Huichuan PLC

Introduction and Troubleshooting of RS-485 Communication Interface for Siemens S7-200 PLC

by
Introduction and Troubleshooting of RS-485 Communication Interface for Siemens S7-200 PLC

Click on the above “ Technical Training ”, select “Pin to Top” 130,000+ industrial control professionals follow this WeChat platform: technical sharing, learning exchange, industrial control videos 1. Introduction In recent years, computer control has been rapidly promoted and popularized. Industrial control computers, PLCs, frequency converters, touch screens, robots, and flexible manufacturing systems are widely … Read more

Example | Mitsubishi PLC Controls Inverter via RS485

by
Example | Mitsubishi PLC Controls Inverter via RS485

Search on WeChat Technical Training Preparation Required hardware: Mitsubishi FX3G PLC, RS485 communication module (FX3G-485BD), one Inovance inverter, touch screen (MT6071IP). Required knowledge: PLC communication protocol, command sending, inverter communication parameter settings. Wiring The wiring is quite simple. Insert the FX3G-485-BD module into the PLC, short SDB and RDB, short SDA and RDA. Connect the … Read more

Common Communication Interfaces and Protocols of PLCs

by
Common Communication Interfaces and Protocols of PLCs

Difference Between RS232 and RS485 Interfaces 1. Physical Structure of the Interface 1. RS232 Interface One of the computer communication interfaces, typically the RS-232 interface appears in the form of 9 pins (DB-9) or 25 pins (DB-25). Generally, personal computers have two sets of RS-232 interfaces, referred to as COM1 and COM2. 2. RS485 RS485 … Read more

Understanding RS485 Communication

by
Understanding RS485 Communication

Before discussing RS485 communication, it is necessary to mention RS232 communication. If you are not familiar with RS232 communication, don’t worry. You have definitely seen and used the RS232 interface (if you don’t believe it, you can check behind your desktop computer at home). In fact, many people use the Siemens PCPPI programming cable to … Read more

Common PLC Interfaces and Communication Protocols Worth Learning

by
Common PLC Interfaces and Communication Protocols Worth Learning

Point“Jinan CNC Mold Technology Research Institute” focus Industry frontier, mechanical videos, CNC processing technology, 3D printing, industrial robots, productionprocesses, molds, machine tools, and other cutting-edge information are waiting for you here! Today, I will share several common interfaces and communication protocols for Siemens PLC. 1 Difference Between RS232 and RS485 Interfaces 1. Physical Structure of … Read more

Why Your PLC and Touch Screen Always Fail to Communicate?

by
Why Your PLC and Touch Screen Always Fail to Communicate?

Many technicians have the following problems. In fact, aside from the communication methods defined by manufacturers, the most common reasons for communication failure in projects can be summarized as follows: Have you selected the correct communication protocol (Modbus, RS232 free protocol, CANopen, EtherCAT)? Is the communication cable properly made ( RS232 RXD TXD GND RS485 … Read more

Communication Between S7-300/400 and SINAMICS S120 via DP Bus

by
Communication Between S7-300/400 and SINAMICS S120 via DP Bus

Communication Between S7-300/400 and SINAMICS S120 via DP Bus 1. Overview of DP Bus Communication Functionality S7-300/400 can communicate with SINAMICS S120 via DP bus for both periodic and non-periodic data communication. Using standard S7 function blocks SFC14/SFC15, the S7-300/400 PLC can send Control Word 1 (CTW1) and Main Set Value (NSETP_B) to the drive … Read more

Implementing Communication Design Between Inverter and PLC

by
Implementing Communication Design Between Inverter and PLC

Click↑↑Technical Training, follow and pin it to subscribe for free long-term 190,000+ Industrial Control professionals follow this WeChat platform: technical sharing, learning exchange, industrial control videos 1. Requirements Software Step7 V5.2SP1 PLC with Profibus-DP communication port: S7-315 2DP Profibus communication cable (6XV1830-0AH10) Profibus bus connector (6ES7972-0BB10-0XA0, with PG interface; 6ES7972-0BA10-0XA0 without PG interface) 1 MM440 … Read more

PPI, MPI, and Profibus Networks in Siemens S7-200

by
PPI, MPI, and Profibus Networks in Siemens S7-200

Click on the blue textFollow me! ☀The leading brand in automation remote education, the official WeChat platform of Jicheng Training Network! Follow Jicheng, and technical improvement is no problem! Source: Jicheng Training Network (Teacher Liang Zhibin) 1.3.1 PPI Network The PPI protocol is a communication protocol specifically developed for the S7-200. The communication ports (Port0/Port1) … Read more

PLC and Siemens Inverter DP Communication

by
PLC and Siemens Inverter DP Communication

This article mainly illustrates the specific application of the PROFIBUS-DP fieldbus in production sites through examples, detailing the hardware configuration, software programming, and relevant parameter settings for communication between Siemens PLC and frequency conversion devices via PROFIBUS-DP. In industrial applications, especially in the steel metallurgy industry, it is most common to control frequency conversion devices … Read more