现场总线设备要求001.ppt

Agenda（议程） Device Internal设备内部 More accurate values / more information 更精确的数值/更多的信息 Device Internal设备内部 Resource, Transducer, Function Block资源，转换，功能模块 Different views of fieldbus不同的现场总线使用人员 Resource Block资源块 Device information设备信息 Transducer Block转换块 Connection to the hardware对应相关硬件 Transducer Block转换块 Connection to the hardware 对应相关硬件 Function Block功能块 View of the programmer Function Block功能块 AI block模拟量输入 Structure of a Function Block功能块结构 Function Block功能块 Path of signal in a fieldbus device现场总线设备信号处理过程 Value Transmission Technology More accurate values / more information By serial data transmission on a bus system, the limitation on one measuring size gets irrelevant. The field devices are capable to successively exchange information with the controller.The advantages of these facts are: Transmission of values between 10-38 up to 10+38 is possible. The field device can be clearly identified with TAG No., type, manufacturer, serial number, software version, etc. More information is transmittable, i.e. status, diagnosis, measuring range, date of installation,... Additional measuring information is transmittable, such as density and temperature with a mass flow measuring device. Main process functions are done easier - decentralised in the field devices. For example a totalizer installed in the process itself. The field devices can be remote parameterised via the bus. “...dedicated to a single international fieldbus.” ? 2004 Fieldbus Foundation * FF Seminar Shenzhen, May 26-27, 2004 FOUNDATION Fieldbus Seminar Field Device Requirements 现场设备要求 by Klaus Korsten Manager Fieldbus Systems Services Endress+Hauser Process Solutions Switzerland Device certification 设备认证 Device Internal 设备内部相关 Resource, Transducer and Function Block 资源块，转换块及功能模块 Device Description 设备描述 Fieldbus Foundation Certification Quality guarantee - independent of manufacturer 质量保证-不依赖制造商 Fieldbus Foundation has a qualified certificate system for fieldbus device