Profibus Bus Technology 1. What is Profibus Fieldbus? The fieldbus is a serial, digital, multipoint communication bus installed between field devices/instruments in the production process area and the automatic control devices/systems in the control room. Of course, the production process includes both continuous and batch production. Profibus fieldbus is one of them. In simple terms, … Read more
Click the blue text to follow us PROFIBUS (Process Field Bus) is a widely used communication protocol in the field of industrial automation. It was developed by Siemens in the early 1980s and standardized in the 1990s. PROFIBUS enhances the level of automation in industrial production by enabling efficient and reliable communication between devices. 1.Development … Read more
Modbus Communication Programming Example (1) Recently, I have been writing about Modbus and fieldbus introductions separately, which are more conceptual and do not involve specific examples. Many readers may still find it insufficiently detailed. Since I am no longer engaged in specific programming debugging, providing direct examples is quite challenging. I referenced some materials from … Read more
First, we will introduce our hardware preparations. 1. A weighing instrument that supports the Modbus protocol Weighing instrument that supports the Modbus protocol 2. Set the communication parameters of the instrument You can adjust according to your requirements, as long as it matches the PLC side. Baud rate: 9600 Data format: 8n1: 8 data bits … Read more
I have previously worked with microcontrollers and various models of frequency converters including Mitsubishi D700, Siemens G120, Omron 3G3JZ, Panasonic VF200, Delta VFD-M, Xinjie VB3, Yonghong FID-B10, Chande IS7, Inovance MD500, Invt Goodrive10, Schneider ATV12, Haiwei E, Holley HGD303, Taian F510, Hexin F2A, Rockwell PowerFlex-4, Fuji FRENIC-VP, Boke CV20, Yaskawa A1000, and Weichuang Artrich-AR60T. Most … Read more
Various Modbus debugging tools that require no installation, capable of easily resolving basic Modbus issues. Users in need can click to read the original article for download; it is recommended to use a PC.
Click↑↑Technical Training, follow and pin it to subscribe for free long-term Over 200,000 industrial control professionals follow this WeChat platform: technical sharing, learning exchange, industrial control videos Communication Materials:1) Two PLCs, namely the 200SMART CR60 and SR20;2) Two DP connectors (6ES7972-0BX12-0XA0)3) Several connecting wires (for PLC power and communication)Verification Content:Set: CR60 PLC as the master … Read more
Shortly after the end of the Cold War, the world-renowned firearms manufacturer SIG designed a suitable close-quarters battle rifle for the Swiss special police forces. This led to the creation of the SIG 552 assault rifle, nicknamed “The Commando.” The SIG 552 assault rifle was launched in 1998 and is the shortest model in the … Read more
The board is ready, and the MCU is soldered, but the SWD cannot connect, and the program cannot be downloaded. What should I do? This issue seems to occur frequently, so I would like to share some recent cases I encountered. 1) Case 1: Engineer A made 5 boards, but none could connect. After confirming … Read more
Problem Description In the Zynq 1.0 version chip, I attempted to program (erase/write/read) the QSPI in the original mode, but the code hangs when booting in JTAG mode. Solution When the QSPI flash is in the original mode, MIO[5] is connected to the HOLD signal. To ensure that the HOLD signal is not held low … Read more