As a type of industrial control computer, PLC has a structure similar to that of a regular computer; however, due to different usage scenarios and purposes, there are some structural differences. Hardware Components of PLC The basic structural block diagram of the PLC hardware system is shown in the figure. In the figure, the PLC … Read more
When it comes to control systems, many people seem to speak with great confidence, but when delving deeper, they become speechless about the definitions of controllers, PLCs, DCS, and FCS. After a brief introduction to the basic concepts, it feels like the conversation misses the point. Today, let’s discuss what DCS is. First, we can … Read more
Many users have questions about data types during the study of PLCs. This article will provide an interpretation of the basic data types in PLCs. The manual explains data types as follows: “Data types are used to specify the size of data elements and how to interpret the data. Each instruction parameter supports at least … Read more
Search on WeChat Technical Training 1. Bidirectional Movement of the Cart Use S7-200 to achieve automatic control of the cart’s bidirectional movement. The control process is as follows: press the start button, and the cart moves from the left to the right (and vice versa). When it reaches the right (or left) limit switch, the … Read more
1. Case Control Requirements 1. Equipment Used: FX3U-PLC (with 485-BD board), Mitsubishi Inverter. Control Requirements:The PLC communicates with the Mitsubishi E800 inverter to control the inverter’s forward rotation, reverse rotation, and frequency modification. 2. Hardware Wiring Instructions Open the inverter cover, and you will see a port on the circuit board that looks like a … Read more
Over 70,000 friends have followed the industrial control WeChat platform:Technical sharing,Learning exchange,Industrial control videos Solutions to RS485 Communication Port Damage in Siemens S7-200 PLC: 1. Internal RS485 Interface Circuit Diagram of S7-200 PLC: In the diagram, R1 and R2 are ordinary resistors with a resistance of 10 ohms, which serve to prevent excessive current from … Read more
Search on WeChat Technical Training >>>> Step One: Create a new project, enter the new project wizard, and select the model; >>>> Step Two: In the project new wizard, select “Standard I/F (RS422/485)” in the “Connection Machine Settings” under “I/F”; >>>> Step Three: Complete the touch screen settings as follows; After editing the touch screen … Read more
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
Siemens all-subject + TIA Portal + EPLAN electrical drawing video recordings are available for low-price packaging! Chuangkong Education Siemens All-Subject Class Course Introduction 01 Connection Quantity The S7-200 SMART CPU can connect to Siemens HMI devices that support the PPI protocol either through the integrated RS485 port or signal board, or through the integrated Ethernet … Read more
The 485 relay module uses the RS-485 communication protocol for data transmission, allowing independent or simultaneous control of multiple relay switch states through serial communication. This makes it easier to control multiple devices or circuits. It not only saves wiring costs but also features a compact size, strong anti-interference capability, long transmission distance, and high … Read more