processing Unit (CPU), input/output modules, power supply module, … Read more

The Battle of IoT Communication Protocols: In-Depth Comparison of MQTT and CoAP

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The Battle of IoT Communication Protocols: In-Depth Comparison of MQTT and CoAP

In the field of the Internet of Things (IoT), choosing the right communication protocol is crucial for device performance, battery life, network efficiency, and application reliability. MQTT (Message Queuing Telemetry Transport) and CoAP (Constrained Application Protocol) are two widely used lightweight protocols, each optimized for the characteristics of IoT devices, but they have significant differences … Read more

Multi-Protocol Data Acquisition Box for IoT

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Multi-Protocol Data Acquisition Box for IoT

The multi-protocol data acquisition box is an industrial IoT device that supports multiple communication protocols, enabling data collection, processing, and transmission from various devices in industrial environments. This type of device typically has the following features: Support for Multiple Protocols: The multi-protocol data acquisition box can support various industrial communication protocols such as Modbus, OPC-UA, … Read more