The ModBus frame format is: slave address (1 byte), function code (1 byte), start address (2 bytes), data length (2 bytes), CRC code (2 bytes) Then the data transmission mode is specified as serial as...
Please recommend it to me. If you have it for sale, please sell it to me directly, so that I don’t have to look for it everywhere, which is very tiring....
I would like to ask the following questions: 1. What is the function of the part composed of C1, C2 and R1 in the figure? 2. What is the function of transistors Q1 and Q2? Thank you!...
Another question: What kind of transistor is used to drive this relay? How to explain the words "10A/28VDC, 5A/220VAC, DC5V" on it? It has no requirements for the pull-in current?...
1 Introduction
The high temperature tester is mainly used for temperature tracking measurement and data acquisition during the heating process. By systematically analyzing the test data, the...[Details]
All electronic design engineers and scientists have performed electrical signal analysis, or signal analysis for short. Through this basic measurement, they can gain insight into signal details and...[Details]
1. Introduction
At present, most lighting equipment still uses traditional energy for lighting. Making full use of solar energy as the energy supply for lighting equipment is of great si...[Details]
Overview:
This paper introduces a method of connecting a CAN-bus network with Ethernet to form a medium-sized remote monitoring/data transmission network.
CAN (Controller Area Network) is ...[Details]
Many battery-powered systems require a visual indicator to show when the battery needs to be replaced. LEDs are commonly used for this purpose, but they consume at least 10mA of current. This con...[Details]
Today, with energy becoming increasingly scarce, the utilization of natural energy has become the focus of people's attention. Among various natural energies, the endless solar energy is highly fav...[Details]
Since AC mains power may experience power outages, voltage sags and surges, continuous undervoltage and overvoltage, and frequency fluctuations during supply, these factors will affect the continuous ...[Details]
Introduction
In industrial control, speed measurement is often required. Generally, a contact tachometer is used. This tachometer must be placed against the center of the shaft to measure. It...[Details]
There are many types and styles of digital voltmeters in design and development. Traditional digital voltmeters have their own characteristics. They are suitable for manual measurement on site. Tra...[Details]
1 Introduction
Automatic Test
System The ATS (Automatic Test System) integrates all the stimulus and measurement equipment required for testing.
The computer
efficiently comp...[Details]
LonWorks fieldbus technology is widely used, for example, in intelligent buildings, industrial control, environmental protection, etc. Echelon's LonWorks system has been used in the products of tho...[Details]
TPMS is the abbreviation of "Tire Pressure Monitoring System". It is mainly used to automatically monitor the tire pressure in real time when the car is driving, and to alarm for tire leakage and l...[Details]
With the development and application of liquid crystal display technology, more and more developers want to use liquid crystal screens to display Chinese characters in the instruments and equipment th...[Details]
For the past
15
years, many have predicted that
the
8
-bit microcontroller would soon be gone. However, this was one of the most miscalculated predictions in the el...[Details]
System Block Diagram
The system uses DSP56F826 chip as the core control module and CMOS digital image sensor chip. The image acquisition resolution can reach 640×480 pixels. When high-re...[Details]