FF总线与ProfiBus总线比较

现场总线Fieldbus

技术相关(Technology)

数值变送技术Value transmission technology

4-20mA, HART, Fieldbusanalog

4...20 mA

analog + digital (hybrid)

digital

现场设备设计Field Device Design

Identical base device PA or FF electronics 设备基于PA或FF电子模块

总线系统优势Advantage of a bus system

通过数字通讯可获取更多信息 More information thanks to digital communication 传统方式conventional 数字digital

15,3 mA

1st value 2nd value 单位unit 状态status 诊断diagnose

= 70,32 = 23,02 = mbar = ok = 温度过高 Temerature too high

总线系统优势Advantage of a bus system

更精确的数值More accurate values过程控制 Process Control

D CPU A A D

0-65535

D CPU A

D CPU A

10-38-10+38CPU

总线系统优势Advantage of a bus system

减少接线Reduced wiring 传统模式conventionalProcess Near Component I/O模块 module 接线架marshalling rack

总线系统FieldbusProcess Near Component) 总线耦合器buscoupler Ex [i]

控制柜cabinetEx [i] 接线架marshalling rack 接线盒junction box 连接件 connection elements PS

典型总线结构Typical Fieldbus Architecture

PROFIBUS-PA

FOUNDATION Fieldbus

Controller PROFIBUS-DP RS485

PC

Controller High Speed Ethernet Linking Device Linking Device

PC

Coupler/ Link

PROFIBUS-PA IEC 61158-2

FF

FF

FF IEC 61158-2

Systemintegration with couplers/links to PROFIBUS-DP (up to 12 Mbit/s) 系统通过耦合器/链接器集成至Profibus-DP Parallel use of DP- and PA field devices DP-和PA现场设备平行使用

Direct system integration or linking devices 直接系统集成或连接装置 High Speed Ethernet (100 Mbit/s) 高速以太网

循环数据传输 Cyclic (scheduled) Data TransmissionPROFIBUS-PA GSD (DDB) FOUNDATION Fieldbus DD

Master 主机

Arbitrator 仲裁

主机控制数据交换(中央控制机理) One cyclic master controls data exchange (Central Control Philosophy) 从站通过GSD进行描述 Slaves are described by GSD (Device Data Base - DDB)

现场设备直接进行数据交换

Direct data exchange between field devices possible (Distributed Control Philosophy) 从站通过普通文件格式描述(DD file)Slaves are described by Common File Format (CFF)

现场设备管理Field Device Management

PROFIBUS-PA

FOUNDATION Fieldbus

# address DIP switch

serial no. TAG no.

仪表通过不同的地址进行管理 Instrument management with address 地址设定可通过硬件和软件两件方式 Address setting with hardware or software

仪表通过标记号和序列号进行管理 Instrument management with TAG-number and serial number

现场设备管理Field Device ManagementPROFIBUS-PA FOUNDATION Fieldbus

PLC PROFIBUS-DP RS485

PC

PLC High Speed Ethernet Linking Device Linking Device

PC

coupler/ Link

PROFIBUS-PA IEC 61158-2

FF

FF

FF IEC 61158-2

系统扩展原则上是可能的，但并不是所有的 系统供应商都支持此功能

在线和离线

任何时候都可以而且系统不会被中断 Everytime offline and online possible. Process don´t need to be interrupted.

Online system extension is in principle possible, but not all system suppliers support this function

技术比较Technical comparisonPROFIBUS-PAPID Template

FOUNDATION FieldbusPID Template

PV2 PV1 CV SP

PV2 PV1 CV SP

PV2 #1 #2 #1 #2 FB PID PV1

CV

#3

PNK

FF

#4

#3 #3 PV2 #2 PV1 #1 FB PID CV

本安解决方案Intrinsic Safe SolutionsPROFIBUS-PApower supply power supply barrier segment coupler IEC 61158-2 PROFIBUS-DP RS485

FOUNDATION Fieldbus

T T

IEC 61158-2

T

Segment coupler contains intrinsically safe power supply and terminator段耦合器带有本安供电及终端 Simplified intrinsic safety concept according FISCO model 依据FISCO模型简化的本安概念

Intrinsic safety and power supply with separate concept本质安全与供电隔离 Conventional intrinsic safety concept according FISCO model 依据Fisco模型的传统本安概念

FF总线的防爆方案Safe areaFF H1 segment网端

FF 配电器*

标准 中继器*

FISCO本安 中继器r*

Entity本安 中继器* 1 2

Div 1 / Zone 0/1Safe Area or网端 网端

Div 2 / Zone 2

*: 需配置标准 24V 电源 ，未标注

每一路都有短 路保护和隔离 输出。无需外 配网端。

调试工具Service ToolPROFIBUS-PA FOUNDATION Fieldbus

Proficard/Profiboard(Softing) Commuwin II(Endress+Hauser) Coupler(Pepperl+Fuchs)

PCMCIA Card(NI) NI ConfiguratorI(NI) Power Supply(NI)

Fieldbus

Bus with spurs

Bus with spurs