您好,欢迎访问联智博库

上传文档

当前位置:首页 > 工控技术 > PLC > Ethernet Design Considerations Reference Manual

Ethernet Design Considerations Reference Manual

  • 小库
  • 35 人阅读
  • 0 人下载
  • 2019-02-20 11:07:18

还剩... 页未读,继续阅读

免费阅读已结束,点击付费阅读剩下 ...

¥ 0 元,已有35人购买

免费阅读

阅读已结束,您可以下载文档离线阅读

¥ 1 元,已有0人下载

付费下载

文档部分内容文本提取

Reference ManualEthernet Design ConsiderationsImportant User InformationSolid-state equipment has operational characteristics differing from those of electromechanical equipment. Safety Guidelines for the Application, Installation and Maintenance of Solid State Controls (publication SGI-1.1 available from your local Rockwell Automation sales office or online at http://www.rockwellautomation.com/literature/) describes some important differences between solid-state equipment and hard-wired electromechanical devices. Because of this difference, and also because of the wide variety of uses for solid-state equipment, all persons responsible for applying this equipment must satisfy themselves that each intended application of this equipment is acceptable.In no event will Rockwell Automation, Inc. be responsible or liable for indirect or consequential damages resulting from the use or application of this equipment.The examples and diagrams in this manual are included solely for illustrative purposes. Because of the many variables and requirements associated with any particular installation, Rockwell Automation, Inc. cannot assume responsibility or liability for actual use based on the examples and diagrams.No patent liability is assumed by Rockwell Automation, Inc. with respect to use of information, circuits, equipment, or software described in this manual.Reproduction of the contents of this manual, in whole or in part, without written permission of Rockwell Automation, Inc., is prohibited.Throughout this manual, when necessary, we use notes to make you aware of safety considerations.Allen-Bradley, Rockwell Software, Rockwell Automation, TechConnect, ArmorPOINT, ControlFLASH, ControlLogix, Logix5000, MicroLogix, PanelView, POINT I/O, PowerFlex, RSLinx, RSLogix, RSLogix 5000, Stratix 2000, Stratix 6000, Stratix 8000, Stratix 8300, are trademarks of Rockwell Automation, Inc.Trademarks not belonging to Rockwell Automation are property of their respective companies.WARNING: Identifies information about practices or circumstances that can cause an explosion in a hazardous environment, which may lead to personal injury or death, property damage, or economic loss.ATTENTION: Identifies information about practices or circumstances that can lead to personal injury or death, property damage, or economic loss. Attentions help you identify a hazard, avoid a hazard, and recognize the consequenceSHOCK HAZARD: Labels may be on or inside the equipment, for example, a drive or motor, to alert people that dangerous voltage may be present.BURN HAZARD: Labels may be on or inside the equipment, for example, a drive or motor, to alert people that surfaces may reach dangerous temperatures.IMPORTANTIdentifies information that is critical for successful application and understanding of the product.Rockwell Automation Publication ENET-RM002A-EN-P - July 20113Table of ContentsPrefaceAdditional Resources. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Chapter 1EtherNet/IP OverviewNetwork Protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Common Industrial Protocol (CIP). . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Configuration Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11IP Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Gateway Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Subnet Mask. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14EtherNet/IP Modules in a Control System. . . . . . . . . . . . . . . . . . . . . . . . . 15Bridge Across Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Chapter 2Ethernet Infrastructure ComponentsTopologies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Topologies with an Individual Switch . . . . . . . . . . . . . . . . . . . . . . . . . . 17Topologies with Embedded Switch Technology. . . . . . . . . . . . . . . . . 19Media. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Hubs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Repeaters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Media Converters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22Bridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22Routers and Gateways . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23Switches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24Unmanaged versus Managed Switches. . . . . . . . . . . . . . . . . . . . . . . . . . 25Autonegotiation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25Full Duplex Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26Chapter 3Ethernet Infrastructure FeaturesTransmission Packets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28Default Setting in RSLogix 5000 Software. . . . . . . . . . . . . . . . . . . . . . 29Frames. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30Multicast Address Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31Transmission Protocols. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31Address Resolution Protocol (ARP). . . . . . . . . . . . . . . . . . . . . . . . . . . . 32Domain Name System (DNS). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Network Address Translation (NAT). . . . . . . . . . . . . . . . . . . . . . . . . . 34Virtual LANs and Segmentation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34VLAN Trunking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36VLANs and Segmentation Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . 37Quality of Service (QoS). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38QoS Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 384Rockwell Automation Publication ENET-RM002A-EN-P - July 2011Table of ContentsResiliency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39Time Calculations in a Logix5000 System. . . . . . . . . . . . . . . . . . . . . . . 39Resiliency Protocols. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39Spanning Tree Protocol (STP) and Rapid STP (RSTP) . . . . . . . . . . 40EtherChannel Protocol. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41Flex Links Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42Resilient Ethernet Protocol (REP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43Device-level Ring (DLR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45Internet Group Management Protocol (IGMP). . . . . . . . . . . . . . . . . . . . . 47Port Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48Dynamic Secure MAC Address (MAC ID) . . . . . . . . . . . . . . . . . . . . . 48Static Secure MAC Address (MAC ID) . . . . . . . . . . . . . . . . . . . . . . . . 48Security Violations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49Device Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50Chapter 4EtherNet/IP ProtocolConnections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53TCP Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54CIP Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55CIP Connection Message Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56CIP Connection Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56EtherNet/IP Network Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58Packets Rate Capacity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61EtherNet/IP Capacity Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61Upgrade to Latest Firmware Revision. . . . . . . . . . . . . . . . . . . . . . . . . . . 62Monitor Packet Sizes in Current Application . . . . . . . . . . . . . . . . . . . 62Requested Packet Interval(RPI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62Messaging. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63Implicit Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63Explicit Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64CIP Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65CIP Sync . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66Integrated Motion on EtherNet/IP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68Connectivity to IT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69Rockwell Automation Publication ENET-RM002A-EN-P - July 20115Table of ContentsChapter 5Predict System PerformanceIntroduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71System Prediction Goals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72Part One: Determine if system has sufficient bandwidth to meet application requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73Part Two: Predict maximum input or output times for CIPconnections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74Performance Calculations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75Identify and Count Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76Calculate Packets/Second . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77Estimate the Fastest RPI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79Estimate Maximum Input or Output Times for CIP Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80Example: Predict System Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81Part One: Determine if system has sufficient bandwidthto meet application requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82Explicit Messaging. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83EtherNet/IP Module Serving as a Scanner . . . . . . . . . . . . . . . . . . . . . . 84EtherNet/IP Modules Functioning as Adapters . . . . . . . . . . . . . . . . . 86EtherNet/IP Modules 2 and 3 with Consumed Tags . . . . . . . . . . . . 88Recommendations to Achieve More Throughputin an Existing Control System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89Part II: Estimate the maximum input or output times for CIPconnections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89Refine Estimates. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

小库

523篇文档

文档介绍: Ethernet Design Considerations Reference Manual

评论

发表评论
< /92 > 付费下载 ¥ 1 元

Powered by DS文库

Copyright © 联智博库 All Rights Reserved. 鲁ICP备18004091号-4
×
保存成功