Previously, I explained the power-on and startup control strategies for the EDC7 and EDC17 computer boards. If you haven’t seen it, you can click below to review. ↓↓↓↓↓↓ Detailed Explanation of Power-On Control Strategies for Various ECUs (Part 1) Today, I will explain another control strategy for startup using CAN communication signals. The heavy-duty truck … Read more
Introduction Recently, Siemens PLC prices have surged significantly, causing quite a stir in the industrial control sector. Not only have prices increased, but there are also shortages, forcing many to change their plans. It is said that chip replacements have been completed recently, and supply is expected to resume soon, along with price adjustments. This … Read more
Authors: Wang Jing, Chen Jianfeng, Zhang Lijie, Huang Jianguo, Source: Streams of Ocean Life 1. Introduction Underwater wireless sensor networks (UWSNs) utilize aircraft, submarines, or surface vessels to randomly deploy a large number of inexpensive miniature sensor nodes (ranging from hundreds to thousands) into the water of interest. These nodes form a multi-hop, self-organizing network … Read more
Hello everyone, today we will discuss the principles of RS485 communication, why matching resistors need to be added when the communication line is long, how to add them, how to adjust the value of the matching resistors, their impact on the output waveform, and why matching resistors should be added at both ends, among other … Read more
Search on WeChat Technical Training Source of the Pitfall: Poor Load Capacity of Passive RS232 to RS485 Converters If you are an industrial control engineer and often deal with communications, you will inevitably encounter the issue of poor driving capability of passive RS232 to RS485 converters. Previously, I worked on a product in a small … Read more
In RS485 communication systems, the choice of grounding method is crucial, directly affecting the system’s stability and anti-interference capability. Therefore, engineers need to choose the grounding method reasonably based on project requirements. Below we will discuss which grounding is suitable for the RS485 bus. 1. Single Point Reliable Grounding There can only be one grounding … Read more
The RS485 bus has advantages such as simple structure, long communication distance, fast communication speed, and low cost. It is widely used in industrial communication, power monitoring, instrumentation, and other industries. Due to the harsh industrial control environment, more interference coupling can occur in communication lines, affecting the reliability of the RS485 bus, and even … Read more
In engineering, the RS485 control line is often mentioned. What exactly is it? Today, let’s discuss the applications related to RS485. By delving deeper into RS485, you will find that there is indeed a lot of knowledge involved. We will choose some common issues that need to be considered in weak current systems for everyone’s … Read more
RS-232, RS-485, and RS-422 often encounter various serial communication issues during on-site debugging, such as communication connection problems between different ports like RS-232, RS-485, and RS-422. Typically, conversion between RS-485 and RS-422 is quite convenient. However, when communicating between RS-232 and RS-422 ports, if there are no other conversion methods available on-site, and mailing could … Read more
1. RS-232-C is a serial physical interface standard established by the Electronic Industry Association (EIA) in the United States. RS is the abbreviation for “Recommended Standard,” 232 is the identification number, and C indicates the revision number. The RS-232-C bus standard has 25 signal lines, including one main channel and one auxiliary channel. In most … Read more