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1. Company LAN Ethernet Backbone fiber copper Firewall Router Switch DH era Wor Workcell 2 31186 M Network Security Control applications may require access to the control network 100 of the time Intrusions by other networks into the control network could cause processing delays and loss of control For this reason the control network must be isolated from the office environment and the internet You must provide appropriate security through the use of gateways firewalls routers and or appropriate security software IT personnel in particular must be made aware that inadvertent intrusions resulting from system maintenance and housekeeping network upgrades or broadcast storms can disrupt the control system Determining the Number of Devices and Ports The number of ports you need depends on the number of devices you want to connect to the network You will need a port for each node on a segment If you plan to add nodes at a later date you should consider ordering and installing the cable and connectors for these additional nodes when you install the initial network This will minimize disruption to the network during operation Planning Your EtherNet IP Cable System 3 3 Consider the number and locations of the following when determining how many ports you will need on your network e workstations e T O racks e PanelViews e bridges routers switches and or h
2. PLEASE FOLD HERE BUSINESS REPLY MAIL FIRST CLASS MAIL PERMIT NO 18235 CLEVELAND OH POSTAGE WILL BE PAID BY THE ADDRESSEE OA Rockwell Automation Allen Bradley 1 ALLEN BRADLEY DR MAYFIELD HEIGHTS OH 44124 9705 Reach us now at www rockwellautomation com Wherever you need us Rockwell Automation brings together leading brands in industrial automation including Allen Bradley controls Reliance Electric power transmission products Dodge mechanical power transmission components and Rockwell Software Rockwell Automation s unique flexible approach to helping customers achieve a competitive advantage is supported by thousands of authorized partners distributors and system integrators around the world Americas Headquarters 1201 South Second Street Milwaukee WI 53204 USA Tel 1 414 382 2000 Fax 1 414 382 4444 European Headquarters SA NV avenue Herrmann Debroux 46 1160 Brussels Belgium Tel 32 2 663 06 00 Fax 32 2 663 06 40 Asia Pacific Headquarters 27 F Citicorp Centre 18 Whitfield Road Causeway Bay Hong Kong Tel 852 2887 4788 Fax 852 2508 1846 Publication ENET INOO1A EN P January 2001 Allen Bradley BEEMEIE DOGE aan Automation PN 957464 23 2001 Rockwell International Corporation Printed in the U S A
3. Ethernet 568A Display Wire Color Pair 1 4 5 45 Blue White blue Pair 2 3 6 36 White orange Orange Pair 3 1 2 12 White green Green Pair 4 7 8 78 White brown Brown Ethernet 568B Display Wire Color Pair 1 4 5 45 Blue White blue Pair 2 1 2 12 White orange Orange Pair 3 3 6 36 White green Green Pair 4 7 8 78 White brown Brown Verifying and Troubleshooting Your EtherNet IP Network 5 7 Measuring Cable Length LENGTH IMPORTANT Length measurements show the total length of the Ethernet cable segment If you suspect inaccurate length readings calibrate the MediaChecker to the cable See page 5 3 and the MediaChecker User Manual publication 1788 UM002A US P for details Using the MediaChecker s LENGTH function you can measure the length of Ethernet twisted pair cables If the MediaChecker is not calibrated to the cable under test the factory defaults are used to compute the length If you require more accurate length measurements refer to publication 1788 UM002A US P Before a length measurement is made the MediaChecker performs diagnostic tests to prevent any cable failures from corrupting the length measurement Failures are described on page 5 10 To measure the length of a cable do the following 1 Connect the MediaChecker and the cable ID module to the cable ends as shown in figure 5 2 direct or figure 5 3 via a patch panel 2 Turn the MediaChecker s rotary switch to LENGTH
4. to check the cable selection The MediaChecker displays the network and cable selection for a few seconds and then starts the test If the cable selection is not correct refer to Setting Up the 1788 MCHKR MediaChecker on page 5 3 Publication ENET INOO1A EN P January 2001 5 6 Publication ENET INO01A EN P January 2001 Verifying and Troubleshooting Your EtherNet IP Network In the Wire Map mode the MediaChecker displays the near end of the cable in the top line and the far end of the cable in the second line MediaChecker Allen Bradley 12 36 45 78 ID 12 36 45 78 RA 1788 MCHKR When the MediaChecker detects something on the far end of the cable but cannot determine if it is the cable ID module only the letters ID are displayed at the end of the top line When the cable ID module is detected but a problem with the cable or with the cable ID module is interfering with the identification process the MediaChecker displays or alternately displays and RA Without the cable ID module connected to the far end of the cable the MediaChecker displays The following display indicates the near end wiring of a cable without the cable ID module connected MediaChecker Allen Bradley i 2364578 1788 MCHKR Table 5 B lists the symbols used by the MediaChecker for Ethernet twisted pair displays Table 5 B Key to Twisted Pair Displays
5. You can omit step 3 if you know that the cable selection is correct for the cable under test 3 Verify the Ethernet cable setup Press ENTER to check the cable selection On powerup the MediaChecker displays the cable selection for a few seconds and then starts the test CAL appears to the right in the second line of the display if a cable calibration has been performed for the selected cable type If the cable selection is not correct refer to publication 1788 UM002A US P for information on selecting a new cable setting Publication ENET INOO1A EN P January 2001 5 8 Verifying and Troubleshooting Your EtherNet IP Network Publication ENET INO01A EN P January 2001 The cable length will be displayed in two screens similar to those shown below indicating the lengths of the different wire pairs MediaChecker Allen Bradley MediaChecker Allen Bradley 12 97 A 45 97 vw 36 97 78 97 1788 MCHKR 1788 MCHKR When a length measurement flashes on the display IMPORTANT IMPORTANT the length of the cable exceeds the maximum allowed by the Ethernet standard Measuring the Distance to a Short The MediaChecker can be used to detect and report the distance to shorts and opens as shown in figure 5 4 Figure 5 4 Testing For Shorts 80 Feet FAIL ID 1 amp 2 SHORT lt 80 P 70 Feet The MediaChecker reports information on shor
6. You should also consider using sealed connectors if there is exposure to high vibrations Verifying and Troubleshooting the Network Each cable segment should be verified for proper connection Clear all errors before using the cable Miss paired or crossed wires will cause network errors and failures See chapter 5 for more information Publication ENET INOO1A EN P January 2001 1 6 EtherNet IP Media System QuickStart Publication ENET INO01A EN P January 2001 Chapter 2 Overview of the EtherNet IP Media System What this Chapter Contains The following table describes what this chapter contains and where to find specific information For information about See page Industrial Control System Applications 2 1 Information Applications 2 2 Control Applications 2 2 System Components 2 3 Ethernet Backbone 2 4 Routers 2 4 Bridges 2 4 Hubs 2 5 Ethernet Switches 2 5 Gateways 2 6 Segments 2 6 Point to Point Connections Horizontal Cabling 2 7 Connectors 2 7 Standard RJ45 Connectors 2 7 IP67 Sealed RJ45 Connectors 2 8 Patch Panels 2 8 Enclosures 2 9 Bulkhead Connectors for NEMA Enclosures 2 11 Industrial Control System Fthernet is widely used in the business world for information Anplicati applications The technology has wide availability familiarity and cost pplications benefits making it attractive for use in industrial control systems However information appl
7. 31196 M Verifying and Troubleshooting Your EtherNet IP Network 5 3 If using a patch panel install the ID module with the supplied jumper cable at the patch panel and the MediaChecker at the opposite end of the cable Figure 5 3 Testing a Cable Through a Patch Panel EEE SEER eRe Patch Panel Cable Under Test gt Cable ID Module 31197 M The MediaChecker can be used to perform the following tests Table 5 A MediaChecker Tests for Ethernet Cable Distance to short Distance to open Length Split Pair Wire Map These test procedures are described in the following sections Note For more information on using the MediaChecker refer to the 1788 MCHKR MediaChecker User Manual Rockwell publication 1788 UM002A US P Setting Up the 1788 MCHKR MediaChecker To set up the MediaChecker for Ethernet perform the following steps 1 Turn the MedicChecker on and press SETUP 2 Use the AY keys to scroll to Ethernet and press ENTER 3 Scroll CAY to the type of Ethernet cable that you wish to test and press ENTER to select that cable type Publication ENET INO01A EN P January 2001 5 4 Publication ENET INO01A EN P January 2001 Verifying and Troubleshooting Your EtherNet IP Network 4 Scroll AY to the correct category of Ethernet cable a
8. For presales support call 1 440 646 3NET You can also obtain technical assistance online from the following Rockwell Automation WEB sites e www ab com mem technotes kbhome html knowledge base e www ab com networks eds electronic data sheets Your Questions or Comments on this Manual If you find a problem with this manual please notify us of it on the enclosed Publication Problem Report Preface About This Manual Who Should Use This manual is intended for control engineers who are responsible for This Manual designing implementing and maintaining an industrial control system using EtherNet IP Ethernet Industrial Protocol This manual describes the required media components and how to plan for and install these required components What This Manual Contains This manual contains the following information e Chapter 1 provides a QuickStart e Chapter 2 provides an overview of Ethernet media in a control system application e Chapter 3 provides guidelines for planning your EtherNet IP media system e Chapter 3 provides guidelines for installing your EtherNet IP media system e Chapter 5 provides procedures for troubleshooting your EtherNet IP media system Related Publications Refer to the following Rockwell publications for additional information on planning your Ethernet IP network EtherNet IP Performance and Application Guide publication number ENET AP001A EN P Industrial Automation Wiring an
9. Figure 4 7 Inserting the Wires into the Connector Body Green White 31191 M 7 Push the cable into the shielded connector body until all the wires touch the end of the connector body The jacket should be far enough into the connector body that the cable clamp will engage and hold Publication ENET INOO1A EN P January 2001 4 8 Installing the EtherNet IP Media System Publication ENET INO01A EN P January 2001 8 Insert the connector into the crimp tool and crimp the connector Make sure that the metal tabs on the connector are crimped around the drain wire Figure 4 8 Crimping the Connector 9 Check the crimp by pulling gently on the connector If the jacket or conductors slide out cut the connector off and start over 10 Electrically test the connection using the 1788 MCHKR test tool See chapter 5 Cable Routing Refer to the guidelines on pages 3 8 to 3 11 when routing your cable Installing the Switches Not all switches are industrially hardened Follow the manufactures installation requirements for mounting and environmental conditions Installing Bulkheads Plan your location in such a way that the connector cannot be damaged The connector should be located within the enclosure to minimize exposure to liquids dusts and vibration Installing the EtherNet IP Media System 4 9 Installing the Cable Install the cable per the manufactures requirements for bend radius and pull strength Refer to pa
10. Rite Products Corporation manufactures a ferrite bead part number 2643626502 which can be slipped over category 2 and category 3 type cable conductors You can secure them with heat shrink tubing or tie wraps A cable transient EMI induced onto the cable can be suppressed by a ferrite bead located near the end of the cable The ferrite bead will suppress the EMI before it enters the equipment connected to the end of the cable Publication ENET INOO1A EN P January 2001 3 12 Planning Your EtherNet IP Cable System Publication ENET INO01A EN P January 2001 What this Chapter Contains Installing the Point to Point Horizontal Cable Chapter 4 Installing the EtherNet IP Media System Follow the guidelines in this chapter as you install your EtherNet IP cabling system The following table describes what this chapter contains and where to find specific information For information about See page Installing the Point to Point Horizontal Cable 4 1 Installing the Point to Point Horizontal Cable 4 2 Terminating the Cable Ends 4 2 Required Tools 4 2 Terminating UTP Cable 4 3 Terminating STP Cable 4 6 Cable Routing 4 8 Installing the Switches 4 8 Installing Bulkheads 4 8 Installing the Cable 4 9 Connection of Diagnostic and Maintenance Equipment 4 9 IMPORTANT network You should have read chapter 3 Planning an EtherNet IP Cable System before you install your Install your point to point ho
11. What this Chapter Contains o sedis HA aA Ae eR 2 1 Industrial Control System Applications 2 1 Information Applicationsin 06 46 a02 eo 05 hae SACRE RS 2 2 Control Applications oaaao at Geeatrneen Qoush a 2 2 System COmp nEntS a ae mi ae Valen baad 2 2 3 Ethernet Backbone Mu he oS Lees gaat es Beh a 2 4 4 09 a eae a ee En SO A ee A 2 4 BOCES ork aoe m Meee RES EE Re AOS OD 2 4 NUIT Bees su Payee avs ers eee Ac tee Seater eae ae oe RAC Akh ea eee TE 2 5 Ethemmet Switches 4 6 duces sok an ee ERR ED Pas 2 5 GALE WAV Smile Pan a Galea whi Raa 8 Gee ese 2 6 SECME E EERE RR AE ne Oa ar Dc Da nae ER 2 6 Point to Point Connections Horizontal Cabling 2 7 GCONMECIOIS 22 fee a 8s GM A ae ee BA a 2 7 Standard RJ45 Connectors 000000 2 7 IP67 Sealed RJ45 Connectors 000 2 8 Pateh Panels 85s Sus od cov deh poke see emcee ele Ade ak waaay Ie 2 8 ENCIOSURCS ake 0G WE HEARERS ER CTD md Be REE 2 9 Bulkhead Connectors for NEMA Enclosures 2 11 Publication ENET INOO1A EN P January 2001 Table of Contents ii Planning Your EtherNet IP Cable System Installing the EtherNet IP Media System Publication ENET INO01A EN P January 2001 Chapter 3 What this Chapter Contains s oc ccae ead ieee Be ee eas 3 1 Planning Your Systemen 440s eee ceed Eb awk ee RSE eR eS 3 2 Determining Connectivity to the Backbone 3 2 NetWork Securty ta siaek tones Seay anda he Hu
12. at the switch Planning Your EtherNet IP Cable System 3 5 Eliminating ground loops is extremely important in reducing noise interference cause by ground offsets or local ground transients Ground offsets occur when there is a potential difference between two earth ground points in a system This potential difference can be DC or AC or transient A cable that connects the two points together provides a secondary path for current to travel The current through the communications cable s shield will couple noise into the communications system This noise will have a direct impact on the signal to noise performance of the system Figure 3 2 Ground Noise Loop In Shielded Cable Shielded Cable A System Ground NSZ Noise Loop i V Noise o Local Remote Ground Ground 31199 M There can be as much as a 45 volt high frequency offset in ground potential between the two ends of a 100 meter cable This offset can cause noise currents in the shields Consequently to eliminate ground loops the cable should be grounded at the switch end only If your device is other than a switch or hub and provides a low resistance lt 500k ohms ground at the jack do not connect the shield at the device end of the cable Breaking the ground can be accomplished simply by cutting back the shield and insulating it from the connector plug s shell See figures 3 3 and 3 4 Figure 3 3 Grounding of Cable Shiel
13. be absorbed into the jackets and wire insulation causing plastic deterioration and performance degradation Do not overlook the cable electrical specifications over temperature as many off the shelf cables are not designed to meet TIA EIA standards at industrial temperatures Cable Jackets maybe easily damaged even at low temperature ranges See page 3 6 for more information Publication ENET INOO1A EN P January 2001 1 4 EtherNet IP Media System QuickStart Publication ENET INO01A EN P January 2001 When to Use Shielded STP or Non Shielded UTP Cable STP cable provides an added level of noise immunity If you know that your application is in a high noise environment then shielded cable media should be considered or you should consider using an alternative control network such as ControlNet See page 3 4 Grounding of Shielded Cables Single point grounds are very important for eliminating and reducing ground loops in shielded cable see pages 3 4 to 3 6 Consult the installation data sheet for each device installed for that device s grounding requirements Most Hub Switch manufactures require their equipment to be grounded Note that grounding the equipment will ground the shield when connected via a shielded RJ45 connector Know Your Segment Lengths and Limits Standard Ethernet limits each segment of horizontal wiring to 100 meters or to 90 meters horizontal wiring with two 5 meter jumpers Some applications wi
14. crimp the connector Figure 4 4 Crimping the Connector 8 Check the crimp by pulling gently on the connector If the jacket or conductors slide out cut the connector off and start over 9 Electrically test the connection using the 1788 MCHKR test tool See chapter 5 Publication ENET INOO1A EN P January 2001 4 6 Installing the EtherNet IP Media System Terminating STP Cable Terminate STP cable as follows 1 First strip back 1 inch of jacket and shield foil using an the jacket strip tool Discard the shield foil Be careful not to cut the insulation of the wires If you damage the insulation cut off the end of the cable and start over Figure 4 5 Stripping the Cable Jacket 31188 M 31189 M 2 Separate the individual wire pairs Un twist only back to the jacket 3 Fold the drain wire back in line with the cable Publication ENET INO01A EN P January 2001 Installing the EtherNet IP Media System 4 7 4 Align the wires as shown in figure 4 6 below Figure 4 6 Alignment of Wires Green White Green SSsss Se Blue Blue White Orange Brown Brown White 31190 M 5 Hold the conductors in the proper orientation and trim off the excess length using a pair of sharp cutters The finished length beyond the jacket should be less than 0 5 inches 6 Confirm the correct orientation of the conductors and insert the conductors into the connector body Note that each wire has it s own slot
15. layer ayer 3 and are protocol dependent Since bridges do not have to read the protocol to obtain the routing information they are faster than routers Bridges with more than two ports multiport bridges perform a switching function see page 2 5 Hubs You may experience high levels of collisions and IMPORTANT IMPORTANT reduced throughput if you use hubs You should carefully plan your requirements before installing hubs in a control system A hub is a central connecting device in a network that joins communications lines together in a star configuration Passive hubs are just connecting units that add nothing to the data passing through them Active hubs also sometimes called multiport repeaters regenerate the data bits in order to maintain a strong signal There are also intelligent hubs that provide some added functionality When designing your control system it is important to understand that all devices connected to a hub compete for the network media resulting in collisions and decreased network bandwidth As a result hubs are more suitable for use in information networks than in control networks Ethernet Switches In recent years hub technology has been supplanted by a new high speed switch technology that allows traffic between any two ports on the switch to pass through without contention Switches are basically multiport bridges that can simultaneously move frames between pairs of ports at full wire
16. module at the other end of the cable and displays one of the following screens when a pass condition exists MediaChecker Allen Bradley D PASS indicates the cable is good The PASS 135 RA Resistive Adaptor indicates length of the cable is shown below fia the Cable ID module is detected 1788 MCHKR G indicates the cable ID module is MediaChecker Allen Bradley D PASS 135 not detected If the cable ID module is 9 properly connected and the MediaChecker does not detect it the eee cable is probably defective IMPORTANT Important The MediaChecker may not detect the cable ID module under some open and short conditions The MediaChecker alternately displays 2 and RA for Resistive Adapter when the cable ID module is detected but a problem with the cable or the cable ID module is interfering with the identification process Testing the Wire Map WIRE MAP The MediaChecker s WIRE MAP function enables you to determine the wiring of both the near and far ends of twisted pair cables To test the wire map do the following 1 Connect the MediaChecker and the cable ID module to the cable ends as shown in figure 5 2 or figure 5 3 via a patch panel 2 Turn the MediaChecker s rotary switch to WIRE MAP You can omit step 3 if you know the cable selection is correct for the cable under test 3 Press ENTER
17. reflections Moreover control network components must be able to perform in stressful environments which may include harsh chemicals electrical noise e extreme temperatures and humidity vibrations System Components Overview of the EtherNet IP Media System 2 3 An example of an EtherNet IP control system is shown in the following figure Firewall Router Figure 2 1 EtherNet IP Industrial Control System ControlLogix with PC running Processor and RSLinx Ethernet module Hanalei M E Ethernet Switch t 88858 80 1m FLEX 1 0 System with Ethernet Adaptor Ethernet ControlLogix Gateway Switch MoA IL
18. 1 temperature 2 presence of chemicals 3 protection requirements 4 noise levels 5 cable routing d Select and order materials based on above requirements e Install system f Verify system This section provides an overview of the main considerations you should take into account when selecting your network media and laying out your network Which Data Rate Should You Use For best noise immunity use the lowest data rate at which your application will run Network Security The control network must be isolated from the office environment and the internet You must provide appropriate security through the use of gateways firewalls routers and or appropriate security software See page 3 2 Hubs Pay careful attention to the use of hubs Hubs do not provide security and do not help to control collisions among signals from devices competing for the network media Collisions reduce throughput of the network See page 2 5 Switches Switches provide virtual connections that help to control collisions and reduce traffic on the network In a control application in which real time data access is critical network switches may be required in place of hubs See page 2 5 for more information EtherNet IP Media System QuickStart 1 3 Placement of Switches or Hubs Environment Commensurate with Manufacturer s Limits Placement of your switches should be carefully planned to minimize cable lengths and the effects of the e
19. 9 M Note that patch panels are not specifically required for industrial Ethernet Controllers and I O devices may be directly connected in a point to point configuration or connected via hubs or switches as shown in the following figures Figure 2 8 Small Point to Point System No Patch Panel Direct Connect Enclosure PLC Simple 2 Node Configuration 3 g NULL Cable E Device a RJ45 Bulkhead 31184 M Overview of the EtherNet IP Media System 2 11 Figure 2 9 Larger Point to Point System No Patch Panels Enclosure me me D Ameer zo Switch pannna nana x Devices gt E BABERE RS ji g RJ45 Bulkhead or Wire Gland 31185 M Bulkhead Connectors for NEMA Enclosures Bulkheads should be used wherever connectivity through an enclosure is required A bulkhead connector or gland should be used where cables enter or exit the cabinet to maintain the enclosure seal Publication ENET INO01A EN P January 2001 2 12 Overview of the EtherNet IP Media System Publication ENET INO01A EN P January 2001 Chapter 3 Planning Your EtherNet IP Cable System What this Chapter Contains Use this chapter to determine your network requi
20. Allen Bradley EtherNet IP Media Planning and Installation Manual Installation Instructions e E ee nA mMm Rockwell Automation a Important User Information Because of the variety of uses for the products described in this publication those responsible for the application and use of this control equipment must satisfy themselves that all necessary steps have been taken to assure that each application and use meets all performance and safety requirements including any applicable laws regulations codes and standards The illustrations charts sample programs and layout examples shown in this guide are intended solely for purposes of example Since there are many variables and requirements associated with any particular installation Allen Bradley does not assume responsibility or liability to include intellectual property liability for actual use based upon the examples shown in this publication Allen Bradley publication SGI 1 1 Safety Guidelines for the Application Installation and Maintenance of Solid State Control available from your local Allen Bradley office describes some important differences between solid state equipment and electromechanical devices that should be taken into consideration when applying products such as those described in this publication Reproduction of the contents of this copyrighted publication in whole or part without written permission of Rockwell Automation is prohibited All
21. Connector 1 Connector 2 568A B 5 5 568A B 7 7 8 8 31193 M Connectors Connectors play an important role in sealing and vibration performance RJ45 connector technology was selected for EtherNet IP because it is already accepted as the standard Standard RJ45 Connectors Tidhiein Not all RJ45 connectors are suitable for harsh environments You must carefully select your RJ45 connector for the intended environment Standard off the shelf RJ45 connectors are not sealed to meet the IP67 specification for EtherNet IP see following section In addition their common mode rejection ratio CMRR can be low and the amount of cross talk can be too high for industrial applications Standard RJ45 connectors also are not generally designed to operate in high vibration environments Publication ENET INOO1A EN P January 2001 2 8 Overview of the EtherNet IP Media System Publication ENET INO01A EN P January 2001 IP67 Sealed RJ45 Connectors Figure 2 5 IP67 Sealed RJ45 Connectors 31178 M The IP67 standard specifies that connectors can withstand immersion in water at a depth of 1 meter for 1 hour without incursion IP67 sealed RJ45 connectors have the following features e M18 style threaded flange e standard RJ45 jack e seal at face of jack e design accommodating PCB mount flange mount or bulkhead mount Patch Panels A patch panel is a group of sockets that function as a manual switching center betwee
22. bs 2 5 patch panels 2 8 to 2 10 point to point connections horizontal cabling 2 7 routers 2 4 segments 2 6 switches 1 2 2 5 to 2 6 P patch panels 2 8 to 2 10 planning cable routing 3 8 to 3 9 planning your EtherNet IP cable system 3 1 to 3 11 conduit installations of UTP cables 3 10 determining connectivity to backbone 3 2 determining number of devices and ports 3 2 to 3 3 fast Ethernet 3 3 IP67 sealed connectors 3 7 network security 3 2 placement of switches or hubs 3 7 planning cable routing 3 8 to 3 9 sealed connectors 1 5 3 7 sealed media highflex 3 7 oil resistant jackets 3 6 plenum rated cables 3 6 weld splatter proofing cables 3 7 segment lengths and limits 3 3 selecting and locating 0 3 8 shielded STP cable 3 4 to 3 5 grounding 3 4 to 3 5 surge suppression 3 11 use of bulkheads 3 8 Publication ENET INOO1A EN P January 2001 2 Index use of ferrite beads 3 11 wiring external to enclosures 3 10 wiring guideline 3 9 to 3 11 wiring guidelines ambient temperature 3 9 wiring inside enclosures 3 10 to 3 11 plenum rated cables 3 6 point to point connections 2 7 RJ45 connectors 2 7 routers 2 4 S segment lengths and limits 3 3 segments 2 6 shielded STP cable 3 4 to 3 5 grounding 3 4 to 3 5 surge suppression 3 11 switches 1 2 to 1 3 2 5 to 2 6 placement of 3 7 Publication ENET IN001A EN P January 2001 U using the MediaChecker diagnostic tool 5 2 to 5 9 measuring cable length 5 7 to 5 8
23. d Ground Do Not Here Ground Switch Here B i BSS855 ogona l ee Network gt A SSeeg8 EEE am Hl Device A i Fo th 31187 M Publication ENET IN001A EN P January 2001 3 6 Planning Your EtherNet IP Cable System Publication ENET INO01A EN P January 2001 Figure 3 4 Null Termination of Shielded Cable Connector 2 Device Connector 1 Switch OYMDNPWNE OIYMDNBWNE E Null Cable ee Grounding and Bonding of the Network For information regarding grounding and bonding requirements for your network refer to Rockwell publication no 1770 4 1 Industrial Automation Wiring and Grounding Guidelines and to NFPA 70 the National Electrical code CSA C22 1 the Canadian Electrical code and or other applicable local national or international codes Selecting Cable When selecting cable the jacket construction must be compatible with the temperature and chemicals in the environment Do not overlook the cable electrical specifications over temperature as many off the shelf cables are not designed to meet TIA EIA standards at industrial temperatures Cable Jackets maybe easily damaged even at low temperature ranges Chemicals can be absorbed into the jackets and wire insulation causing plastic deterioration and performance degradation Sealed media may be required if connectors or cable jackets are exposed to a harsh environment If you know that your applicatio
24. d Grounding Guidelines publication number 1770 4 1 Publication ENET INOO1A EN P January 2001 P 2 About This Manual Publication ENET INO01A EN P January 2001 EtherNet IP Media System QuickStart Overview of the EtherNet IP Media System Table of Contents Chapter 1 What this Chapter Contains 4 4 4 0 4 dp dcehe beta ae oe Rh 1 1 Planning Your Network ouaaa Pa be le A a 1 1 Media Selection Guide x 4 o4 exceed vo CAR EARS RE REED 1 2 Which Data Rate Should You Use 1 2 Network Security e imine aunts Bk ART aes 1 2 HUDS uer de goed erg n Ger Gabe a eed a he amp BE AG ae fue ee 1 2 SWIICNESs okie one Fee aea Fed oe a eS 1 2 Placement of Switches or Hubs Environment Commensurate with Manufacturer s Limits 1 3 How Many Ports Do You Need 1 3 Bulkheads fergie ft tele ele aS GG weed tease tA 1 3 PAC Panels wi gouant tae ee aOR eo 1 3 Selecting Cable to Suit the Environment 1 3 When to Use Shielded STP of Non Shielded UTP Cable onnaa Rees 1 4 Grounding of Shielded Cables 1 4 Know Your Segment Lengths and Limits 1 4 Planning Your Cable Routing 1 4 Installing the Cable say oxy ood epee eG exe ees 1 4 Terminating Cable Ends o 9 2 4 6 46a h aha ok a bids 1 4 Connecting Network Devices 1 5 IP67 Sealed RJ45 Connectors 0000 1 5 Verifying and Troubleshooting the Network 1 5 Chapter 2
25. dust contaminates you should protect the connections from invasion from these types of chemicals Use IP67 sealed connectors see page 2 8 and bulkheads to help maintain a seal Placement of Switches or Hubs You must consider the environment when selecting switches or hubs and deciding where to place them Unless industrially hardened or specified switches and hubs should be installed in a suitable enclosure to protect them from static electricity temperature extremes humidity and Electro Magnetic Interference EMD generated by nearby equipment Be sure to consider the temperature inside the enclosures closets when planning where the switches are to be located since the enclosures may not be air conditioned The switch or hub should be grounded per the manufacturer s recommendations Refer to the Telecommunications Industry Association publication TIA EIA 569 A Telecommunications Pathways and Spaces for additional information Publication ENET INOO1A EN P January 2001 3 8 Planning Your EtherNet IP Cable System Publication ENET INO01A EN P January 2001 Selecting and Locating the 1 0 Consider the environment when selecting I O and deciding where to locate it Review the manufacturer s specifications with respect to e vibration e temperature e humidity e noise In harsh environments you may have to provide suitable enclosures for the I O you have chosen Use of Bulkheads Bulkheads should be used wher
26. ead the network address in each transmitted frame and make a decision on how to send it based on the most expedient route traffic load line costs speed bad lines etc Routers are used to segment LANs in order to balance traffic within workgroups and as firewalls to filter traffic for security purposes and policy management Routers are also used at the edge of the network to connect remote locations Routers operate at the network layer and can only route a message that is transmitted by a routable protocol such as IP Because routers have to inspect the network address in the protocol they do more processing and add more overhead than a bridge or switch see the following sections which both work at the data link layer Qayer 2 Because of the processing overhead I O data can not be passed through a router in real time Bridges A bridge is a device that connects two network segments together The segments may be of similar or dissimilar types The bridge is inserted into a network to segment it and keep traffic contained within the segments to improve performance Overview of the EtherNet IP Media System 2 5 Bridges learn from experience and build and maintain address tables of the nodes on the network By monitoring which station acknowledged receipt of an address they learn which nodes belong to the segment Bridges work at the data link layer layer 2 and are protocol independent while routers work at the network
27. ed In all cases the MediaChecker indicates a fault and gives a partial description of the problem but might not identify all of the wiring errors The distance to a short may not be reported depending on the characteristics of the short Notes Publication ENET INOO1A EN P January 2001 Publication ENET INO01A EN P January 2001 A about the EtherNet IP performance and application guide P 1 ambient temperature 3 9 backbone connectivity 3 2 bridges 2 4 to 2 5 bulkheads use of 3 8 C connectors 2 7 to 2 8 IP67 sealed 3 7 IP67 sealed RJ45 connectors 2 8 RJ45 connectors 2 7 E Ethernet backbone 2 4 EtherNet IP media system quickstart 1 1 to 1 5 F fast Ethernet 3 3 ferrite beads 3 11 G gateways 2 6 grounding and bonding of network 3 6 grounding of shielded cable 3 4 to 3 5 H highflex 3 7 horizontal cabling 2 7 hubs 2 5 placement of 3 7 1 0 selecting and locating 3 8 IP67 sealed RJ45 connectors 2 8 3 7 MediaChecker diagnostic tool 5 2 to 5 9 see using the MediaChecker diagnostic tool Index network security 3 2 number of devices and ports 3 2 to 3 3 0 oil resistant jackets 3 6 overview of EtherNet IP media system 2 1 to 2 11 industrial control system applications 2 1 to 2 2 control applications 2 2 information applications 2 2 system components 2 3 to 2 11 bridges 2 4 to 2 5 bulkhead connectors 2 11 connectors 2 7 to 2 8 enclosures 2 9 to 2 11 Ethernet backbone 2 4 gateways 2 6 hu
28. en Bradley is a trademark of Rockwell Automation Ethernet is a trademark of Digital Equipment Corporation Intel and Xerox Corporation Throughout this manual we use these notes to make you aware of safety considerations WARNING Identifies information about practices or circumstances that have the potential to create an explosion hazard ATTENTION Identifies information about practices oro circumstances that can lead to personal injury or death property damage or economic loss Warning and Attention statements help you to e identify a hazard e avoid a hazard e recognize the consequences IMPORTANT Identifies information that is critical for successful application and understanding of the product Rockwell Automation Support Rockwell Automation offers support services worldwide with over 75 sales support offices 512 authorized distributors and 260 authorized systems integrators located throughout the United States alone as well as Rockwell Automation representatives in every major country in the world Local Product Support Contact your local Rockwell Automation representative for e sales and order support e product technical training e warranty support support service agreements Technical Product Assistance If you need to contact Rockwell Automation for technical assistance call your local Rockwell Automation representative or call Rockwell directly at 1 440 646 6800
29. etwork EtherNet IP Media System QuickStart This chapter provides an overview of what you need to consider in planning your network selecting the appropriate media The following table describes where to find specific information For information about See page Planning Your Network 1 1 Media Selection Guide 1 2 Your procedure for planning and laying out your Ethernet network should consist of the following steps 1 Determine the type of application a Information b Control 2 Determine if sealed media P67 is required see pages 2 7 to 2 8 3 Consider your information system a Determine placement of major components b Determine distance of each connection the placement of switches may need to be adjust to meet Ethernet s 100 meter segment limit and to accommodate devices c Determine environmental requirements 1 temperature 2 presence of chemicals 3 protection requirements d Select and order materials based on environments e Install system f Verify system 4 Consider your control system a Determine placement of major components b Determine distance of each connection the placement of switches may need to be adjust to meet Ethernet s 100 meter segment limit and to accommodate devices Publication ENET INOO1A EN P January 2001 1 2 EtherNet IP Media System QuickStart Media Selection Guide Publication ENET INO01A EN P January 2001 c Determine environmental requirements
30. ever connectivity through an enclosure is required The connector should be located within the enclosure to minimize exposure to liquids dusts and vibration Plan your mounting location in such a way that the connector cannot be damaged Planning Your Cable Routing Plan your cable routing very careful You should spend sufficient time planning how to route your cable before attempting to do so Cables should not be routed near equipment that generates strong electric or magnetic fields In particular you should be concerned with routing near and around e lights e motors e drive controllers e arc welders e conduit The following guidelines coincide with the guidelines for the installation of electrical equipment to minimize electrical noise inputs to controllers from external sources in IEEE standard 518 1982 When planning your cable system there are certain installation considerations depending on your application Planning Your EtherNet IP Cable System 3 9 There are three categories of conductors Category Includes 1 AC Power Lines e High power digital ac 1 0 e High power digital dc 1 0 e Power connections conductors from motion drives to motors 2 e Analog I O lines and dc power lines for analog circuits e Low power digital ac dc I 0 lines e Low power digital 1 0 lines e Ethernet I P 3 e Low voltage dc power lines e Communication cables to connect between system components within the same e
31. f you choose not to invest in the cost of the tools IMPORTANT Take care when adding nodes or diagnostic tools to an operational network The addition of a foreign device could disrupt the network performance and cause machine failure Publication ENET INOO1A EN P January 2001 5 2 Verifying and Troubleshooting Your EtherNet IP Network Using the 1788 MCHKR MediaChecker Publication ENET INO01A EN P January 2001 The MediaChecker Diagnostic Tool Rockwell Automation provides a diagnostic tool the 1788 MCHKR MediaChecker that will measure the length of the Ethernet cable and indicate correct split pair wiring wire mapping The tool will indicate shorts or opens on any of the 8 conductors as well as the shield You must clear any detected errors before using the cable as miss paired or crossed wires will cause network errors and machine failures Figure 5 1 MediaChecker Diagnostic Tool 31195 M This tool can be purchased though your local distributor or by calling your local Rockwell Automation sales office Ask for catalog number 1788 MCHKR To test a cable with the MediaChecker you must disconnect all network devices nodes from the cable and connect the local end of the cable to the RJ45 connector on the tool Connect the ID module to the far end of the cable to be tested using the RJ45 DB9 converter Figure 5 2 Testing a Cable Cable Under Test
32. ges 3 8 to 3 11 for additional information Connection of Diagnostic and Maintenance Equipment Observe the following precaution when using diagnostic and maintenance equipment Connecting diagnostic and maintenance equipment ATTENTION f could cause processing delays and loss of control Caution should be exercised in adding additional nodes and diagnostic maintenance equipment Publication ENET INOO1A EN P January 2001 4 10 Installing the EtherNet IP Media System Publication ENET INO01A EN P January 2001 What This Chapter Contains Verifying Terminated Cable Segments Chapter 5 Verifying and Troubleshooting Your EtherNet IP Network The following table describes what this chapter contains and where to find specific information For information about See page Verifying Terminated Cable Segments 5 1 The MediaChecker Diagnostic Tool 5 2 Using the 1788 MCHKR MediaChecker 5 2 Setting Up the 1788 MCHKR MediaChecker 5 3 Using the TEST Function 5 4 Testing Twisted Wire Pairs 5 5 Testing the Wire Map WIRE MAP 5 5 Measuring Cable Length LENGTH 5 7 MediaChecker Failure Detection 5 10 Measuring the Distance to a Short 5 10 Each cable segment on your network should be verified for proper connection prior to putting it into service A variety of test tools are available to perform verification and diagnostics on your network There are also a number of companies that offer this service i
33. herNet IP Media System 4 3 Terminating UTP Cable Terminate UTP cable as follows 1 First strip back 1 inch of jacket using an appropriate jacket strip tool Be careful not to cut the insulation of the wire If you damage the insulation cut off the end of the cable and start over Figure 4 1 Stripping the Cable Jacket 31188 M 31189 M 2 Separate the individual wire pairs Un twist only back to the jacket Publication ENET INOO1A EN P January 2001 4 4 Installing the EtherNet IP Media System Publication ENET INO01A EN P January 2001 3 Align the wires as shown in figure 4 2 below Figure 4 2 Alignment of Wires m Green White oe Green SS Orange White as Blue White Orange Brown f Brown White 31190 M 4 Hold the conductors in the proper orientation and trim off excess length using a pair of sharp cutters The finished length beyond the jacket should be less than 0 5 inches Confirm the correct orientation of the conductors and insert the conductors into the connector body Note that each wire has it s own slot Figure 4 3 Inserting the Wires into the Connector Body Green White 31191 M Push the cable into the connector body until all the wires touch the end of the connector body The jacket should be far enough into the connector body that the cable clamp will engage and hold Installing the EtherNet IP Media System 4 5 7 Insert the connector into the crimp tool and
34. ications and control applications have different requirements as described in the following sections Publication ENET INOO1A EN P January 2001 2 2 Overview of the EtherNet IP Media System Publication ENET INO01A EN P January 2001 Information Applications In an industrial control system information applications typically are used for downloading PLC programs monitoring processes and gathering statistics process data and diagnostics The performance of this type of application is not as critical as a control application where speed throughput response time and downtime are critical to a manufacturing process Control Applications Control applications require fast response times and high throughput of data Network availability is of highest importance Intrusion into the network has to be limited by the use of firewalls and bridges The installation of the network must be robust enough to prevent damage and noise ingress that could result in process downtime Of particular concern commercial off the shelf Ethernet products are not compatible with high noise environments as may be found in an industrial manufacturing plant Among the problems encountered with low cost off the shelf commercial products are e low common mode rejection ratio CMRR e capacitance imbalances further degrading the CMRR performance e attenuation too high over temperature impedance tolerance too wide 15 resulting in high system
35. ll require more jumpers In these applications the total length of horizontal wiring must be adjusted to compensate for the added loss of each connector pair Planning Your Cable Routing Route your cable as described on pages 3 8 to 3 11 in this manual e If your application is in a high noise environment then you should plan to use shielded cable e Segments should be as short as possible Installing the Cable Install the cable per the manufacturer s requirements for bend radius and pull strength Consult the cable manufacturer when installing UTP cables in conduit as the electrical performance can be affected by the conduit metal Avoid routing near equipment that generates strong electric or magnetic fields See chapter 3 for more information Terminating Cable Ends The performance of your system depends on the cable termination Careful cable end preparation will help to install the connector and assure a successful connector installation See pages 4 2 to 4 8 EtherNet IP Media System QuickStart 1 5 Connecting Network Devices Connect the devices to your network per the manufacturer s instructions IP67 Sealed RJ45 Connectors Use the appropriate connectors for the environment If your application requires cable and connectors to be exposed to liquids or dust you should protect the connections from invasion from these types of contaminates Use IP67 sealed connectors see page 2 8 and bulkheads to help maintain a seal
36. m mee mae OS 3 2 Determining the Number of Devices and Ports 3 2 Horizontal Segment Lengths and Limits 3 3 Use of Fast Ethernet 100 Mbps lt c wacntioe wade ee a 3 3 Use of Shielded STP Cable ys nananana auaa 3 4 Grounding of Shielded Cables nnana ea espe we pa 88 3 4 Grounding and Bonding of the Network 3 6 Selecting Cable Sov cur pase ie Jog be bMS areas 3 6 Oil Resistant Jackets o va oy naete wh ee als HA ed 3 6 Plenum Rated Caples i cavowt aici ne eth pk ade Rt 3 6 Weld Splatter Proofing Cables 3 7 PAS Fees y tose ne Of hve Bar ats teed se a o ox dealt a 3 7 TPG Sealed Connectors cs aie he ent he Hat eee tenets 3 7 Placement of Switches or Hubs 2 9 54 442 Xe RARE BE 3 7 Selecting and Locating the I O 2 6 0 os Late aes ed 8 3 8 Use of Bulkheads bess Wise tebe a ee et bk a 3 8 Planning Your Cable Routing ossaa sate oie erat eos week 3 8 General Wiring Guidelines lt 6 2 pce eae eS SRS See 3 9 Ambient Temperature naana aaaea 3 9 Precautions about Conduit Installations OF UTP Cables recen e Sf seed de Gas ee iraa 3 10 Wiring External to Enclosures 3 10 Wiring Inside Enclosures n ee ee 8 EONS os 3 10 Surge SUPPLESSION ei ia OE ae ae ei ie A R 3 11 Use Of Ferrite Beads ex ta 4 vay tnt eee be Gabe yay 4 3 11 Chapter 4 What this Chapter Contains sf hha oo ae oR Ss 4 1 Installing the Point to Point Horizontal Cable 4 1 Terminating
37. may not function properly when installed in conduit as the metal conduit can effect the electrical properties of an unshielded cable Consult the cable manufacturer when installing UTP cables in conduit Wiring External to Enclosures Cables that run outside protective enclosures are relatively long To minimize cross talk from nearby cables it is good practice to maintain maximum separation between the Ethernet cable and other potential noise conductors You should route your cable following these guidelines Cable in a contiguous metallic Route yourcable at From noise sources of this strength wireway or conduit least this distance Yes 0 08m 3 Category 1 conductors of less than 20 amps 0 15m 6 ac power lines of 20 amps or more up to 100 KVA 0 3m 12 ac power lines greater than 100 KVA No 0 15m 6 Category 1 conductors of less than 20 amps 0 3m 12 ac power lines of 20 amps or more up to 100 KVA 0 6m 24 ac power lines greater than 100 KVA Publication ENET INO01A EN P January 2001 Consult your local state and national codes regarding the grouping of cables In the absence of these codes the general rule for noise protection is a minimum distance of 3 inches from electric light and power conductors and an additional inch for each 100 volts over 100 volts Voltage Level Minimum Distance 0 100 V 3 inches 101 200 V 4 inches 201 300 V 5 inches 301 400 V 6 inches Wiring Inside Enclosu
38. measuring distance to a short 5 8 setting up the MediaChecker 5 3 to 5 4 testing the wire map 5 5 to 5 6 testing twisted wire pairs 5 5 to 5 6 tests for Ethernet cable 5 3 UTP cables conduit installations 3 10 V verifying your EtherNet IP network 5 1 to 5 10 see using the MediaChecker diagnostic tool verifying terminated cable segments 5 1 to 5 2 Ww weld splatter proofing cables 3 7 what this guide contains P 1 who should use this guide P 1 who should use this manual P 1 wiring guidelines 3 9 to 3 11 wiring external to enclosures 3 10 wiring inside enclosures 3 10 to 3 11 AB Allen Bradley Ly Publication Problem Report Pub Name EtherNet IP Media Planning and Installation Manual al No Pub No ENET INOO1A EN P Pub Date January 2001 PartNo 957464 23 eck Fropiem s lype escribe Frobiem s nternai Use Uniy echnical Accuracy text Mustration Completeness procedure step Mustration definition info in manua What information is missing example guideline feature accessibility explanation other info not In manual Clarity What is unclear Seq uence What is not in the right order Other Comments Use back for more comments Your Name Location Phone eturn to Marketing Communications Allen Bradley en Bradley Drive Mayfield Hts one FAX 440 646 4320 Publication ENET IN001A EN P January 2001 957464 23 Other Comments
39. mp S SHORT lt 19 1788 MCHKR Display Failure Description 7 Short across the data pairl2 SHORT is blinking Wire 1 and wire 2 are shorted together MediaChecker Allen Bradley p at approximately 174 ft 53 m from the near end of the FAIL ID cable 1 amp 2 SHORT lt 174 1788 MCHKR Pa Split pair SPLIT PAIR is blinking In this case wires from pair 1 MedaChecker Se Allen Bradley wires 4 amp 5 and pair 2 wires 3 amp 6 are swapped FAIL ID Refer to table 5 B on page 5 6 wW 12 SPLIT PAIR 1788 MCHKR MediaChecker Allen Bradley amp 45 SPLIT 36 36 36 1788 MCHKR cr Open wire o is blinking Wire 3 is open somewhere along the MediaChecker Allen Bradley cable 12 36 45 78 ID 12 06 45 78 RA 1788 MCHKR 7 Short to the shield SHORT is blinking There is a resistive fault between wire 1 and the shield at approximately 19 8 m from the near end of the cable Va FAIL ID Vv 1 amp 3 SHORT lt 190 1788 MCHKR MediaChecker Allen Bradley D Va MediaChecker Allen Bradley 3 amp 6 SHORT lt ao 1788 MCHKR Three wires are shorted SHORT is blinking Wires 1 3 and 6 are shorted together at approximately 190 ft 58 m from the near end of the cable 1 BS Publication ENET INO01A EN P January 2001 The MediaChecker might not be able to map some situations with four or five wires miswir
40. n at the transport layer and above They perform complete conversions from one protocol to another rather than simply support one protocol from within another Sometimes routers can implement such gateway functions A gateway can also mean a device that acts as a go between connecting two or more networks that use the same protocols In this case the gateway functions as an entry exit point to the network Transport protocol conversion may not be required but some form of processing is typically performed Segments A segment is a section of a local area network LAN that is used by a particular workgroup or department and separated from the rest of the LAN by a bridge router or switch Networks are divided into multiple segments for security and to improve traffic flow by filtering out packets that are not destined for the segment Overview of the EtherNet IP Media System 2 7 Point to Point Connections Horizontal Cabling Point to point connections are direct connections from one device to another via an Ethernet cable segment as shown in figure 2 3 No hubs switches or other connective devices are used Additional examples are shown in figures 2 8 and 2 9 on page 2 10 Figure 2 3 Point to Point Connections jE e a ase CH aoua 31181 M Point to point connections must end in a null termination as shown in figure 2 4 Figure 2 4 Null Termination No Switches 1 1
41. n incoming and outgoing lines in a communications system They are typically used for flexibility in network configuration especially in an office environment In an industrial control system patch panels may be used to interface I O devices and switches or hubs Overview of the EtherNet IP Media System 2 9 Enclosures In an industrial environment the controller and switch are often mounted in a controlled environment inside a NEMA enclosure with access via bulkhead connectors Some typical examples are shown in the following figures Figure 2 6 I O Interfaced Via Patch Panels and a Switch Devices te K Enclosure PLC laa BSE LUCK e 0000 Switch ne h RJ45 Bulkhead 31182 M Publication ENET IN001A EN P January 2001 2 10 Overview of the EtherNet IP Media System Publication ENET INO01A EN P January 2001 Figure 2 7 1 0 Interfaced Via Single Patch Panel and Switch Enclosure vu saat lap omg ome Bese ts Switch Patch Panel S lt Devices L RJ45 Bulkhead 3117
42. n is in a high noise environment then shielded cable media should be considered or you should consider using an alternative control network such as ControlNet Oil Resistant Jackets If your application requires control of equipment that uses cutting oils or lubricating chemicals the selection of cable construction should include oil resistant type jackets Plenum Rated Cables Plenum installations require special material compounds in the makeup of the cables If your application requires cables to be run above the ceiling then you should use Plenum rated cables Planning Your EtherNet IP Cable System 3 7 Weld Splatter Proofing Cables If your application requires control of welding equipment you should carefully route your cables to reduce damage from weld splatter and noise ingress All cables should be routed to cross welding and motor control cables at right angles and should never run parallel to control cables The cables should be protected from the weld splatter either by an added protective sleeve or by selecting cables with the proper jacket construction Hightlex Typically Ethernet cables are constructed of 24 gauge solid copper conductors Hiflex requires stranded type conductor construction to extend the life of a cable in flexing applications Currently there are no EtherNet cables with stranded construction IP67 Sealed Connectors If your application requires cable and connectors to be subjected to liquid or
43. nclosure General Wiring Guidelines Follow these guidelines for wiring all EtherNet IP cables e If a cable must cross power lines it should do so at right angles e Route at least 1 5m 5 ft from high voltage enclosures or sources of rf microwave radiation e If the conductor is in a metal wireway or conduit each section of the wireway or conduit must be bonded to each adjacent section so that it has electrical continuity along its entire length and must be bonded to the enclosure at the entry point e Only shielded Ethernet cables should be placed into metal conduit If you need to protect or route your EtherNet cable in a metal conduit then you must use a shielded cable The shield must not come in contact with the conduit at any point For more information on general wiring guidelines see Rockwell publication 1770 4 1 Industrial Automation Wiring and Grounding Guidelines and the Telecommunications Industry Association publication TIA EIA 607 Grounding and Bonding Requirements Ambient Temperature The ambient temperature of the environment must be considered in specifying the cables and connectors to be installed Some Ethernet cables cannot survive and or will not perform to specification in the extreme hot and cold temperatures of industrial environments Publication ENET INO01A EN P January 2001 3 10 Planning Your EtherNet IP Cable System Precautions about Conduit Installations of UTP Cables Some UTP cables
44. nd press ENTER to select that category 5 Scroll AV to the correct wire size and press ENTER to select that size 6 Press SETUP to exit the setup routine at any time MESIA on can check the cable selection at any time when not in Setup mode by pressing the ENTER key Using the TEST Function The TEST function tests the attached cable and indicates PASS or FAIL based on the cable s compliance with the parameters stored in the MediaChecker for the selected cable Note To test only the wire map or measure only the cable length use the WIRE MAP or LENGTH functions To test a cable do the following 1 Connect the MediaChecker and the cable ID module to the cable ends as shown in figure 5 2 or figure 5 3 via a patch panel 2 Turn the rotary switch to TEST You can omit step 3 if you know the cable selection is correct for the cable under test 3 Press ENTER to check the cable selection The MediaChecker displays the cable selection for a few seconds as shown below and then starts the test MediaChecker Allen Bradley eS UTP CAT5 AWG24 1788 MCHKR If the cable selection is not correct refer to Setting Up the 1788 MCHKR MediaChecker on page 5 3 Verifying and Troubleshooting Your EtherNet IP Network 5 5 Testing Twisted Wire Pairs When you test twisted pair cables the MediaChecker checks for the cable ID
45. nvironment Switches or hubs should be industrially hardened or installed in a suitable enclosure to protect them from static electricity temperature extremes humidity and Electro Magnetic Interference EMD generated by nearby equipment Be sure to consider the temperature of the enclosures closets where the switches are to be located Many switches cannot withstand the temperatures in an industrial environment and the enclosures may not be air conditioned Refer to the manufacturer s specifications How Many Ports Do You Need While planning your network you must determine the number of switches you will need and the number of ports for each switch chassis Each network device will require a corresponding switch port for connection to the network The number of ports per switch chassis will also depend on your physical network layout Bulkheads Bulkheads should be used wherever connectivity through an enclosure is required The connector should be located within the enclosure to minimize exposure to liquids dusts and vibration Plan your mounting location in such a way that the connector is not exposed to damage from plant activity See pages 2 9 to 2 11 Patch Panels Patch panels should be used only when necessary to maintain flexibility See page 2 8 Selecting Cable to Suit the Environment When selecting cable the jacket construction must be compatible with the temperature and chemicals in the environment Chemicals can
46. p EE E To ControlNet v DeviceNet Network Network eaa sibs To DH EHE Network LL Ethernet to RS 232 C Interface Control Logix 0 with Ethernet module So F MicroLogix Processor p y m ma sa Ethernet PLC 5 Ethernet joe AE Ethernet SLC 5 05 d Processor Switch Processor Powermonitor 3000 Powermonitor Il emn gooo Master with Ethernet Ethernet Communication Communication Card Card y 31159 M The following sections describe the basic EtherNet IP industrial control system media components of an Publication ENET IN001A EN P January 2001 2 4 Overview of the EtherNet IP Media System Publication ENET INO01A EN P January 2001 Ethernet Backbone The Ethernet backbone is the part of the network that handles the major traffic It employs the highest speed transmission paths in the network and may also run the longest distance A backbone can span a large geographic area or be small enough to be contained in a single cabinet Smaller networks or subnets are attached to the backbone Routers Routers serve as an internet backbone interconnecting all networks in an enterprise This architecture strings several routers together via a high speed LAN topology such as Fast Ethernet or Gigabit Ethernet Routers are also the backbone of the Internet Routers forward data packets from one local area network LAN or wide area network WAN to another Based on routing tables and routing protocols routers r
47. rements The following table describes what this chapter contains and where to find specific information For information about See page Planning Your System 3 2 Determining Connectivity to the Backbone 3 2 Network Security 3 2 Determining the Number of Devices and Ports 3 2 Horizontal Segment Lengths and Limits 3 3 Use of Fast Ethernet 100 Mbps 3 3 Use of Shielded STP Cable 3 4 Grounding of Shielded Cables 3 4 Grounding and Bonding of the Network 3 6 Selecting Cable 3 6 Placement of Switches or Hubs 3 7 Selecting and Locating the 1 0 3 8 Use of Bulkheads 3 8 Planning Your Cable Routing 3 8 General Wiring Guidelines 3 9 Surge Suppression 3 11 Use of Ferrite Beads 3 11 After reading this chapter you may wish to consult the engineering drawings of your facility for specific information concerning the best location for installing your network Publication ENET INOO1A EN P January 2001 3 2 Planning Your EtherNet IP Cable System Planning Your System Publication ENET INO01A EN P January 2001 Determining Connectivity to the Backbone The following sections describe some of the considerations you must take into account when designing and securing your network Figure 3 1 Backbone Connectivity
48. res Cable sections that run inside protective equipment enclosures are relatively short As with wiring external to enclosures you should maintain maximum separation between your Ethernet cable and Category 1 conductors When you are running cable inside an enclosure route conductors external to all raceways in the same enclosure or in a raceway separate from Category 1 conductors Planning Your EtherNet IP Cable System 3 11 Route your cable at From noise sources of this strength least this distance 0 08m 3 Category 1 conductors of less than 20 amps 0 15m 6 ac power lines of 20 amps or more up to 100 KVA 0 6m 24 ac power lines greater than 100 KVA Surge Suppression Transient Electro Magnetic Interference EMI can be generated whenever inductive loads such as relays solenoids motor starters or motors are operated by hard contacts such as pushbutton or selector switches These wiring guidelines assume you guard your system against the effects of transient EMI by using surge suppressors to suppress transient EMI at its source Inductive loads switched by solid state output devices alone do not require surge suppression However inductive loads of ac output modules that are in series or parallel with hard contacts require surge suppression to protect the module output circuits as well as to suppress transient EMI Use of Ferrite Beads Ferrite beads can provide additional suppression of transient EMI Fair
49. rizontal cable observing your cable supplier s installation instructions and the following guidelines e Bend Radius the bend radius should not exceed 4 times the cable diameter o Pull Strength the pull strength should not exceed 90 Ibs or the maximum specified on the manufacturer s data sheet Publication ENET INOO1A EN P January 2001 4 2 Installing the EtherNet IP Media System Terminating the Cable Ends The performance of your system depends on the cable termination Publication ENET INO01A EN P January 2001 Careful cable end preparation will help to install the connector and assure a successful connector installation Pay particular attention to the amount of un twisting of the conductor pairs Un twist only enough length to route the wires within the connector body Refer to the procedures described in the following sections Manila Not all RJ45 connectors are industrial grade and may not meet shock and vibration requirements or be suitable for your environmental conditions If your connectors must meet IP67 specifications you must use sealed connectors Required Tools You will need the following tools to terminate the ends of your UTP or STP Ethernet cable e cable cutting tool supplied with Rockwell Automation tool kit 1786 CTK e cable jacket stripping tool such as Orthronics Easy Strip e crimp tool supplied with Rockwell Automation tool kit 1786 CTK and optional RJ 45 die set Installing the Et
50. speed For example a 16 port 10BaseT hub shares a 10 Mbps bandwidth with all 16 attached nodes By replacing the hub with a switch each sender receiver pair has the full 10 Mbps capacity so a 16 port 10BaseT switch would effectively have an 80 Mbps bandwidth supporting eight pairs Capacity can be further increased by using full duplex switches Publication ENET IN001A EN P January 2001 2 6 Overview of the EtherNet IP Media System Publication ENET INOO1A EN P January 2001 A switch segments a network into many parallel dedicated lines to produce a contentionless architecture as shown in figure 2 2 Figure 2 2 Hubs Versus Switches Switch All devices contend for media Each sender receiver pair and share bandwidth has full network bandwidth Switches are available for both standard 10 Mbps Ethernet and 100 Mbps Fast Ethernet In a control application in which real time data access is critical network switches may be required in place of hubs Gateways The term gateway can have different meanings It may refer to a device that performs protocol conversion between different types of networks or applications Such gateways functio
51. the Cable Ends fico atin Bot tt Co ee 4 2 Required TOO sis 6 ceo oe ech at a 5 eet ee A ae cle at aa 4 2 Terminating UTP Cable xc Axi ois foe BN he Sey cae 4 3 Terminating STP Cablen oo 2 veut ota ok Gag joe oa ons 4 6 Cable Routing Ft A lot Saks tc te atte at att pe Gnas anal See at ot 4 4 8 Installing the Switches yh 5 gc c od ater al Gr ale Sag aot dot sits s 4 8 Installing Bulkheads sie te eal ee Os oe Sea ees 4 8 Installine the Cables sii 5 27 cen ee ed Oe area a E E E N 4 9 Connection of Diagnostic and Maintenance Equipment 4 9 Verifying and Troubleshooting Your EtherNet IP Network Notes Index Table of Contents iii Chapter 5 What This Chapter Contains so sce 424946 2048 heer ees 5 1 Verifying Terminated Cable Segments 5 1 The MediaChecker Diagnostic Tool noaa aanas 5 2 Using the 1788 MCHKR MediaChecker 5 2 Setting Up the 1788 MCHKR MediaChecker 5 3 Using the TEST Function vaca cee eas ee 5 4 Testing Twisted Wire Pairs 4275 dere cee eres wie ote hie 5 5 Testing the Wire Map WIRE MAP 5 5 Measuring Cable Length LENGTH 5 7 Measuring the Distance to a Short osoasa saaa aeaa 5 8 MediaChecker Failure Detection 4 s bia 5 Fede yor 5 10 Publication ENET INOO1A EN P January 2001 Table of Contents iv Publication ENET INO01A EN P January 2001 Chapter 1 What this Chapter Contains Planning Your N
52. ts and terminated cables as follows Short across a data pair The MediaChecker measures the resistance of the short then displays the distance to the short based on the resistance Short across a power pair or from a power wire to a data wire The MediaChecker measures and displays the resistance of the short Verifying and Troubleshooting Your EtherNet IP Network 5 9 Ethernet cable test specifications are shown in table 5 C Table 5 C Ethernet Cable Test Specifications Test Range Accuracy Resolution Cable Length 7 0 5 m 1 ft Distance to Short 7 3m 1 m to 350 m 7 10 ft 0 5 m 1 ft Distance to Open 2 ft to 999 ft 7 3m 7 10 ft Split pairs N A N A m Testing for split pairs requires 2 or more pairs with similar capacitance Split pair section of the cable must be at least 2 meters 6 ft long and greater than 10 of the otal cable length 2 05m 1 ft for cables lt 100 m long 328 ft 1 m 5 ft for cables gt 100 m long 1 ft 0 5 m for cables to 999 ft long 305 m 10 ft 3 m for cables gt 999 ft long Publication ENET INOO1A EN P January 2001 5 10 Verifying and Troubleshooting Your EtherNet IP Network MediaChecker Failure Detection Table 5 D shows examples of cable failures detected Table 5 D Cable Failures MediaChecker Allen Bradley FAIL ID Vv 1 a
53. twork may degrade the noise rejection of the system and disrupt an otherwise functioning network Publication ENET INOO1A EN P January 2001 3 4 Planning Your EtherNet IP Cable System Publication ENET INO01A EN P January 2001 Use of Shielded STP Cable Depending on where you plan to route your cable you must select the correct cable for the environment Shielded cable performs better than non shielded cable in industrial environments In particular if your application is in a high noise environment or your cable must be run in close proximity to noise radiating sources then you should plan to use shielded cables You should consider shielded cables if your application includes one or more of the following e spot welding control e Motor Control Centers e drives greater than 10 HP e induction welding processes e proximity to high power RF radiation e electrostatic processes e high current devices greater than 100 amps There are specific grounding requirements for shielded cable These are discussed in the following section Grounding of Shielded Cables IMPORTANT Shields play an important roll in providing noise immunity for your system However an improperly installed shielded cable can cause problems due to voltage offsets in your grounding system To minimize the effects of ground offsets you will need to isolate the shield at one end of the cable In this case the shield should be isolated at the device not
54. ubs e future I O Horizontal Segment Lengths and Limits The total length of each horizontal cable segment must not exceed 100 meters between any two active devices Jumpers are limited to a total length of 10 meters which must be subtracted from the 100 meter limit For example if you have a 5 meter jumper at each end of a cable segment the segment is limited to a maximum length of 90 meters Use of Fast Ethernet 100 Mbps A higher data rate will provide a wider network bandwidth But generally the higher the data rate the less noise tolerant a communications network will be Use of fast Ethernet 100 Mbps for control is the most critical application in terms of noise Additionally the network must be error free as the greater the number of errors in an EtherNet IP system the greater the network traffic When traffic increases so does response time If your application depends upon short response time safeguards must be taken to minimize errors due to noise and other causes of increased traffic Throughput can be further increased by using full duplex communications For Fast Ethernet we highly recommend the use of low noise high performance cables and connectors Any degradation in noise rejection will degrade an entire link between a switching device and the peripheral equipment If you are using a Fast EtherNet IP device it has been specially designed for high noise rejection Introduction of a non EtherNet IP device into the ne

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