Serial Communication

Understanding PLC Interfaces: RS-232, RS-422, RS-485

by
Understanding PLC Interfaces: RS-232, RS-422, RS-485

Over 70,000 friends have followed this industrial control WeChat platform:Technical sharing,Learning exchange,Industrial control videos As industrial control professionals, it is essential for us to understand these concepts, which greatly assist in programming and data communication. RS-232, RS-422, and RS-485 are all serial data interface standards, initially formulated and published by the Electronic Industries Alliance (EIA): … Read more

Principles and Connections of RS232 to RS422 Conversion

by
Principles and Connections of RS232 to RS422 Conversion

Typically, we use serial ports for direct broadcasting and switching control of video servers, recorders, and switchboards, mainly utilizing RS-232, RS-422, and RS-485 interfaces. Below we will discuss the serial port interface standards, usage, and external plugins and cables. The RS-232, RS-422, and RS-485 standards only specify the electrical characteristics of the interfaces, without involving … Read more

Understanding Start, Data, and Stop Bits in Serial Communication

by
Understanding Start, Data, and Stop Bits in Serial Communication

Search WeChat Jicheng Training JICHENGPEIXUN Serial port, short for serial port interface, is also known as serial communication interface or COM interface. Serial communication refers to a communication mode that uses a serial communication protocol to transmit data bit by bit over a single signal line. Serial ports are classified according to electrical standards and … Read more

Essential Knowledge for PLC Serial Communication

by
Essential Knowledge for PLC Serial Communication

WeChat Search Skill Training When electrical workers use PLCs, they will encounter many communication protocols and communication interfaces. Do you understand the most basic PLC serial communication and basic communication interfaces? 01 What is Serial Communication? Serial communication is a very common device communication protocol on computers (do not confuse it with Universal Serial Bus … Read more

Introduction to Serial Data Interfaces

by
Introduction to Serial Data Interfaces

1 The Origin of Serial Ports The serial port emerged around 1980, with data transmission rates ranging from 115kbps to 230kbps. Initially, the serial port was designed to connect computer peripherals, such as mice, external modems, old cameras, and graphics tablets. It can also be used for interconnecting two computers (or devices) for data transmission. … Read more

Fundamentals of RS232, RS422, and RS485 Serial Communication Protocols

by
Fundamentals of RS232, RS422, and RS485 Serial Communication Protocols

[Disclaimer] The images and text are sourced from the internet. If there is an infringement, please contact us for removal! Serial communication is a commonly used communication method in PLC networks. Choosing the correct interface type and protocol standard is crucial for ensuring communication reliability. The RS-232 interface complies with the serial data communication interface … Read more

Using ESP8266 to Connect to Wumart

by
Using ESP8266 to Connect to Wumart

Click the blue text above: “IoT Guesthouse” to follow us In this section, we will guide you to update the Ai-Thinker ESP8266 MQTT transparent transmission AT firmware, and then use a serial tool to control the ESP8266 to connect to Wumart Smart. 01 Preparation 1Hardware Preparation (1) Prepare the ESP8266 module, we will use the … Read more

RS485 and Modbus Communication Protocol Tutorial

by
RS485 and Modbus Communication Protocol Tutorial

Search on WeChat Technical Training In 1979, Schneider Electric established the Modbus protocol, a bus protocol used for industrial sites. Many industrial applications using RS485 communication adopt the Modbus protocol, so today we will explore RS485 communication and the Modbus communication protocol. 【1】/ Introduction In industrial control, power communication, and intelligent instruments, serial communication is … Read more

RS485 and Modbus Communication Protocol Tutorial

by
RS485 and Modbus Communication Protocol Tutorial

Introduction In 1979, Schneider Electric established the Modbus protocol, a bus protocol for industrial sites. Today, many industrial applications using RS485 communication adopt the Modbus protocol. So today we will learn about RS485 communication and the Modbus communication protocol. 1 Preface In fields such as industrial control, power communication, and intelligent instrumentation, serial communication is … Read more

Understanding Modbus Communication Protocol

by
Understanding Modbus Communication Protocol

This article aims to give you a clear understanding of Modbus, summarizing related knowledge about Modbus, which is very suitable for beginners. If there are any errors, suggestions and modifications are welcome. What Is a Protocol? Before understanding what Modbus is, let’s first look at what a protocol is. A protocol is a Chinese term, … Read more