Year: 2025

Detailed Explanation of MQTT Packets【04】: PINGREQ & PINGRESP Heartbeat Messages

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Detailed Explanation of MQTT Packets【04】: PINGREQ & PINGRESP Heartbeat Messages

In previous articles, we introduced the following topics in MQTT 5.0:Detailed Explanation of MQTT Packets【01】: CONNECT & CONNACKDetailed Explanation of MQTT Packets【02】: PUBLISH & PUBACKDetailed Explanation of MQTT Packets【03】: SUBSCRIBE & UNSUBSCRIBENow, we will introduce the control packets used to maintain the connection: PINGREQ and PINGRESP. In addition to the control packets for connecting, publishing, … Read more

What is QoS in MQTT?

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What is QoS in MQTT?

In the last issue, we introduced the core of MQTT: The core of MQTT communication: Topic This time we will detail QoS, which stands for Quality of Service. (QoS) is a protocol between the message sender and receiver that defines the level of delivery guarantee for specific messages. Below, we will delve deeper into the … Read more

AALTO’s Zephyr Solar Drone Achieves Continuous Flight Record of 67 Days

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AALTO's Zephyr Solar Drone Achieves Continuous Flight Record of 67 Days

On May 2, AALTO announced that its Zephyr High Altitude Platform System (HAPS) has set a new stratospheric flight record, with one of its aircraft flying continuously for 67 days. The flight was jointly managed by the stratospheric operations center located in Farnborough, Hampshire, UK, and a ground control station in the United States, operating … Read more

S7-200: CANopen Bus Siemens PLC in New Energy Vehicle Test Bench

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S7-200: CANopen Bus Siemens PLC in New Energy Vehicle Test Bench

Application Overview Hello everyone! Today, I want to talk about the application of the S7-200 PLC combined with the CANopen bus in the new energy vehicle test bench. The development of new energy vehicles is progressing rapidly, and the test bench serves as the “health check center” for these vehicles, capable of detecting various performance … Read more

Comprehensive Analysis of CAN and CANopen Bus Technologies (Final Part)

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Comprehensive Analysis of CAN and CANopen Bus Technologies (Final Part)

[Image] We have completed the basic introduction to CAN and CANopen related technologies, and here is a summary: The CAN bus section features a well-made animation, which I would like to share with my friends who are following me 🤭[Image] Source: https://www.parlezvoustech.com/en/bus-can-2024-technolo…

SNMP Proxy to CANopen – ADFweb Gateway Converter

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SNMP Proxy to CANopen - ADFweb Gateway Converter

SNMP Proxy to CANopen – ADFweb Gateway Converter– Guangzhou Xinyu IoT Author: Zou Wuyi Mobile185-020-77899 Email: [email protected] 1 Features: HD67156 – A1 and HD67156 – B2 are SNMP Proxy /CANopen converters. They have the following features: • Maximum data read capacity of 1024 bytes, maximum data write capacity of 1024 bytes; • Triple isolation between … Read more

Guide to Selecting Fieldbuses: Which is Better, Profibus, Modbus, or EtherCAT?

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Guide to Selecting Fieldbuses: Which is Better, Profibus, Modbus, or EtherCAT?

Guide to Selecting Fieldbuses: Which is Better, Profibus, Modbus, or EtherCAT? Hello everyone, I am Xiao Feng. Yesterday, I received a call from a junior colleague who said he had a new project and needed to choose a fieldbus. He asked me, “Xiao Feng, with so many fieldbuses available, which one should I choose? Is … Read more

PROFIBUS Slave to SNMP Agent – ADFweb Gateway Converter – Guangzhou Xinyu IoT

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PROFIBUS Slave to SNMP Agent - ADFweb Gateway Converter - Guangzhou Xinyu IoT

PROFIBUS Slave to SNMP Agent – ADFweb Gateway Converter– Guangzhou Xinyu IoT Author: Zou Wuyi Mobile185-020-77899 Email: [email protected] 1 Features: HD67169 – A1 is a PROFIBUS slave/ Simple Network Management Protocol (SNMP) agent converter. It has the following features: • Maximum support for read operations of 244 bytes, maximum support for write operations of 244 … Read more

Detailed Explanation of MODBUS Protocol 2: A Beginner’s Guide to Mastering Core Communication Elements

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Detailed Explanation of MODBUS Protocol 2: A Beginner's Guide to Mastering Core Communication Elements

Click to follow and never lose your way in learning! Last time, we ventured into the mysterious world of the MODBUS protocol and conducted a preliminary exploration of this “big player” in industrial communication. I wonder if you are still immersed in that wonderful learning atmosphere? If your knowledge isn’t solid, make sure to review … Read more

In-Depth Analysis of MODBUS Protocol: Understanding Serial Communication Transmission (What are the Differences Between MODBUS RTU and MODBUS ASCII?)

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In-Depth Analysis of MODBUS Protocol: Understanding Serial Communication Transmission (What are the Differences Between MODBUS RTU and MODBUS ASCII?)

Click to follow and stay on track in your learning journey! Last time, we delved into the core elements of the MODBUS protocol. I wonder if you have memorized those key points and successfully established a foothold in the world of MODBUS? If you haven’t fully digested the information yet, make sure to review it … Read more