rs485 pinout

signal is modulated to a high-frequency carrier by a wide-band modulation device, enables multi-channel signals to be transmitted upstream in the coaxial cable and transmitted to the main control room for single-channel or Multi-Channel Video modem to call up standard video signals; the front-end lens, cloud platform, and other control signals are modulated by the data carrier through the PSK data modulation, and modulated to the 38 MHz carrier over the coaxial cable for downlink transmission,

Integrated Wiring System should be open. On the one hand, the Integrated Wiring System can adapt to different functional requirements, while supporting the corresponding equipment of different manufacturers.3) practicality. The Integrated Wiring System can adapt to the development of technology in the present and future to achieve data and voice communication.4) flexibility. The Integrated Wiring System should be able to meet flexible and general requirements.5) modular. In the Integrated Wirin

software interface or functions to meet the display requirements of different users. (3) Diversity of input and output data during integration projects. First, we need to integrate the equipment from other manufacturers and easily access the platform software. Second, there are many other problems related to data output when other manufacturers want to integrate their own devices. There are no uniform standards, and they are also very different. (4) Diversity of communication links. communicati

can also use 16-bit CRC verification. It is a simple ARQ automatic request re-transmission protocol, so it is also suitable for use in a 2-wire half-duplex RS485 network. 2. Upgrade preparation and precautions　 As a complex system, no matter how carefully tested before the release, there will always be defects. The only solution after a defect occurs is to patch the system as soon as possible; if it is the operating system of the network device, it i

ITOP-4412 Arm Embedded Development Board----main featuresiTOP-4412 development platform is an embedded Development Board platform designed by Beijing Xun for electronic research and development, the core board is equipped with 64-bit dual-channel 2GB DDR3,16GBEMMC storage, Samsung s5m8767 Power management chip, low power consumption. Backplane onboard high precision GPS module, WiFi Bluetooth module, can,rs485 and other industrial interfaces. Informat

First, the UARTThe UART is a large family that includes interface standard specifications and bus standard specifications for RS232, RS499, RS423, RS422, and RS485. Their main difference is that their respective level ranges are different.Embedded devices are often used in this way TTL, TTL to RS232. Common three leads: Send line TX, receive line RX, level reference ground GND.1.1 Circuit1.2 Communication ProtocolsEach character that transmits data is

Http://wenku.baidu.com/link?url= Vzuh0udxnqqkurpwhotqlicjmm09quleqpumiafw16wuuqhhmmaliktl6j7-4i7jxdbkrtxytzxkiji_5m0vgg-8dukjrejivxyvqin0ueuSerial communication: Including RS232C RS485 RS422 USB, etc.;RS232C transmission distance maximum 15m, transmission speed maximum 20kb/s; Reason:1) The RS232C standard stipulates that the driver is allowed to have 2500PF capacitive load, for example: When using 150pf/m communication cable, the maximum transmission

instrument are the intelligent Management platform of biological sample storehouse developed by Cobazaar and the leader of global Science service field Thermo Fisher Scientific. With Cobazaar's E3-lab, clinical trial information management system and many other systems together constitute a set of scientific research laboratories, large and medium-sized professional sample library of intelligent solutions. The system uses sensors to collect ultra-low-temperature refrigerators, CO2 incubators, l

torque is gradually increased. The miniature servos are mostly plastic teeth, and the 9g servo has a metal tooth model, and the torsion is larger than the plastic teeth. Futaba S3003, Hui Sheng MG995 is a standard servo, the volume is similar, but the former is plastic teeth, the latter metal teeth, both nominal torque is also much worse. Spring Sr403p,dynamixel ax-12+ is a special robot steering machine, different is the former is domestic, the latter is Korean production, both are metal teeth

analysis, the processing, the aggregation, and records according to the rule, creates the corresponding data storage, realizes to the basic data management.The equipment acquisition layer realizes the information exchange between each subsystem and the green Building energy Management system, collects the monitoring data of different types and formats of each system in a unified database, and transmits the management information to the subsystems. An effective information channel is established

equipment through the Internet.2, communication "refers to data communication only, that is, through the computer network system and communication system to achieve the end-to-end transmission." The communication "letter" refers to the information (information), the information carrier is the binary data, the data can be used to express the traditional media form of information, such as sound, image, animation and so on. "Communication" weighs on the means of transmission or use, from this poin

In recent years, the pattern recognition technology has become more and more widely used in access control, security and finance. A typical fingerprint recognition system is composed of a fingerprint sensor and a DSP processor. Fingerprint sensor acquisition fingerprint image, DSP processor real-time implementation of fingerprint recognition algorithm. At the same time, the usual fingerprint identification System also has strong communication ability, in addition to have

Rdr_resetcommuimmetimeout Recovery Timeout Flag 25 Rdr_getantennainterfacecount Get the number of antenna interfaces 26 Rdr_getoutputcount Get the number of output ports 27 Rdr_getoutputname Get the output port name 28 Rdr_createsetoutputoperations Create an operation set data node for the output port, and call Rdr_addoneoutputoperation to add the operation of the output port to the operati

*55mm 8 inch 1450*550*55mm Show hours 1.8 inch 230*140*55mm 2.3 inch 280*180*55mm 3 inch 380*220*55mm 4 inch 520*300*55mm 5 inch 610*350*55mm 8 inch 970*550*55mm Show the day of the month and minute temperature and humidity week 2.3+1.8 inches 510*280*55mm Show the day of the month and the week 5+2.3 inches 750*2

610*350*55mm 8 inch 970*550*55mm Show the day of the month and minute temperature and humidity week 2.3+1.8 inches 510*280*55mm Show the day of the month and the week 5+2.3 inches 750*280*55mm Options The time-of-choice RS485 pairs, rs232c, GPS receivers, GPS Beidou dual-mode receivers, CDMA receivers, Surge arresters, custom-made antenna cable (50 meters, 80 m

Serial initializationD8120 Description:※ According to MD320 Communication protocol, no frame head and frame tail, then (BIT9,BIT8) = (0,0).※BIT13~15 is a set item when a computer is linked to a communication, it must be set to 0 when using the RS command.※RS485 does not consider the method of setting the control line, when using FX2N-485-BD, FX0N-485ADP, (bit11,bit10) = (in).※ If the communication parameters between the PLC and the inverter are as fol