▼Click the business card below to follow our public account▼ Today, let’s talk about the RS-485 bus. RS-485 is also a very widely used communication interface. This article will discuss the key points, and it is a bit long, about 5000 words. The Past and Present RS-485, what does RS mean? It stands for Recommended … Read more
Introduction: The RS-485 bus is now used less frequently, but many systems still rely on it, making it necessary to learn about it. Main Content: 1. On-site Wiring Specifications The RS-485 bus is widely used due to its low cost and simple design, finding applications in security monitoring, intelligent transportation, smart buildings, data center monitoring, … Read more
JZGKCHINA Industrial Control Technology Sharing Platform 1 Introduction: RS-485 is a standard protocol for transmitting data that can be used to establish a reliable, high-speed, real-time, multi-node data communication network connection. RS-485 is also known as TIA-485. RS-485 defines the electrical characteristics of drivers and receivers used in serial communication systems. RS-485 is widely used … Read more
RS-485 Bus Overview When the communication distance is required to be from tens to thousands of meters, the RS-485 serial bus standard is widely used. RS-485 uses balanced transmission and differential reception, thus it has the ability to suppress common-mode interference. Additionally, the bus transceiver has high sensitivity and can detect voltages as low as … Read more
The RS-485 bus has advantages such as a simple structure and low cost. However, when engineers set up RS-485 bus networks, they often encounter the question: should termination resistors be added to improve the reliability of the entire network’s communication? This article will answer that question. 1. The Role of Termination Resistors For the RS-485 … Read more
The RS-485 bus is widely used in communication, industrial automation, and other fields. In practical applications, we often encounter the question of whether to add pull-up and pull-down resistors and what size of resistors is appropriate. Below, we will conduct a detailed analysis of these issues. 1. Why Are Pull-Up and Pull-Down Resistors Needed? 1. … Read more
Click the “Technical Training” above and select “Top Official Account“ 170,000+ industrial control professionals follow the WeChat platform: technical sharing, learning exchange, industrial control videos 01 Number of Connections The S7-200 SMART CPU can connect to Siemens HMI devices that support the PPI protocol through the integrated RS485 port or signal board, or it can … Read more
Click↑↑Technical Training, follow and pinto subscribe for free long-term 180,000+Industrial control professionals follow this WeChat platform: technical sharing, learning exchange, industrial control videos After establishing RS-485 communication between the inverter and PLC, commands sent by the PLC via the communication cable can be received. If multiple inverters are connected to the PLC via RS-485, each … Read more
Typically, we categorize IoT devices into three types: ① No mobility, large data volume (uplink), requiring a wide frequency band, such as urban surveillance cameras. ② High mobility, requiring frequent switching, small data volume, such as fleet tracking management. ③ No mobility, small data volume, not sensitive to latency, such as smart metering. NB-IoT was … Read more
With the advancement of 5G network technology, the Internet of Things (IoT) is rapidly developing. Today, countless IoT devices are shining in every corner of the world. However, unlike traditional internet, end-to-end communication has always been a challenge for IoT businesses. The different IoT communication protocols used create a huge gap in communication between these … Read more