Introduction In actual work sites, PLCs are often used to control inverters. There are several ways for PLC to control inverters, such as terminal control, analog control, and communication control. Among these, communication control has certain advantages over the first two methods, such as the ability to read multiple data from the inverter with just … Read more
1. Implementing Vending Machine Control System with KingView and Microcontroller Modbus Communication: KingView configuration software acts as the Modbus RTU master, while the microcontroller serves as the Modbus RTU slave. The microcontroller is programmed according to the logical requirements of this control system, and the KingView software can monitor and control the system’s inputs and … Read more
Having previously worked with microcontrollers and the following 20 types of PLCs for Modbus RTU serial communication, I am now sharing the correspondence table of these 20 PLC input, output, and register components with their Modbus address numbers. Mitsubishi X components support Modbus function code 02; Y components support Modbus function codes 01, 05, and … Read more
Hello everyone, good evening! Smart Control Education will officially go on holiday on February 29, 2022~ If you have any questions, you can add Xiao Zhi V: 18018269808 ; perhaps we haven’t met in person, but we have encountered each other online,Smart Control Education wishes everyone: Prosperity in 2022! What did Smart Control experience and … Read more
Search on WeChat Technical Training Introduction This article will detail the steps for connecting the Siemens S7-200 SMART PLC with the Smart Line touch screen via Modbus RTU communication. 1. Hardware Connection 1. Smart Line Touch Screen 485 Port Pin Definition As shown in Figure 1: Figure 1 2. 200 SMART PLC 485 Port Pin … Read more
Hello everyone, good evening! How have you all been recently? Has the pandemic affected you in any way? Today is still a technical article: Siemens PLC Communication – Modbus RTU Communication – New Features of S7-1200 Modbus (RTU) Instructions V4. Modbus RTU Communication: S7-200 smart Modbus RTU master station communication (√) S7-200 smart Modbus RTU … Read more
1. What is MODBUS? 1. Basic Concepts MODBUS is a communication protocol initially advocated by MODICON (now a brand of Schneider Electric). It has gradually been recognized as a standard communication protocol through practical applications by most companies. As long as data communication or transmission is conducted according to this protocol, different systems can communicate … Read more
Today, I will share with you some common interfaces and communication protocols of Siemens PLC. The first major question: The difference between RS232 and RS485 interfaces 1. Physical structure of interfaces 1. RS232 interface: One of the computer communication interfaces, the RS-232 interface typically appears in the form of 9 pins (DB-9) or 25 pins … Read more
Search on WeChat Technical Training Introduction Today, let’s talk about Modbus. First, let’s look at the main content for today: 01 Terminology Interpretation 02 Background 03 Protocol Principles 04 Transmission Methods 05 Differences Between Modbus RTU and Modbus ASCII 06 Modbus TCP and Its Considerations 07 Function Code Functions 08 Modbus Protocol Security Analysis 01 … Read more
PLC communication is a very important part of the automation control field, enabling information transmission and interaction between different devices to work together, improving the efficiency and intelligence of automated production systems. Below we will discuss common PLC communication protocols and methods: 01 Common PLC Communication Protocols PLC communication protocols are standards used to specify … Read more