Hello everyone, good evening! How have you all been recently? Has the pandemic affected you in any way? Today is still a technical article: Siemens PLC Communication – Modbus RTU Communication – New Features of S7-1200 Modbus (RTU) Instructions V4. Modbus RTU Communication: S7-200 smart Modbus RTU master station communication (√) S7-200 smart Modbus RTU … Read more
1. What is MODBUS? 1. Basic Concepts MODBUS is a communication protocol initially advocated by MODICON (now a brand of Schneider Electric). It has gradually been recognized as a standard communication protocol through practical applications by most companies. As long as data communication or transmission is conducted according to this protocol, different systems can communicate … Read more
The JLINK driver is installed, and the device manager recognizes it, but the options for SW and JTAG in MDK are grayed out (this is not an issue with JLINK). Therefore, downloading and simulation cannot proceed. I tried uninstalling the JLINK driver and re-installing it, but that didn’t solve the issue, so I decided to … Read more
1. ULINK2 Emulator ULINK2 is the latest emulator from ARM designed for use with RealView MDK. It is an upgraded version of the ULINK emulator. ULINK2 not only has all the features of the ULINK emulator but also adds support for Serial Wire Debug (SWD), return clock support, and real-time agents. Development engineers can easily … Read more
Everyone knows that Altera’s FPGA can be configured using the EPCS flash memory configuration chip, and there are two methods to program the EPCS chip. One method is to directly program the POF file through the AS port, which requires a separate 10-pin socket in the circuit design. The other method is to use the … Read more
RTL is an essential part of IC system design. How important is RTL design? Essentially, the logical functions of IC systems are implemented in RTL, so many IC projects are closely tied to RTL design. Today, let’s discuss how to excel in RTL design. Generally, once the preparatory work and product requirements are determined, engineers … Read more
Huang Xin, Song Boyuan, Guo Xiaomin, Lin Jieqin (Guilin University of Electronic Technology, School of Electronic Engineering and Automation, Guilin, Guangxi 541000) Abstract: In order to utilize the traditional JTAG interface for testing and controlling a large number of specific IP testing instruments within the SOC, a universal and portable single-layer network testing method based … Read more
Problem Description After downloading the elf file, a message box pops up as shown in Figure 1, indicating that there is a problem with the software operation. However, the software runs correctly; for instance, the VGA interface displays images normally, as shown in Figure 2. Moreover, this error does not appear in Debug mode. Figure … Read more
It is common to see beginners of MSP430 asking questions about connecting MSP430 JTAG to the target board in forums. Here, I summarize the information to help new MSP430 learners clear their doubts. The JTAG connection of MSP430 mainly has two methods: the 4-wire JTAG method (including TDO, TDI, TMS, TCK four standard JTAG signals) … Read more
1. For Altera FPGA, when using Nios II, there are four types of files that need to be downloaded: .sof file, .pof file, .jic file, and .elf file. 2. The .sof file and .pof file are usually referred to as FPGA “hardware” or “firmware” files, generated by design compilation in Quartus II. The source file … Read more