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办公以太网和工业以太网的区别
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Aspects of Industrial Ethernet
• 工业以太网和商用以太网区别所在:
• Environment环境 • Operation 运行 • Maintenance 维护 • Management 管理
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一些统计数字
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Investing in operational safety pays
Industrial VS Office Ethernet
Contents
• 以太网历史
• 一些统计数字
• 结构化布线
• 交换机的物理特性
• 拓扑结构和冗余
• 带宽
• 组播因素
• VLANs 虚拟局域网
• 优先级区别服务
• 故障设备的替换
• 网络管理
• 结论
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Definition
• “只有一个以太网” • 什么是工业以太网?
Miscellaneous 3%
Hardware
17% Software
7%
Support 73%
Source: Gartner 实G用r文o档up
结构化布线
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结构化布线的好处
• 简化设计 • 产品可选择余地大 • 兼容性好 • 增加可靠性 • 易于维护
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结构化布线标准
ISO/IEC 11801
• 将以太网技术用于工业领域 • 将以太网和TCP/IP作为工业通讯技术和协议
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History
• 1973 – First Ethernet – Xerox PARC 2.94Mb/s • 1975 – First US patent – Xerox • 1980 – Ethernet v1 – Digital, Intel, Xerox 10Mb/s • 1982 – Ethernet v2 – Digital, Intel, Xerox • 1985 – IEEE 802.3 • 1989 – ISO Standard 88023 • 1990 – 10BaseT (twisted pair) • 1994 – 10BaseF (fibre) • 1995 – 100BaseT/F 100Mb/s • 1997 – Full Duplex • 1998 – 1000Mb/s • 2005 – Power Over Ethernet • 2006 – 10 Gb/s • …… – 40 / 100 Gb/s
(ID))
• TO = Telecommunication Outlet • CP = Consolidation Point
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Cabling Structure Office Industry
Layer 1
CD
Layer 2 (Layer 3) Layer 4
Production hall Primary cabling
• 以太网是开放的标准. • 以太网使网络的垂直集成成为可能. • 对比现场总线,以太网提供了更大的通讯带宽以满
足多应用集成的需求
• 主要的以现场总线为工业通信技术的制造商转而投
奔各自基于标准以太网的工业:
• DeltaV (Emerson) • Modbus/TCP (Modbus) • EtherNet/IP (ControlNet DeviceNet) • ProfiNet (Profibus) • FF HSE (Foundation Fieldbus) • PowerLink (CAN Open)
BD
BD
Secondary cabling
FD
MD
MD
MD
Tertiary cabling
TO
TO
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TO
TO
Office building
BD
FD
CP
TO
TOTO
Physical Cabling Structure
Office:
Primary
CD
BD
Secondary
FD
FO (1500m) E9...10/125 G50(62,5)/125
EN50173
ANSI/TIA/EIA 568-B
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术语
• CD = Campus Distributor • BD = Building Distributor • FD = Floor Distributor • MD = Machine Distributor (new: Intermediate Distributor
Around two thirds of all failures are caused by faults in network components
3%
Application
7%
Presentation
Application programs
Session Transport
8% 10 %
Network operating system
Interbus
ASI Seriplex
Profibus DP
Profibus FMS
CAN
CCLink ControlNet
DeviceNet SDS
ETHERNET
WorldFIP / EC/SP50 H2
IEC/SP50 H1
Profibus PA
工业通讯为什么选择以太网?
FO (500m) E9...10/125 G50(62,5)/125
Industry (3 or 4 layers):
CD
BD
FD
Tertiary
TO
CP
TP (90m+2*5m) FO
G50(62,5)/125
Users Range
TP
Machine
TO
MD
FO (1500m) E9...10/125 G50(62,5)/125
Network Data Link
12 % 25 %
Network components
35 %
Physical
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Source: Datacom, Network Management Special
Total Cost of Ownership of a Network over 5 years
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Communication Trend in Industrial Environments
Corporate Level Management Level Process Measurement and Control Level Field Level
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Interbus Loop