rs485 pinout

below.Figure 1:opa857 Block diagramThere is three distinct blocks in this diagram: Transimpedance Block Reference Voltage Block Current mirror block (test block) The transimpedance block has the selectable gain configurations:4.5k? and 18.2k? When taking into consideration the attenuation due to a 500? Load. Since There is only one switch, and the parallel combination of the RF2 with RF1 is 4.5k?. The schematic is simplified to ensure, the resulting value is represented cl

the open source community. Its shortage is only open software source code, and not open hardware schematic, but this does not affect the creators of its favor.7.udoo-Freescale i.mx6 ARMLike the Raspberry Pi, Udoo is an arm-architected Linux board, and a second ARM processor is installed on the board to emulate the Arduino Due.The Udoo has a dual-core and four-core two-version arm cortex-a9 CPU with an arm sam3x processor like the Arduino due. The Udoo also includes OpenGL accelerators, 54 digit

STM32 UART Single-line half-duplex mode (cube version) 1. IntroductionIn some cases, a three-wire serial communication is required (only one of the signal lines), which requires a single-line half-duplex mode for communication. In this case, in the process of data protocol transmission, the signal end needs to switch back and forth in the input and output mode. Alternatively, the transmit and interface of the control port can be short-connected. In this case, STM32 provides the Half-duplex funct

bit reserved, low 16 can be read at any time, 1 means the corresponding configuration bit is activated latch, 0 means can be activated, activation is a fixed write shunThe order. Latches can not be used indiscriminately, if a function register of a port is locked, then the function of the port can not be changed before the next system reset, which is advantageous in some cases, especially if the program is heavyWhen defining the functionality of certain GPIO ports, it is necessary to ensure tha

1. In the pinout option, all the system used pins are configured, including two osc,jtag/swd, BOOT0/1, so that all unused pins can be set to analog, otherwise it will not download the program.2. For the JTAG has been configured for other functions, but unable to write the program, the boot0 changed to 1 and then press reset and then the emulator is good, because boot0 changed to 1, does not start from flash, JTAG pin will not be initialized, When usin

Iis-iis Concept Related1. IIS (Inter-ic Sound bus), also known as I2S, is a serial digital audio bus protocol proposed by Philip. Currently, many audio chips and MCUs provide support for IIS. The IIS bus processes only sound data. Other signals, such as control signals, must be transmitted separately. To keep the chip's pinout as small as possible, IIS uses only three serial buses. These three lines are: data lines that provide time-sharing, field sel

3x4007 Diodes 1x Voltage Regulator 78l05 2x ceramic capacitors 100nf 4x electrolitic capacitors 1 microf 2x zenner diodes 2v7 1x I. c. max3232 1x female 9 pin Serial PC conector 1x conector phone 3x4148 Diodes 1x resistor 1 K 1x Voltage Regulator 78l05 2x ceramic capacitors 100nf 4x electrolitic capacitors 1 microf 2x zenner diodes 2v7 1x I. c. maxcompute 1x female 9 pin Serial PC co

In industry control, industrial computer (generally based on Windows platform) often need to communicate with intelligent instruments through the serial port. Serial communication is convenient and easy to use and widely used. Under normal circumstances, industrial control computer and the intelligent instruments through the RS485 bus communication. RS485 communication mode is Half-duplex, only by the indu

Use PHP to control MODBUS-RTU devices, phpmodbus-rtu Devices In industrial control, Iot, intelligent projects, MODBUS-RTU equipment is one of the most common types, it uses RS485/232 bus communication mode, MODBUS-RTU Protocol has a long history of mature and reliable. What we are talking about today is the use of PHP language application OHSCE framework for universal control of MODBUS-RTU equipment.I. PreparationPHP 5.4 and above OHSCE V0.1.26 (FIX2

Tag: Send data false Run program design RS485 file Application device nbspIntroduction of C # serial port and implementation of simple serial communication programWeekend, nothing to do, write a simple serial communication tool, also is this weekend has come, nonsense, direct to the themeIntroduction of Serial portSerial interface, also known as serial communication interface or serial communication interface (usually referred to as COM interface), is

(rs232/rs485), USB port, GPIO,I2C and other Devices communication interface Also provides JavaScript layer device call API, provide standard SDK and demo program source code, to facilitate customer focus on product function development, rapid formation of products.Industrial Control solutions for the Internet of thingsAndroid Industrial based ZigBee solution, provide serial port (rs232,rs485, etc.)/IO/IIC/

connectorDip switch:3 bit Dial switchA/d:1 RoadJtag Interface: OneCamera Interface: 1 (can support 5 million camera)gpio/can/rs485 interface: 1-way CAN 1-Way RS485 interfaceUser key:4 function keysIRDA:1 Infrared Integrated receiver headMIC: Mic Input supportedPhone: Support headphone outputSerial port: 2 serial portsUSB Host:3 USB Host, support USB2.0 protocolTF card:1 a standard TF card interface3G modul

1.5mmCpuarm cortex-a9 Four-core s5p4418 processor 1.4GHzMemory 1GB DDR3 (2GB optional)Storage 16GB EMMCPower management AXP228, support for Dynamic FM, ultra-low power consumptionOperating voltage DC 5V power supplySystem support Linux, Android and other systemsAngle extension 4418 function All out, four groups of connectors a total of 320 pin pinOperating temperature-25 ℃ to +80℃Backplane parametersSize Bottom PLATE: 125mm * 190mmPower DC power input connector, 5V/2A power inputSwitch power co

-station and non-automatic multi-station modes. Event registers are mainly used to determine whether a receiving or sending interruption occurs. Shield registers are mainly used for receiving and sending enable. Therefore, for the UART protocol, the above registers are very important, they mainly complete the baud rate configuration, protocol selection, sending and receiving judgment and processing. UART RS232 Com UART is the abbreviation of universal asynchronous transceiver (asynchronous s

Serial Port is also called "Serial Port". It is mainly used for serial data transmission. Common RS-232 with general computer applications (using 25-pin or 9-pin connectors) and half duplex RS-485 for industrial computer applications with full duplex RS-422. Serial interface according to electrical standards and protocols, including RS-232-C, RS-422, RS485, USB and so on. RS-232-C, RS-422 and RS-485 standards only regulate the electrical characterist

I. Basic knowledge1. Serial communication and parallel communication: More and more serial communication is used at present. The advantage of serial communication is that the connection is simple, the transmission distance is far, the disadvantage is slow transmission speed. 2. Serial communication: Divided into synchronous communication and asynchronous communication; asynchronous communication means that the sending and receiving devices use their own clock control to transmit and receive data

pulse amplification circuitThe Photoelectric Coupler is used in digital circuits to enlarge the pulse signal.(5) Application in Linear CircuitsLinear photocoupler is used in Linear Circuits and has high linearity and excellent electrical isolation performance. This type of circuit is generally used to simulate signal transmission, such as switching power supply circuit. (6) applications in other special scenariosThe Photoelectric Coupler can also be used in high-voltage control, replacing trans