01 Overview The traffic light module is equipped with red, yellow, and green LED lights, controlled by the R, Y, and G pins to turn the corresponding lights on and off. 02 Wiring Supply Voltage: 3.3V / 5V GND: GND, negative terminal GR: Control green light YE: Control yellow light RE: Control red light 03 … Read more
01 Overview The ultrasonic sensor is a type of sensor that uses ultrasonic waves to measure the distance to obstacles in front. This ultrasonic sensor has undergone many optimizations, providing stable performance and accurate distance measurement, and is compatible with LEGO small particle blocks. 02 Principle Humans can hear sounds due to vibrations of objects, … Read more
1. Wiring according to the diagram is the highest principle and cannot be overstated.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 … Read more
1. Input Circuit Wiring The input circuit is the port through which the PLC receives signals (for analog signals, it is generally a DC current of 0-40MA or a DC voltage signal of 0-10V). Input wiring refers to the external input devices (any passive contacts and NPN transistors with open collector) that connect to the … Read more
1. Input Circuit Wiring The input circuit is the port through which the PLC receives signals (for analog signals, typically 0-40mA DC current or 0-10V DC voltage signals). Input wiring refers to the external input devices (any passive contacts and NPN transistors with open collector) that connect to the input circuit, closing the circuit and … Read more
The essence of the PLC output terminal is a “switch” that controls the power supply of external circuits through the on/off state of internal relays, transistors, or thyristors. The different types of PLC output modules (relay type, transistor type, thyristor type) determine the types of components they can drive—this is the “underlying logic” of wiring. … Read more
Digital Input Digital inputs can be used to collect switch signals, commonly used components include: buttons, limit switches, proximity switches, photoelectric switches, etc. Wiring Methods for Buttons and Switches The PLC input points are opto-isolated, and when the light source of the opto-isolator emits light, the PLC can receive the signal. There are two wiring … Read more
1. Wiring according to the diagram is the highest principle and cannot be overstated.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 … Read more
How PLC Controls Stepper Motors 1. Introduction In the field of modern industrial automation control, the combination of PLC (Programmable Logic Controller) and stepper motors is widely used. Stepper motors have advantages such as precise position control, good reverse control, and stable speed control. As a reliable controller, PLC can provide precise pulse signals for … Read more
In industrial automation systems, sensors act as the “eyes” and “ears,” responsible for collecting key signals such as temperature, pressure, and position; while PLCs serve as the “brain,” receiving sensor signals and controlling actuator actions. The stability of their connection directly determines the reliability of the entire system. Today, we will provide a step-by-step guide … Read more