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Course Introduction："Self-study IT Network Linux Load Balancing Video Tutorial" mainly implements Linux load balancing by performing script operations on web, lvs and Linux under nagin.

Course Advanced  16922

Course Introduction："Shangxuetang MySQL Video Tutorial" introduces you to the process from installing to using the MySQL database, and introduces the specific operations of each link in detail.

Course Advanced  10629

Course Introduction："Brothers Band Front-end Example Display Video Tutorial" introduces examples of HTML5 and CSS3 technologies to everyone, so that everyone can become more proficient in using HTML5 and CSS3.

Course Introduction：How to write PLC program answer Programming is the most critical issue in PLC application. The basic idea of ​​PLC programming is to design the logical relationship between input and output signals according to the requirements of the equipment to achieve the expected working process. In order to achieve this goal, there are several common methods that can be adopted. A simple and commonly used method is to target the process, analyze the starting conditions and limiting conditions of each process, and then write the corresponding PLC program based on these conditions. In this way, the PLC program for all processes can be completed step by step, thereby completing the design of the entire PLC program. Another commonly used method is the state transition method. By analyzing the state transition conditions of the equipment, each state transition is defined as a subroutine, and these subroutines are connected in a certain order.

2024-01-25 comment 0  739

Course Introduction：1. PLC fault diagnosis and repair? 1. PLC fault type. 1. External equipment failure. External devices refer to various switches, sensors, actuators, loads, etc. that are directly connected to the PLC working process. Failure of these devices will directly affect the control function of the PLC system. Therefore, when repairing PLC, you must first distinguish whether it is an external device failure or a failure of the PLC itself. 2. System failure. 1) System fault is a global fault that affects the operation of the PLC system. 2) PLC system faults can be divided into fixed faults and accidental faults. 3) After a failure occurs, the system can be restarted to return to normal, which is an accidental failure. If the system cannot be restored after restarting, but the hardware or software needs to be replaced before the system can return to normal, it is considered

2024-07-28 comment 0  1132

Course Introduction：Step 1: Open the Mitsubishi PLC programming software and click Project->Create New Project in the software menu bar. Step 2: Select the type of plc and the series of plc according to your own usage. Select Ladder Diagram. Step 3: Such a project is created. What is shown in the project is the editing page of our ladder diagram. Step 4: Click the mouse on the area of ​​the ladder diagram to indicate that this area is selected and graphic components can be placed here. Step 5: Click on the graphic component to be placed and enter the corresponding terminal information. Step 6: The right side needs to be received by the output terminal and cannot be empty. End ends by default. Such a simple ladder diagram is drawn.

2024-06-06 comment 0  639