01 Output Forms of Sensors 1. Digital Output Type Digital output primarily includes three forms: RS232, RS485, and wireless transmission. The specific digital output type is chosen based on the actual communication distance and the complexity of the terrain. RS232 output is generally suitable for short-distance transmission within 15 meters and has weak electromagnetic interference … Read more
Learning about microcontrollers is a long and somewhat painful process. Especially for beginners, it is difficult to form a systematic learning framework when various types of knowledge are incomplete in the early stages. This article aims to provide a thought process and list some essential foundational knowledge before getting into microcontrollers. 1. There are only … Read more
Click Tech Training Top, delivering to you daily at 7:30 AM What are RS232, RS485, UART, serial ports, COM ports, USB ports, and TTL? Do you understand their relationships? First, we need to distinguish between timing standards and logic level standards. Timing standards refer to the logical values (0 and 1) corresponding to actual voltage … Read more
Click the card above to follow for more information 1. Why Do We Prefer Serial Communication? When working on microcontroller products, the most commonly used method is serial communication. For any microcontroller peripherals, those with serial port functionality are prioritized, such as Bluetooth modules, WIFI modules, 4G modules, electric meters, and displays. Why do we … Read more
Many students learning embedded systems often feel confused by various protocols and can’t distinguish their functions. Today, I will clarify the five commonly used protocols in embedded systems, packed with useful information. Without further ado, let’s get started! 01 UART Communication Protocol 1. Principle The data packet in serial communication is transmitted from the sending … Read more
For more exciting content, follow “PLC Enthusiast” Often, technicians encounter the issue: why can’t my touch screen communicate with the PLC? For example, here are two common problems: 1. Weintek touch screen cannot communicate with Siemens PLC, always indicating no response from the PLC. How should it be set up? Solution Approach: Ensure you set … Read more
It is common for technicians to encounter the issue: why can’t my touch screen communicate with the PLC? Here are two problems that might occur: 1. Weintek Touch Screen Cannot Communicate with Siemens PLC, Always Prompting No Response from PLC. How Should I Set It Up? Solution approach: You need to set the same baud … Read more
The following example connects the MT6103IP touch screen to a Panasonic PLC; other brands of PLCs can be referenced. 1. Determine the connection scheme as follows: 2. Hardware wiring Below are the wiring terminals of the touch screen, which has 9 pins, allowing for one group of RS232 and another group of RS485. 1) RS232 … Read more
In the previous article “UART Communication Interface Protocol – UART (I) Protocol Basics”, we briefly and meticulously describedUART configuration items and the signal timing of the communication process. This article will continue to introduce some interface specifications used by theUART interface under different electrical characteristics. 1. Introduction In fact,UART only defines the signal timing without … Read more
UART, I2C, RS485… These communication protocols are commonly used, but their explanations can be ambiguous. I feel it’s necessary to organize them to consolidate and differentiate. The article is a bit long, so I suggest saving it for later reference. UART stands for Universal Asynchronous Receiver-Transmitter. The UART port refers to a type of physical … Read more