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Introduction to Modbus Protocol
The following only discusses the content of Modbus protocol related to this article.
1.1 Data transmission mode of Modbus protocol
Modbus protocol defines two...[Details]
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Recently, I made a product using the STM8S003F3 chip. The product requires the use of TIM2 to output a PWM waveform on the PD2 pin. Installed the STM8-specific version of IAR, downloaded the STM8 l...[Details]
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1. Instrument connection and power supply
Use the power cord to connect the main power socket to the main power supply, and ground the instrument reliably (otherwise it is susceptible to interfer...[Details]
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Japanese peripheral accessories manufacturer Game Tech will release this multi-device compatible cooling fan "Gamers Mobile Cooler" on May 21. The reference retail price is 3960 yen (about RMB...[Details]
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Group photo of guests
Recently, the 20MW large-scale photovoltaic ground power station of Xuzhou GCL Photovoltaic Power Co., Ltd., China's largest solar photovoltaic power station with a t...[Details]
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Malaysian semiconductor company Unisem Bhd. will shut some factories for seven days after three employees recently died from Covid-19, dealing a new blow to chip supplies that automakers and other co...[Details]
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The Honor Magic4 / Magic4 Pro smartphones, which use Qualcomm Snapdragon 8 Gen 1 chipsets and powerful camera modules, have left a deep impression on many people. However, for consumers with li...[Details]
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The power supply rejection ratio (PSRR) has long been a great way to assess an amplifier’s ability to reject power supply noise at its output, but with the popularity and performance advantages of Cla...[Details]
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The functions of the arm-linux tool are as follows: arm-linux-addr2line converts program addresses into file names and line numbers. Give it an address and an executable file name on the command line...[Details]
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Photoelectric encoder can convert a mechanical geometric displacement into an electronic signal (electronic pulse signal or data string) through the photoelectric principle. It is a digital detection ...[Details]
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White light LEDs are voltage-sensitive devices. In actual operation, the upper limit of the current is 20mA. However, the current often increases due to various reasons during use. If no protective m...[Details]
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Here we introduce the method of using 51 single-chip microcomputer to drive stepper motor.
The driving voltage of this stepper motor is 12V, and the step angle is 7.5 degrees. One circle is 360...[Details]
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On May 19th, Google officially released the Android 12 Beta version today. Domestic mobile phone manufacturers also took quick action. Companies like vivo, Xiaomi, and ZTE announced the first batch o...[Details]
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In the last class, we already know that the symbols R7 and R6 in the program represent RAM units, which are used to store some data. Now let’s take a look at the meaning of other symbols.
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Function of the circuit
This circuit is a well-balanced constant current source with two outputs: current source and transducer. Under the condition of applying a voltage of 0~1...[Details]
Embedded System
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