The RS-485 bus is widely used in communication, industrial automation, and other fields. In practical applications, one often encounters the question of whether to add pull-up and pull-down resistors and what resistance values are appropriate. Below, we will conduct a detailed analysis of these issues. 1. Why are Pull-Up and Pull-Down Resistors Needed? According to … Read more
The RS-232 bus is the most widely used serial interface bus in PC and industrial communication. The RS-232 interface was originally defined by the American EIA (Electronic Industries Alliance) as a standard for communication between computers and terminal devices. Due to its simple interface and high reliability for short-distance communication, it is widely used in … Read more
Overview of RS232 The RS-232 interface complies with the serial data communication interface standard established by the Electronic Industries Alliance (EIA). The original designation is EIA-RS-232 (abbreviated as 232, RS232). It is widely used for connecting computer serial interface peripherals. This includes connection cables as well as mechanical, electrical, signal, and transmission processes. The RS-232-C … Read more
These communication standards play different roles in industrial automation. Let me use a traffic system analogy to help you understand: Basic Positioning of the Four Standards 1. RS-232: A One-to-One Small Road Features: The earliest serial communication standard (1969) Point-to-point full-duplex communication (simultaneous two-way) Single-ended signal transmission (susceptible to interference) Typical transmission distance ≤ 15 … Read more
Recently, an engineer asked me how fast the highest toggle speed of an MCU can reach. I had heard about this topic years ago, but I had never actually tested it. This time, I took the opportunity to conduct some tests and discovered a lot of knowledge hidden within. For this test, I selected three … Read more
1. Product Overview The QT290G is an indoor gateway that adheres to the standard LoRaWAN™ protocol. It can connect to standard LoRaWAN terminals and facilitate bidirectional communication. The gateway connects to the company’s NS (Network Server) via a standard Ethernet interface and can be expanded to support 4G/LTE for data upload. It also supports local … Read more
CAN to CANopen –Gateway Converter–HD67042-A1 Author: Zou Wuyi Mobile185-020-77899 Email: [email protected] 1、Product Features:HD67042 is a CAN / CANopen converter. It has the following features: Triple isolation between CAN and power, CAN and CANopen, CANopen and power; Bidirectional information transmission between CANopen bus and CAN bus; Can be mounted on a 35mm DIN rail; Wide power … Read more
In the electric control system of oil drilling rigs, PROFIBUS serves as an advanced industrial communication protocol, providing a stable and reliable communication platform for the automation control of drilling rigs. PROFIBUS has been widely used in electric drive systems due to its mature technology, high reliability, and modular functionality. It can connect various sensors, … Read more
In modern industrial control, we often encounter situations where Modbus IO needs to connect to CANopen IO. How can we achieve interoperability between these two different communication protocols? PXB-6021 is a newly launched Modbus to CANopen protocol converter from Zhiyuan Electronics. It features 1 CAN channel, 1 100Mbps Ethernet port, and 1 RS485 port.This product … Read more
In recent years, with the gradual maturity of processes and IPs, the growth of 32-bit MCUs has been rapid, to the extent that 16-bit MCUs have been largely overlooked. Nowadays, when discussing embedded MCUs, it is either 8-bit or 32-bit, with very few 16-bit MCU product models available. So what about the situation with 8-bit … Read more