Finally the thesis depicts the testing process that an opc client application tests the server . the result shows that the server can well realize data communication accorded with opc standard 在本文的最后描述了opc测试客户应用对服务器应用的测试过程,结果表明服务器能较好的实现符合opc标准的数据通信功能。
Communication layer adopted multi - bus structure in this project , which included modbus > dupline - bus and spa - bus , and so better completed data communication function in this project 配电系统的通信层采用多总线结构,结合了modbus总线、 dupline总线、 spa - bus总线三种方式,较好的完成了配电系统的数据通信功能。
The principle , the content and the application of j1939 will also be described in this document in detail , at last , the smallest unit and the basic controller net have been designed 以及详细论述的j1939协议的原理,内容及应用。最后设计最小节点子系统,并构建控制器局域网络初步;根据1939协议编写通信程序,并最终实现数据通信功能。
With the development of communications technology network application and wireless interconnection mobile office has become simpler and smaller and even can be realized via one mobile phone with data communications function 随着通信技术网络应用以及无线互联的发展,移动办公室已经变得越来越简单小巧,甚至只需一个具有数据通信功能的移动电话即可实现。
With the development of industrial automation , distributed control system ( large , medium and small scale ) is applied widely in the field of petrochemical industry and electric power etc . the conventional dcss are connected all by wire line ( industrial lans ) between process control level and control management level , and between process control level and field apparatuses 随着工业自动化的发展,大、中、小型集散控制系统( dcs )在石油化工、电力等行业的应用越来越广泛。目前, dcs系统在过程控制级与控制管理级之间以及过程控制级同现场设备之间大多采用有线方式(局域网)来实现其数据通信功能。
功能: function通信功能: rs-232c安全通信功能: security communication function低层通信功能: lower level communication function分封通信功能: packet communication function高级通信功能: acf advanced communications function; advanced communication function; advanced function for communication管理通信功能: mcf management communication function消息通信功能: mcf message communication function; mcf:message communication function数据通信: data communication and processing; data communications; data traffic; datacom; dc data communication; oem数据通信码: data-link escape数据通信盘: data communication数据通信器: data phone; dataphone数据通信网: dcn data communication network数据通信站: data communication station数据通路功能: data-path function; datapath functionn数据通讯功能: dcf data communication function单向数据通信: one way data communication电子数据通信: electronic data communication; electronic data interchange (edi)独立数据通信: independent data communication高速数据通信: hsdc high speed data communication话音数据通信: vodacom voice data communication贸易数据通信: tradacomm trading data communication启动数据通信: start data traffic数据通信程序: dcdata communications program数据通信单元: dcu data communications unit