alarm configuration

Overview of the Profibus-DP Communication Protocol

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Overview of the Profibus-DP Communication Protocol

1. Overview PROFIBUS-DP, where DP stands for Decentralized Periphery, is a type of computer electronic component. It features high speed and low cost, used for communication between device-level control systems and decentralized I/O. It, along with PROFIBUS-PA (Process Automation) and PROFIBUS-FMS (Fieldbus Message Specification), constitutes the PROFIBUS standard. 2. Basic Information Specifications The PROFIBUS-DP protocol … Read more

Using Common Configuration Files in VS Projects with C++

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Using Common Configuration Files in VS Projects with C++

When working on a solution in Visual Studio (VS) that contains multiple projects, it is common to encounter situations where multiple projects need to include the same configurations, such as C++ version, additional library directories, additional include directories, etc. This article provides methods to include common configuration files to avoid repetitive configurations. 1. Configure Third-Party … Read more

Modifying Default IP Address During OpenWrt Compilation

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Modifying Default IP Address During OpenWrt Compilation

Modify the following file openwrt/imx_openwrt/package/base-files/files/bin/config_generate as follows: case "$protocol" in static) local ipad case "$1" in #lan) ipad=${ipaddr:-"192.168.1.1"} ;; #*) ipad=${ipaddr:-"192.168.$((addr_offset++)).1"} ;; lan) ipad=${ipaddr:-"10.168.103.129"} ;; *) ipad=${ipaddr:-"10.168.$((addr_offset++)).1"} ;; esac netm=${netmask:-"255.255.255.0"} uci -q batch <<-EOF set network.$1.proto='static' set network.$1.ipaddr='$ipad' set network.$1.netmask='$netm' EOF [ -e /proc/sys/net/ipv6 ] && uci set network.$1.ip6assign='60' ;; The actual effect is OK: … Read more

Raspberry Pi Troubleshooting Guide 1: Cost-Saving Method – Zero HDMI Dependency, Easy Configuration of Raspberry Pi 5 Official Touch Display 2

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Raspberry Pi Troubleshooting Guide 1: Cost-Saving Method - Zero HDMI Dependency, Easy Configuration of Raspberry Pi 5 Official Touch Display 2

Background of the Issue Initial State: After re-flashing the Raspberry Pi system, the Touch Display 2 only shows the cursor and does not display the full desktop. During this process, a segmentation fault in libc-bin caused system instability. Prerequisites: Core Hardware List for Raspberry Pi Project 1. Raspberry Pi 5 ▪ Model: Raspberry Pi (16GB) … Read more

A Step-by-Step Guide to Configuring HTTPS Certificates for Nginx on Linux Servers – Easy for Beginners!

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A Step-by-Step Guide to Configuring HTTPS Certificates for Nginx on Linux Servers - Easy for Beginners!

Start of the Main Content Meeting is fate, follow ⭐ to not miss out – sharing practical tutorials and tips every day. In today’s world where internet security is increasingly important, configuring HTTPS certificates for websites has become a necessity. This article will take the Nginx server as an example and explain in detail how … Read more

A Checklist of Key Items to Check Before and After Restarting a Linux System

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A Checklist of Key Items to Check Before and After Restarting a Linux System

Here is a professional version of the ✅ “Linux Pre-Restart Checklist” that is very useful in production environments. 1 ✅ Linux Pre-Restart Checklist 1. Current system load and resource usage uptime / top / htop / vmstat Record the current CPU, memory, and Load Average to compare if there is any improvement after the restart. … Read more

Wiring Method for Two-Wire Intercom in IoT (Replacing the Intercom)

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Wiring Method for Two-Wire Intercom in IoT (Replacing the Intercom)

This configuration requires the following for three-party calls: main unit, extension, power supply, room phone, and cabin intercom.For five-party calls, the following is required: main unit, extension, power supply, room phone, cabin intercom, and top cabin sub-unit.Bottom cabin sub-unitThe two configuration methods are shown in the images below

SL8X Multitool Project Configuration

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SL8X Multitool Project Configuration

Create a project using Multitool 8.2Add an SL8X controller, making sure to select “SL8X1-01” hereThis is not mandatory; I just don’t want to store too many EPEC_CU1 files on my computer.Add a 3724 controller and connect the CAN1 port of the SL8X to the CAN1 port of the 3724 on the same network.In the CAN … Read more

Tutorial for Installing Windows Server 2022 on ESXi Virtualization

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Tutorial for Installing Windows Server 2022 on ESXi Virtualization

Tutorial for Installing Windows Server 2022 on ESXi Virtualization ESXi Configuration Create & Register Virtual Machine Fill in Name and Select Operating System Type Select Storage Location Configure CPU, Memory, Storage and Mount ISO Image Install System Power On After powering on, quickly press any key to enter the installation program [it is recommended to … Read more

Default HTTP Request Values in JMeter

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Default HTTP Request Values in JMeter

Function Introduction When editing a test plan in JMeter, if there are multiple Sampler requests with the same parameters and settings, such as the protocol, IP address, and port number of the service being requested, configuring each Sampler individually would increase redundancy and workload. Additionally, if the server address changes in the future, it would … Read more