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
Bleak, a striking name, hides powerful features behind it. It is a cross-platform asynchronous Bluetooth Low Energy (BLE) GATT client library written in Python, providing developers with a simple and easy-to-use interface to connect and control BLE devices effortlessly. This article will delve into the features, usage, and potential of Bleak in IoT applications. Bleak: … Read more
All you need to know about Low Energy Bluetooth (BLE) in 2020 We live in a space where fantasy and reality reflect each other, technology and culture intertwine, individuals and the collective merge, and privacy and transparency find balance. In a world of the Internet of Things, everything is striving to be excellent enough, and … Read more
Today’s Tech News Yesterday, Tencent’s stock price surged, reaching a historic market value of $300 billion, while Alibaba’s market value stood at $280 billion, and Baidu only at $60 billion. Tencent has now entered the top ten companies in the world by market value, with giants like Apple, Google, Microsoft, Amazon, and Facebook ahead of … Read more
Click the blue text to follow us Please message us to add to the whitelist If you like this article, feel free to share! For many small, portable Internet of Things (IoT) applications, the “Holy Grail” is a button battery that lasts 10 years. This is no easy task, as most inexpensive button batteries provide … Read more
Why is the BLE protocol stack layered? How to understand BLE “connection”? What would happen if the BLE protocol only had the ATT layer and no GATT layer? 1. Protocol Stack Framework Generally speaking, we refer to the implementation code of a protocol as a protocol stack. The BLE protocol stack is the code that … Read more
Smartphones are ubiquitous in people’s daily lives, and daily activities such as traveling, dining, shopping, entertainment, and chatting are almost inseparable from smartphones. The importance of smartphones is self-evident, so losing a phone is a significant problem for users. In response to this situation, Apple phones come with a built-in Find My program that can … Read more
Click the blue text to follow us Bluetooth Low Energy technology is a popular short-range wireless protocol for the Internet of Things (IoT), with its most significant advantage being high energy efficiency. It is increasingly being used across various segments of IoT. The Bluetooth Low Energy Mesh Network enables various applications that were previously impossible … Read more
2016 Microcomputer and Applications Issue 18 Authors: Shen Yi, Chen Zhangjin, Zhang Hongbin, Wu Zhiguo Abstract: This paper proposes a design for a maintenance key based on Bluetooth Low Energy technology to address the issues faced by enterprises using traditional keys to manage key cabinets, such as centralized management and poor security. The system uses … Read more