Follow+Star Public Account Number, don’t miss out on exciting contentSource | Internet When designing electronic circuits, practical experience is crucial, but it is built upon theoretical knowledge. Therefore, we still need to master some common electronic knowledge. The following organizes some common circuits, displayed in dynamic graphics. 1. Single-Phase Bridge Rectifier Circuit 2. Single-Phase Half-Wave … Read more
Introduction Hello everyone! Today, I want to talk about a topic that many automation engineers both love and hate — the selection of PLC communication interfaces.Don’t worry, I will explain the advantages and disadvantages of various communication interfaces in the most relatable way.Trust me, choosing the right communication standard can improve your device interconnection efficiency … Read more
M-Bus Multi-Master to Modbus RS232 (RS485) – ADFWEB Converter – Guangzhou Xinyu IoT Author: Zou Wuyi Mobile 185-020-77899Email: [email protected] 1 Product Features: HD67063-232-B2-xxx / HD67063-485-B2-xxx is a gateway device that supports Modbus slave and M-Bus master/slave communication. It has the following features: Electrical isolation between RS232C/RS485 and M-Bus ; Baud rate and parity can be … Read more
Hello everyone, today we are going to discuss a topic that is both frustrating and rewarding in the industrial field—how to make the “old gentleman” Modbus and the “modern youth” TCP/IP shake hands and make peace. Last year, while debugging a sewage treatment plant project, I encountered a “generation gap” issue between these two protocols, … Read more
Click the blue text to follow! Old Li Talks About PLC Function Block Programming: Making Devices “Understand Each Other” A few days ago, Xiao Wang asked me: “Old Li, why can’t our new Siemens PLC connect with that Japanese Mitsubishi one? I followed the manual, but it seems like the devices can’t ‘understand’ each other.” … Read more
J1939 to Modbus Master – ADFweb Gateway Converter– Guangzhou Xinyu IoT Author: Zou Wuyi [email protected] 1、Product Features: Configurable J1939 to Modbus master gateway supports the following functions: Baud rate can be changed via software; Electrical isolation between the two buses; Can read data requested by the gateway from J1939 frames to Modbus devices; Power supply … Read more
1. Introduction Modbus communication is a widely used communication protocol, commonly applied in variable frequency drives, smart instruments, and other intelligent devices. This article uses the S7-200SMART series PLC as the Modbus master and the Siemens V20 variable frequency drive and Omron E5EZ intelligent temperature controller as slaves to share how to use a custom … Read more
Practical Sharing: How I Built the Siemens S7-1200 IoT Gateway Hello, old friends! Hello everyone, I am Engineer Wang, and I have been engaged in automation and IoT integration for over ten years. Today, I would like to share with you a project experience I recently completed—how to build a reliable IoT gateway using the … Read more
As a classic communication protocol in industrial automation, Modbus has been widely used globally since its inception in 1979. From the initial serial communication to today’s high-speed Ethernet links, Modbus has undergone technological evolution and expansion, marking a milestone in the field of industrial communication. The Origin of the Protocol: The Beginning of Serial Communication … Read more
Connecting a PLC to an energy meter? It sounds quite sophisticated, but it’s similar to connecting a Bluetooth headset to a phone; it’s just two devices communicating with each other. Modbus is the “language” they use to chat, which simply means sending and receiving data in a specific format. The S7-200 SMART is a compact … Read more