RS 485

How to Control Mitsubishi Inverters with Mitsubishi PLC via RS-485 Communication

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How to Control Mitsubishi Inverters with Mitsubishi PLC via RS-485 Communication

Click the above ” Technical Training ” and select “Pin the Official Account“ 160,000+ industrial control professionals follow this WeChat platform: technical sharing, learning exchange, industrial control videos Methods for Mitsubishi PLC to Control Mitsubishi Inverters: Using the PLC’s digital output to control the inverter (i.e., directly connecting the PLC’s digital output to the inverter’s … Read more

Mitsubishi Communication Case: FX3U PLC and 485 Relay Module Communication Application

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Mitsubishi Communication Case: FX3U PLC and 485 Relay Module Communication Application

The 485 relay module uses the RS-485 communication protocol for data transmission, allowing independent or simultaneous control of multiple relay switch states through serial communication. This makes it easier to control multiple devices or circuits. It not only saves wiring costs but also features a compact size, strong anti-interference capability, long transmission distance, and high … Read more

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

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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

Complete Guide to RS-485 Interface Circuit

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Complete Guide to RS-485 Interface Circuit

This design guide discusses how to design RS-485 interface circuits. The necessity of balanced transmission line standards is discussed, along with an example of process control design. The article also discusses line load, signal attenuation, fault protection, and current isolation under various headings. 1. Why Balanced Transmission Line Standards Are Necessary The focus of this … Read more

Structural Design of RS-485 Bus Cable for Tower Solar Photothermal Power Mirror Field Communication

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Structural Design of RS-485 Bus Cable for Tower Solar Photothermal Power Mirror Field Communication

Abstract:This paper introduces the main technical performance requirements of RS-485 bus cables for communication in the 90 ℃ tower solar photothermal power generation mirror field. It elaborates on the material selection and production process control of heat-resistant, cross-linked polyethylene insulated RS-485 bus cables used in the 90 ℃ tower solar photothermal power generation mirror field. … Read more

Why RS-485 Requires Isolated Communication

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Why RS-485 Requires Isolated Communication

RS-485 is a physical layer bus design standard used in industrial and instrumentation applications, and it has become one of the most widely used standard communication interfaces in the industry.This communication interface allows for multipoint bidirectional communication over a simple pair of twisted wires, and its noise suppression capability, data transmission speed, cable length, and … Read more

RS-485 and RS-232 Long Distance Cable Transmission Solutions

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RS-485 and RS-232 Long Distance Cable Transmission Solutions

In industrial automation and monitoring systems, the stability and reliability of data transmission are crucial. RS-485 and RS-232, as two common serial communication standards, each have unique advantages and limitations. Especially in terms of long-distance cable transmission, achieving stable and efficient data communication has always been a focus for engineers. This article will delve into … Read more

Detailed Analysis of the Role of Termination Resistors in PROFIBUS-DP Connectors

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Detailed Analysis of the Role of Termination Resistors in PROFIBUS-DP Connectors

PROFIBUS Physical Wiring and DP Connector Diagram From the diagram, it can be seen that when the switch is turned to “ON”, terminals A1 and B1 are connected to the termination resistor, so only A1 and B1 can be connected at the end of the DP network; otherwise, the termination resistor cannot be connected. When … Read more

Differences Between RS-232, RS-422, and RS-485

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Differences Between RS-232, RS-422, and RS-485

Serial communication is one of the most basic communication methods faced by electronic engineers, and RS-232 is the simplest among them. However, many beginners often cannot clearly understand the relationship and differences between UART and RS-232, RS-422, and RS-485. This article will discuss these concepts to help clarify their relationships. Communication issues, like traffic problems, … Read more

Subtle Differences Between RS-232, RS-422, and RS-485

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Subtle Differences Between RS-232, RS-422, and RS-485

Serial communication is the most basic communication method faced by electronic engineers, with RS-232 being the simplest form. However, many beginners often struggle to understand the relationship and differences between UART, RS-232, RS-422, and RS-485. This article will discuss these concepts to help clarify their relationships. Communication issues, like traffic problems, also have various scenarios … Read more