electrical wiring

Principles of PLC Control Cabinet Design: Wiring Layout, Connection Diagrams, and Schematics

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Principles of PLC Control Cabinet Design: Wiring Layout, Connection Diagrams, and Schematics

1. Wiring according to the diagram is the highest principle. First, before wiring, one must carefully read the drawings and fully understand the designer’s intentions, rather than relying on personal so-called rich experience. If any unclear or contradictory points are found, one should immediately contact the designer for confirmation before proceeding with the wiring construction. … Read more

Setting Up a PLC Programming Environment: Configuration and Use of PLC Hardware

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Setting Up a PLC Programming Environment: Configuration and Use of PLC Hardware

After two hours of on-site rush, I found that the PLC program just wouldn’t download! This was a common predicament I faced when I first started in the industry. If you are about to get into PLCs, make sure to get the “environment setup” right to avoid unnecessary detours. Today, let’s discuss the configuration and … Read more

How to Wire Mitsubishi FX Series PLC and Download Programs via RS-232

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How to Wire Mitsubishi FX Series PLC and Download Programs via RS-232

Today, I will briefly introduce how to wire the Mitsubishi FX series PLC and how to download programs via RS-232. This simple explanation will help you quickly communicate with the PLC and run your own written programs. How to Communicate via RS-232 1. First, install the driver for the RS232 data cable: (1) Plug in … Read more

How to Connect Barrier Terminal Blocks to a Circuit Board

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How to Connect Barrier Terminal Blocks to a Circuit Board

Click the blue text above to follow us for more exciting content 1) Remove 5~8mm of insulation from the wire, then insert the exposed wire into the terminal block. 2) Use a screwdriver to tighten the screw at the top, and pull on the wire a few times to check if it comes loose. 3) … Read more

How to Wire Sensors in PLCs? Master These Two Points, It’s Actually Quite Simple

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How to Wire Sensors in PLCs? Master These Two Points, It's Actually Quite Simple

In factories, different devices are designed by manufacturers, and there are many types of PLC control systems. The types of sensors used also vary; some use NPN type, while others use PNP type. Therefore, many electricians feel confused when they see NPN and PNP sensors and do not know where to start. Here, I will … Read more

Detailed Explanation of PLC Input and Output Modules: How to Properly Wire and Configure?

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Detailed Explanation of PLC Input and Output Modules: How to Properly Wire and Configure?

Hello everyone! Today, we will discuss the basic knowledge of input and output modules in PLC programming, especially wiring and configuration. This is the most critical step in learning PLCs because only with correct wiring and configuration can the PLC “understand” your commands and reliably control field devices. Even if your program is perfect, if … Read more

CANopen Communication for PLCs: Network Interconnection for Various Industrial Devices

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CANopen Communication for PLCs: Network Interconnection for Various Industrial Devices

It is common to encounter situations in industrial settings where devices have dozens of sensors and actuators, each requiring individual wiring to the PLC. This not only takes a long time to wire but also increases the chances of errors, making troubleshooting particularly challenging later on. Today, let’s discuss AS-Interface bus technology, a fieldbus solution … Read more

Modbus 485 Bus Wiring Methods

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Modbus 485 Bus Wiring Methods

Connection Method 1: Not recommended, interference leads to continuous bugs. Solution 2: Connect the passive termination resistor as shown in the figure: recommended. Connection Method 3: Connect 5V active termination resistor: Incorrect Connection Method: Error 1: The bus must be connected in a linear fashion, not in a star configuration. Error 2: Missing termination resistors. … Read more

Understanding PLC and Inverter Communication Wiring

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Understanding PLC and Inverter Communication Wiring

The relationship between PLC and inverter is one of inclusion, where both can execute specific commands to control electric motors. The PLC is a programmable hardware for executing programs, while the inverter is one of the devices it can control. However, the PLC’s scope is broader than that of the inverter, enabling it to control … Read more

How to Use a Multimeter to Identify Neutral and Ground Wires

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How to Use a Multimeter to Identify Neutral and Ground Wires

Distinguishing between neutral and ground wires: The ground wire is required to be yellow/green striped during installation, so it can be identified by its color. The neutral wire is generally blue. 1. Set the multimeter range switch to the AC voltage setting, which should be available on all multimeters. 2. The range should be from … Read more