My Birth Serial communication is a commonly used communication protocol in industry, mainly RS232, RS485, and RS422. Any communication between two devices requires a communication protocol. Manufacturer A has developed a temperature sensor that uses the RS485 communication interface and defined Protocol A; Manufacturer B has also developed a temperature sensor, which similarly uses the … Read more
In the Inovance Inoproshop software, configure the RS485 master station for the AM500 series PLC (using Modbus RTU as an example). Inoproshop is developed based on Codesys, and its configuration method is more standardized and graphical. Below are the detailed steps: Part One: Hardware Connection (Same as AutoShop) Confirm the port: The RS485 port on … Read more
Hello everyone! Recently, a friend asked me why the Modbus communication between the PLC and the inverter was not working despite following numerous tutorials. I remember when I first started, I was just as confused, struggling with the wiring diagrams and making several mistakes in parameter settings before finally succeeding. Today, I will share the … Read more
Description: This article explains the application of MODBUS. Currently, the communication protocol between industrial control upper and lower machines predominantly uses MODBUS, highlighting the importance of machine-to-machine communication. 1. MODBUS System Framework Diagram 2. Application of MODBUS The underlying communication of MODBUS uses RS485 signals connected via twisted pairs, allowing for long transmission distances of … Read more
Title: The Concept of Bus Communication Control: Upgrading from RS485 to Two-Wire Bus First Paragraph: In modern industrial sites, the old model of the 485 bus often gives engineers headaches: polarity pairing, endpoint management, and long-distance transmission are easily interfered with, leading to high on-site maintenance costs and inflexible expansion. Faced with various industry scenarios … Read more
Serial Port refers to the serial interface, commonly known as the COM (Communication Port) interface. This is an “old” interface that was primarily introduced to connect computer peripherals, such as mice or modems. Since this interface typically appears in a 9 pin format, it is often referred to as the 9-pin serial port or DB9 … Read more
RS232 and RS485 are two popular serial data communication protocols established by the Electronic Industries Alliance (EIA) for communication between systems and peripheral devices. Although they have been largely replaced by the USB standard on the PC side, they are still widely used in the industrial control field. What is the RS232 Protocol? The RS-232 … Read more
▼Click the card below to follow our official account▼ TTL, RS232, and RS485 are representations of logic levels, which are three different voltage standards for serial communication. TTL TTL: Full duplex (5V system, logic 1: 2.4V–5V, logic 0: 0V–0.5V). TTL refers to Transistor-Transistor Logic circuits. Many “USB to TTL” modules available on the market are … Read more
【Introduction】 When faced with a wiring scenario of 100 meters in a workshop, should you choose RS232, RS422, or RS485? The core differences among the three are immediately apparent: RS232 supports only 15 meters of point-to-point communication, RS422 can reach 1200 meters but is limited to unidirectional transmission, while RS485, with its 1200-meter transmission distance … Read more
Click the blue text Follow us UART (Universal Asynchronous Receiver/Transmitter) The full name of UART is Universal Asynchronous Receiver/Transmitter. UART is an asynchronous transceiver, a key module for asynchronous communication between devices. It handles the serial/parallel and parallel/serial conversion between the data bus and the serial port, and specifies the frame format. As long as … Read more