Search on WeChat Technical Training PLC Programming Algorithm (1) In PLC, there are mainly three types of quantities:Switching Quantity, Analog Quantity, Pulse Quantity. Understanding the relationship between these three will allow you to master PLC proficiently. 1. Switching Quantity, also known as logical quantity, refers to only two values, 0 or 1, ON or OFF … Read more
Introduction PLC comes in various sizes, hence its control range can also vary. Smaller PLCs might only control a single device, or even a component at a site; larger ones can control multiple devices, an entire production line, or even an entire factory. It can be said that PLCs are indispensable in both large and … Read more
Search on WeChat Technical Training Can learning PLC be beneficial? Yes! It can lead to projects and income! So how can one undertake a project? What skills and knowledge are required? Today, let’s discuss these topics. Different PLC models carry different project scopes. Siemens S300/400 PLCs and S1500 PLCs are considered medium to large PLCs, … Read more
For those just starting with PLCs, mastering the programming language and understanding instructions is one of the fundamental conditions. Regardless of how different your programming habits are from others, you must learn this element of instructions, as programming cannot do without its components. Below, let’s take a look at the extent of the application of … Read more
1. Used for Switch Control PLC has a strong capability to control switch signals. The number of controlled input and output points can range from a few dozen to several hundred, or even thousands, and it can control tens of thousands of points. As it can connect to virtually unlimited points, the logic problems it … Read more
Click the blue text Follow us As the core of automation control systems, Programmable Logic Controllers (PLC) play a crucial role in modern industry. So, in which fields can talents with PLC skills find employment opportunities? What are the applications of PLC across various industries, and what is the employment outlook for PLC professionals? Applications … Read more
PLC Programming Algorithm (1) In PLCs, there are three main quantities:Switching Quantity, Analog Quantity, Pulse Quantity. Once you understand the relationship between these three, you will master PLCs proficiently. 1. Switching Quantity also known as logical quantity, refers to two possible values, 0 or 1, ON or OFF (Switching quantities only have two states 0/1, … Read more
Currently, there are 5 standard programming languages for PLCs, including graphical programming languages and textual programming languages. Graphical programming languages include: Ladder Diagram (LD); Function Block Diagram (FBD); Sequential Function Chart (SFC). Textual programming languages include: Instruction List (IL) & Structured Text (ST). The programming languages of IEC 1131-3 were formed based on the reasonable … Read more
01 Start, Self-locking, and Stop Control PLC Circuit and Ladder Diagram Start, self-locking, and stop control are the most basic control functions of PLC. These can be implemented using output instructions (OUT) or set/reset instructions (SET, RST). 1. Using Coil Drive Instructions for Start, Self-locking, and Stop Control The coil drive (OUT) instruction functions to … Read more
1. Contact and Coil Instructions Programming Principles of PLC Ladder Diagram Language 1. The ladder diagram consists of multiple rungs, each coil can form a rung, and each rung has multiple branches, representing a logical equation; 2. The relays, contacts, and coils in the ladder diagram are not physical but are bits in the PLC … Read more