BACnet (A Data Communication Protocol for Building Automation and Control Networks) protocol, the first data communication protocol for building control network, is produced by ASHRAE (American Society of Heating, Refrigerating, and Air-conditioning Engineer).
BACnet (A Data Communication Protocol for Building Automation and Control Networks,楼宇自动控制网络数据通讯协议)协议,是美国暖通、制冷和空调工程师协会ASHRAE研究制定的世界上第一个楼控网络数据通讯协议,是楼控领域中唯一的ISO标准。
According to the programming characteristics under the SOC embedded environment,the dynamic auto-adapted bit stream technology,the intelligent interception technology,and the tele-control technology are utilized to realize the real time network communication of medical video with a variable bit stream from 1M to 4M as well as the tele-control of multiple communication protocols such as TCP,UDP and Multicast.
This paper describes a method to realize the master－ slave mode communication between PC computer and multiple MCS－ 51 microprocessors in the environment of windows by using Visual Basic 6.0 language． Also the circuit of hardware ,the communication protocols as well as the flow charts of software are proposed． Finally an application instance on the signal sampling and chromatographic data analysis system is introduced．
This article mainly introduced the development background and the application demand of the marshalling yard dispatcher production wireless transmission system,and emphatically indicated the system major component to pass on module date RiJing NISSEI ND250A with the RS232 communication agreement and methods, then specify VISUAL BASIC serial communication controller MSCOMM's attributes, method and events.
Base on the ABB AC450,AC80,ACS600,DDCS field interface communication agreement,by means of the configurating network,fitting parameters and the software programming,the data communication was achieved between the ABB controllers and the frequency converter ACS600 multi-drivers. Moreover automatic control of the multi-drivers was completed.
Using touching screen as man-machine interface, the CPU226 of Simens S7—200 series PLC as control core, the electromotor, the motor-operated valve and the motor-operated executor as control objects,communicating with the long-distance control system through Modbus communication agreement, switching to blast furnace gas after firing by coke oven gas and controlling for the flue gas temperature are realized.
This paper, through FISHER-ROSEMOUNT's DeltaVsystem and MODICON PLC, introduces the communication protocal of Modbus,the needs of models of DCS system and PLC system for communication to each other,and the configration of the models. Communication examples are given in this paper.
Meanwhile, we present a Virtual Interface Storage Architecture (VISA) as a new network storage architecture which uses vSCSI as the network communication protocol.
CCPA: Component-Based Communication Protocol Architecture for embedded systems
We present the Component-Based Communication Protocol Architecture (CCPA) to make communication dynamic and configurable.
Its software is a communication protocol between the central control computer and the entrance management base station.
After analyzing the protocol levels used in SAS based on embedded Ethernet and the differences between the TCP and UDP, UDP/IP is selected as the communication protocol between the station-level and bay-level devices for its real-time characteristic.