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
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
In order to achieve information collection and command output over as large a range as possible, we need to distribute the IO through a fieldbus. How can this be achieved? The answer is to connect several IO couplers on the communication bus, which communicate data with controllers such as PLC. The PLC and other controllers … Read more
Starting with Industrial IoT: My Practical Experience with Siemens SIMATIC IOT2040 Introduction Hello everyone, I am Lao Zhang. I have been working in the automation industry for over ten years, experiencing the entire process from traditional PLC control to the current transformation into Industrial IoT. Today, I would like to share my experiences and insights … Read more
Another newcomer is asking what a PLC is, how annoying! It’s already 2023, and there are still people who don’t know what a PLC is? This thing is the brain of the factory, without it, all the machines in the factory would stop working. Alright, since you are so sincere, let me explain it to … Read more
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
Today, let’s get straight to the point and discuss how to build a color sorting system using a PLC. Last month, I helped a beverage bottle recycling factory with a similar project, and the workshop technician said it was more than three times more stable than their previous system built with a microcontroller (and it … Read more