Data Transmission

Analysis and Solutions for Data Fluctuations in Weighing Instruments and Computer Data Transmission

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In industrial production, logistics warehousing, laboratory testing, and other scenarios, the real-time data transmission between weighing instruments and computers is a key step in achieving automated recording, analysis, and management of weight data. However, in practical applications, data fluctuations often occur—where the transmitted weight values fluctuate frequently and irregularly, failing to accurately reflect the true … Read more

Understanding TCP/IP: The ‘Universal Language’ of the Internet

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Imagine you want to send a letter to a friend far away. What do you need to do? You put the letter in an envelope, write the recipient’s address and postal code, add your own address, and finally drop it in the mailbox. This entire process is exactly like how your computer sends data over … Read more

Modbus TCP Message Parsing

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Modbus TCP is a mainstream communication protocol in the field of industrial Ethernet, based on the TCP/IP protocol stack for data transmission. It simplifies the verification mechanism based on Modbus RTU (relying on the TCP protocol’s own verification instead of CRC16), and implements device addressing and request-response matching in an Ethernet environment through the MBAP … Read more

The Magic of Clocks: A Battle Between Synchronous and Asynchronous Communication

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The Magic of Clocks: A Battle Between Synchronous and Asynchronous Communication, Like a Conductor Leading a Symphony and a Romantic Date Based on Mutual Understanding Understanding them is to grasp the cornerstone of modern communication. Have you ever wondered: “Synchronous communication requires a clock, while asynchronous communication requires matching baud rates. Wait? If the baud … Read more

Examples of RS232 Serial Communication Faults

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Example 1: Unable to Establish Communication Connection Symptoms: After connecting the computer and the device via the RS–232 serial port, communication cannot be established. Troubleshooting Process: Check Hardware Connections: Ensure that the serial cable is securely connected and that the connectors are not loose. Inspect the cable for any visible damage. Check Port Settings: In … Read more

Understanding HTTP Data Transmission and Connection Management

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HTTP communication typically includes entity data in the request and response messages (entity). An entity is the actual data content carried by the HTTP message, such as the request body in a request or the response body in a response. Each entity has corresponding metadata descriptions, such as Content-Type and Content-Length header fields.Content-Type indicates the … Read more

Fundamental Concepts of the Internet of Things

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Having been in the Internet of Things (IoT) field for two and a half years, I want to write something to document the pitfalls I’ve encountered, which can help me reflect while also assisting other colleagues. I am still a novice, so please refer to this with caution. Additionally, my main focus is on smart … Read more

Fundamental Concepts of the Internet of Things

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Having been in the Internet of Things (IoT) field for two and a half years, I want to write something to document the pitfalls I’ve encountered, which can help me reflect while also assisting other colleagues. I am still a novice, so please refer to this content with caution. Additionally, my main focus is on … Read more

In-Depth Analysis of the Bluetooth ISO Layer: The Foundation of Reliable and Efficient Wireless Communication

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In the complex protocol stack of Bluetooth technology, the ISO (Isochronous) layer, introduced as a core component in Bluetooth Low Energy (BLE) version 5.2, is specifically designed to address the demands for real-time, synchronized, and reliable data transmission. It fills the capability gap of traditional Bluetooth protocols in isochronous data flow scenarios (such as audio … Read more

Conditions for Generating SCK in SPI

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Summary in One Sentence The SCLK signal is not continuously present after initialization; rather, it is generated by the conductor (master) only when “singing” (transmitting data), similar to a musical beat, and stops once the performance is over. Detailed Breakdown: A Concert Analogy Let’s imagine the entire SPI communication as a concert: SPI Master = … Read more