Western Reserve Controls W5-JDC4 User`s manual
Contents
1. 4 3 GENERAL SPECIFICATIONS iessssescacisccsssnscsonsectncseonnsconadestecsessssecessussssbntscsasseluedentasevsesencasentessessuntecdseseoseseons 5 4 HARDWARE INSTALLATION AND CONFIGURATION sccssscsssscsssccsssccsssscsssccsssssssscesssssssscessnsssees 6 4 1 6 4 2 DIP SWITCHSSETTINGS 5 2 itte eie na wu Mn theta ee 7 4 3 OPBRATION 53 etie eti o tere tie e OR Loi ttn ree Na 8 4 4 POWER REQUIREMENTS diete ed read ode eh OE da Qos dieu dea p DUI tds 9 4 5 NETWORK CABLING AND 1 nnnnn ren nn neret 10 4 5 1 Cable Lengths isda ierat tn 10 4 5 2 NEAR 10 4 5 3 DeviceNet Connection Wiring estet teet e tr regen 12 4 5 4 SDS Bus Connection Wiring eee eoe ebore eet ree ie esr pterea 13 Siea OPERA MON ipee ETE 15 5 1 APPLICATION NOTES sate Sco ann deer ini eee 15 5 1 1 Theory of Op ratiori tee tiere ee aire p 15 5 1 2 Network Throughput Design Considerations eese ener nennen een nennen 16 5 1 32. WRC CANX CAN Bus Extender Series 4 User s Manual Western Reserve Controls Inc Western Reserve Controls WRC CANX xx Series 4 PUB 14 1 User s Manual Although every effort has been made to insure the accuracy of this document all information is subject to change without notice WRC takes no liability for any errors in this document or for direct indirect incidental or consequential damage resulting from the use of this manual Document PUB 14 1 Rev 4 01 April 2011 Copyright 1997 2011 WRC Western Reserve Controls Inc 1485 Exeter Road Akron OH 44306 330 733 6662 Phone 330 733 6663 FAX sales wrcakron com Email http www wrcakron com Web SmartMux Lite CAN Bus Extender and WRC are trademarks of Western Reserve Controls Inc DeviceNet is a trademark of the Open DeviceNet Vendor Association Inc ODVA SDS is a trademark of the Honeywell Inc All other trademarks are property of their respective companies Western Reserve Controls WRC CANX xx Series 4 PUB 14 1 User s Manual TABLE OF CONTENTS IPOD HAMA 1 1 1 SERIES 4 SPECIFIC PEATURES 5 0 2 1 2 ea E 2 1 3 BASIC OPERATION 2 1 4 REFERENCE DOCUMENTS uan aue ane qiiae DUE 3 2 QUICK START
3. Power 1 5 W Mounting WRC CANX DIN DIN rail mount EN 50022 WRC CANX NEM Panel mount 4 screws Size WRC CANX DIN WRC CANX NEM Length 4 32 110 mm 5 11 130 mm Depth 1 79 45 5 mm 2 27 57 7 mm Height 3 44 87 4 mm 3 70 94 0 mm Operating Temp 0 70 C Humidity 0 95 RH non condensing Western Reserve Controls WRC CANX xx Series 4 PUB 14 1 User s Manual 4 Hardware Installation and Configuration 4 1 Overview A CAN Bus Extender is a single device connecting to two parts sub network of a single CAN Bus network The CANX DIN is to be mounted on an EN50022 DIN rail available from WRC and WRC s distributors as part number WRC 50022 in any orientation The CANX NEM is a NEMA 4X polycarbonate enclosure and is panel mounted Wi NETWORK A 1 79 45 5 mm A NET B 12345678 OPEN NETWORK B 4 65 118 mm Figure 4 1 WRC CANX DIN Series 4 Dimensional Drawing Western Reserve Controls WRC CANX xx Series 4 PUB 14 1 User s Manual 54324 WES eb C DeviceNet Female Mini DeviceNet Male Mini NETWORK A 2 27 57 7 NL Eua 1234 5678 V CL CH VH NETWORK B 5 11 130 mm 2 25 57 2 mm DeviceNet Female DeviceNet Mini Male Mini uu 0 82 LA 80 2 mm A p 5 11 130 mm Figure 4 2 WRC CANX NEM Series 3 Dimensional Drawing 4 2 DIP Switch Settings Western Reserve Controls PUB 14 1 WRC CANX x
4. black DODOU Device Connector Male Contacts Figure 4 3 WRC CANX DIN DN DeviceNet cable connector WV B v Red P M S 207C o CAN_H White EIA 395A within wire cable limits SHIELD CANL Blue P M S 297 meom B v Black P M S 4426C Figure 4 4 DeviceNet cable specifications 12 Western Reserve Controls WRC CANX xx Series 4 PUB 14 1 User s Manual DRAIN Figure 4 5 WRC CANX NEM DeviceNet Connectors 4 5 4 SDS Bus Connection Wiring The supplied 5 pin CAN Bus connection plug accepts cable sizes from 12 AWG 24 AWG The maximum wire size 12 AWG has an area of 6530 circular mils and the smallest 24 AWG has an area of 3265 circular mils 13 Western Reserve Controls WRC CANX xx Series 4 PUB 14 1 User s Manual Termination Resistor non inductive BUS CONNECTIONS 120 ohms DC POWER 1 2 W 2 GND Blue Black CAN H White 1 SHIELD Figure 4 7 SDS Plug Connector FACE VIEW OF FACE VIEW OF MALE FEMALE MINI CONNECTOR MINI CONNECTOR Figure 4 6 505 Mini Connector 14 Western Reserve Controls WRC CANX xx Series 4 PUB 14 1 User s Manual 5 Operation The CANX accepts and stores messages received at either network connection and actively re transmits the messages to the other sub net while providing 2500V isolation between the two sections of the network The two bus connections for each CANX are refer
5. 5 9 TABLE 4 3 NETWORK STATUS LED S LABELED NSA AND 8 20 0 0000000000000 tren ere nennen 9 TABLE 4 4 DIAGNOSTIC STATUS LED S LABELED 9 TABLE 4 5 NETWORK MAXIMUM LENGTHS 10 TABLE 4 6 NETWORK MAXIMUM LENGTHS 05 10 TABLE 4 7 TERMINATING RESISTORS ccccesessscceccccessenssceescccesessnseeeeecceeseesseeeeeeceesesssaeeeecceeseessseeeeececeesstseeeseeeeeeseaaees 11 TABLE 7 1 ADDITIONAL WRC DEVICENET PRODUCTS cccccesssscecccceessssseceecceeeessssseeeecceceesssseeececeesesssseeeeeceesenssaaees 22 TABLE 10 1 AND CANR MODELS 2 1 rennen ene 25 1 Overview The WRC CANX Extenders is a family of products that extend the communications cable lengths for DeviceNet SDS Smart Distributed System J1939 CANopen and other CAN V2 0 Part A or Part B serial bus systems By allowing the user to extend the bus length for any given speed they assist the user in cost effectively implementing I O or other nodes on these buses at remote locations that would be more difficult or more expensive to do otherwise A WRC CANX Extender the family members collectively referred to here as CANX or Extender can be connected in a bus trunk line or drop line and is transparent to the other nodes
6. CANX and CANR series 3 The CANX and CANR also feature improved reverse voltage protection and CAN data lines noise immunity Does the WRC CANX or CANR come with a warranty Yes the WRC CANX and CANR like all WRC products are covered under a two year factory warranty from the date of invoice that all hardware furnished under order will be free from defects in material workmanship and design How are field programming updates accomplished In the event that your WRC CANX or CANR is in need of an update contact WRC We will discuss with you the options you have for your network If the answer to your question is not found here or you require further assistance please contact Western Reserve Controls at 1485 Exeter Road Akron OH 44306 330 733 6662 phone 330 733 6663 fax For product information e mail sales wrcakron com For technical support e mail support wrcakron com 29
7. Fixed Operation eet a eet ERE IT seve Eder t e Pene 16 5 1 4 Autobaud Operation eit DOM RUM 17 6 EXAMPLE CONFIGURATIONS eee ehe 18 7 ACCESSORIES AND OTHER CAN PRODUTCTIS eere eerte 404 100 seta seta eet 21 8 5 5255555 23 9 SUMMARY OF CHANGES TO SERIES 4 FROM REV 2 AND SERIES 3 2 1 41 3 1 24 9 1 DIP SWITCH BAUD RATE SETTINGS aai 24 9 2 TERMINATING RESISTORS Sacked eh oad hecho ena Sac ae eee ae ne 24 9 3 FIELD PROGRAMMABLE UPDATES sese eene nente 24 10 FREQUENTLY ASKED QUESTIONS Toten e se enne ve booa eene uen 25 WRC CANX 25 25 Western Reserve Controls WRC CANX xx Series 4 PUB 14 1 User s Manual LIST OF FIGURES FIGURE 1 1 WRC CANX DIN DN SERIES 4 ccccccccccesssssssceccccecessssseeeecceeeesssseeeeccceeesssseeeececeeeeesaeeeeeceeeesesseeeseeeeeetsaaees 1 FIGURE 4 1 WRC CANX DIN SERIES 4 DIMENSIONAL 6 FIGURE 4 2 WRC CANX NEM SERIES 3 DIMENSIONAL 1 1 000000001
8. length extend the length of the drop cable e g longer drops than 6 m for DeviceNet provide 2500V electrical isolation between 2 sub nets allow the user to employ non linear network topologies 0 star tree etc 5 What types of connections are available for WRC CANX and CANR extenders Please see question 3 if you need to know what connectors come on which WRC CANX or CANR models Several of the WRC CANX and CANR extenders come with the 5 pin CANbus connection plug which accepts cable sizes from 12 AWG 24 AWG This is the standard round mini style connector M18 with male pins for copper cable A standard DeviceNet cord with a female end connects to the CANX or CANR e Turck supplies individual connectors ends that can be used to build custom DeviceNet or copper cables part number B4151 0 16 is a 5 pin 600V 9A connector that comes in a male or female variety that will connect to the CANX or CANR Please refer to www turck com to find a distributor near you e f you are interested in purchasing pre fabricated cables with the proper DeviceNet connectors Brad Harrison is the manufacturer of Woodhead P N 105002A01F030 male pins and Woodhead P N 105000A01F030 female pins which are distributed by Gross Automation at http www bradharrisonsales com along with many other 5 pole plug in options All Woodhead products that are compatible with WRC CANX CANR are called mini change cordsets Standard P
9. on the bus It receives and actively re transmits store and forward each message from either side of the network without interpreting the message or acting upon it Each product has two network interfaces with an electrical isolation path between the two Power is delivered to the unit through the network connectors For DeviceNet and SDS systems power is provided through the 5 conductor bus cable A CANX can be used for quite a number of helpful purposes including e to extend the network beyond its absolute maximum length e g 500 meters for DeviceNet at the slowest speed to implement a longer network for a given baud rate e g pushing a 500K baud network beyond 100 m for DeviceNet e provide higher speed baud rates for a given network length e to extend the length of the drop cable e g longer drops than 6 m for DeviceNet e to provide 2600V electrical isolation between the 2 sub nets e to create a unique network topology instead of a conventional bus structure such as a star configuration Figure 1 1 WRC CANX DIN DN Series 4 Western Reserve Controls WRC CANX xx Series 4 PUB 14 1 User s Manual 1 1 Series 4 Specific Features The Series 4 CANX provides enhancements over previous versions Enhancements include CAN 2A and 2B support New Switch settings allow selection for CANopen speeds up to 1 M Baud in addition to the standard DeviceNet Baudrates Increased message internal buffers Automatic Me
10. software configuration The CANX supports autobaud Autobaud operation has the advantage of allowing a system implementer or designer to ignore the operating baud rate when installing the CANX The general practice is that when an l O device is autobaud it does not transmit a DupMacID request message immediately upon power up It waits for another fixed baud rate device to send its DupMaclD message in order use that message to determine to which baud rate the network has been set Since the CANX is not a logical node on DeviceNet it does not initiate any DeviceNet communications When both the A and B sides are set to autobaud a valid message on either side will be used to set the baud rate on both sides In addition that message is transmitted out the other side of the network to the nodes there from which they can establish their baud rates if in autobaud In the case where no device that initiates this DupMaclD sequence all the autobaud devices will just wait for some valid message to be generated The CANX baud rate is set by setting SW1 switch positions before powering up the A side of the CANX as defined in Table 4 1 17 Western Reserve Controls WRC CANX xx Series 4 PUB 14 1 User s Manual 6 Example Configurations Examples of valid configurations are shown in the following figures The first example shown demonstrates a standard linear bus structure for comparison Linear Bus Topology Terminator Tap 4
11. the CANR has delay of about 880 The Series 4 units have increased buffer sizes from Series 3 and faster message forwarding as well What testing has WRC completed to guarantee the reliable operation of CANX and CANR extenders The WRC production and engineering teams have rigorously tested the and CANR extenders at a variety of strenuous network speeds and environmental conditions with many different network configurations Although there is no official ODVA test for this type of device the CANX and CANR have been included in the circuit while running the ODVA conformance testing for a slave device The slave device passed in house protocol conformance test with the CANX or CANR in the circuit between the master and slave The CANX and CANR also passed the in house execution of the OVDA physical layer test Each CANX or CANR pair is tested for functionality individually before leaving our facility How does the Series 4 WRC CANX or CANR differ from the Series 3 model Single Mode fiber cable is now an option available with the Series 4 CANR New switch settings allow selection for CANopen speeds up to 1M baud in addition to the standard DeviceNet baud rates There are larger internal buffers which allow the WRC CANX and CANR to store more messages while forwarding them in a first in first out manner making it even less likely that a message will ever be lost in transmission There is shorter latency time compared to
12. 1 Network cables are broken or disconnected 2 Network is not properly terminated 3 All devices have stopped trying to communicate on the network Problem Some messages are missed on network Module Status LED is solid Green NSA and NSB LEDs are flashing Red Meaning Internal CAN buffers are full Network has more traffic than it can handle Possible Solutions Reduce the scan rate from the Master 2 Reduce the COS frequency on devices 3 Decrease the assembly sizes of I O connections 4 Recalculate the network traffic and bandwidth without the CANX Problem Some messages are missed on network Module Status LED is solid Green NSA and NSB LEDs are flashing Red Meaning Internal AMT buffers are full Network has more traffic than it can handle Possible Solutions 1 Reduce the scan rate from the Master 2 Reduce the COS frequency on devices 3 Decrease the assembly sizes of I O connections 4 Recalculate the network traffic and bandwidth without the CANX 23 Western Reserve Controls WRC CANX xx Series 4 PUB 14 1 User s Manual 9 Summary of Changes to Series 4 from Rev 2 and Series 3 To facilitate implementation of the new Series 3 CANX products for customers that are currently users of the CANX Revision 2 xx products this section summarizes the product changes from Rev 2 to Series 3 9 1 Switch Baud Rate Settings Several new options exist for setting the baud rate on the
13. 24 Analog block 32 channels WRC1 JDAIO Discrete and Analog I O block 4810 32 AIO WRC1 JDAIO 48 Discrete I O block 8 01 8 DOs 4 Als W5 JDB16x DeviceNet CANopen Extender DIN mount WRC CANX DIN DN SDS Extender DIN mount WRC CANX DIN SD DeviceNet CANopen Extender DIN mount WRC CANX DIN C7 DeviceNet CANopen Extender NEMA box WRC CANX NEM AU DeviceNet CANopen Extender NEMA box WRC CANX NEM DN SDS Extender NEMA box WRC CANX NEM SD DeviceNet CANopen Extender Fiber Optic NEMA WRC CANR DF DN box 22 Western Reserve Controls WRC CANX xx Series 4 PUB 14 1 User s Manual 8 Troubleshooting This section identifies some of the common problem observed when commissioning or operating a CANX Extender Problem DeviceNet devices will not communicate on the network Module Status LED is solid Green Network Status LEDs are flashing Green at second intervals Meaning No transmissions have been received by the CANX for 0 5 seconds Possible Solutions 1 Network cables are broken or disconnected 2 Network is not properly terminated 3 All devices have stopped trying to communicate on the network 4 Power has been lost on the B Side subnetwork Problem DeviceNet devices will not communicate on the network Module Status LED is solid Green Network Status LEDs are flashing Green quickly Meaning The CANX is in autobaud and is waiting for a valid message to fix its baud rate Possible Solutions
14. 7 FIGURE 4 3 WRC CANX DIN DN DEVICENET CABLE CONNECTOR 1 2040000000000000000000000000000000020208 12 FIGURE 4 4 DEVICENET CABLE SPECIFICATIONS ccccsssscccecceessssscceecceeesessseeeeecceecesssaeeeeeceesessssseeeeceesesstsaeeeeceeeeeneaees 12 FIGURE 4 5 WRC CANX NEM DEVICENET 8 12 2 2 122 404000000 200000000000000020000000000000000 n sese ennt nn s 13 EIGURE 4 6 SDS MINI CONNECTOR 2555 ci iive dece at aet ewe ed OE pa dh os NO Du eb dete 14 FIGURE 6 1 LINEAR TOPOLOGY EXAMPLE csssscccccccssssssscccsccceessssseeescccessesseeescceeeessssaeeeecceesessaeeseeceesensaeeeeeeeesensaeees 18 FIGURE 6 2 LINEAR TOPOLOGY WITH DOUBLE DISTANCE EXAMPLE 19 FIGURE 6 3 LINEAR TOPOLOGY WITH MULTIPLE EXTENDERS 2 1 0 00 2 2 0 0000000000000000000000202020 19 FIGURE 6 4 LINEAR TOPOLOGY WITH MULTIPLE EXTENDED DROP LINES 20 FIGURE 6 5 STAR TOPOLOGY WITH MULTIPLE DROP LINES 2 2 0 00220000000001000 0 0000000 00000220200 20 FIGURE 10 1 SAMPLE WRC CANX SETUP cccccccccccesssssssceececeesessseeeeccceesesssseeeeceeesesssaeeeeeceesesssaeeeeeceeeeessseeeseeeseesesees 27 LIST OF TABLES TABLE 4 1 BAUD RATE SETTINGS FOR 5 5 1 82 0 222 000000000000000000000000055 050052 8 TABLE 4 2 MODULE STATUS LED LABELED
15. AN Bus is connected to each side of the CANX and each side receives its power and signals from the Bus on its respective side See Figure 1 2 for a typical application Western Reserve Controls WRC CANX xx Series 4 PUB 14 1 User s Manual Whenever a message is transmitted on the Bus to which CANX is connected CANX receives the message on the side where it was initiated and performs a store and forward of the message to the other side It then transmits the message to the bus on the other side following the defined bus arbitration rules This action is performed for any valid CAN message independent of who generated it or to whom it is intended There is approximately a 75 usec propagation delay of the message through the CANX The CANX is not addressed as a specific device on the Bus and cannot be interrogated by other nodes It is transparent to all other nodes on the bus WRC CANX Network A CAN Bus T Master Terminating resistor requirements indicated by T Figure 1 2 Typical CANX network configuration 1 4 Reference Documents The following documents are referenced in this User s Manual ODVA DeviceNet Specification Volume I Release 2 0 or CIP specification Volume 3 Honeywell Micro Switch Specification GS 052 104 SDS Smart Distributed System Physical Layer Specification release date 12 8 1994 Western Reserve Controls WRC CANX xx Series 4 PUB 14 1 User s Manual 2 Quick Star
16. ANX does not interrogate the message to determine the target node and does not know physically where the target node is connected As the bus negotiation is performed on the second side the retransmitted message may or may not get on the next bus section immediately That will depend solely upon the priority of the message the CANX is sending with respect to the messages being generated by nodes on that side of the bus and on the amount of overall bus traffic on that side In the case where the CANX does not immediately win the negotiation it stores the messages and attempts to resend it in the same fashion as any other device on the network To the extent that it cannot produce immediately the message will be stored in an internal buffer until it can be sent As other messages arrive at the CANX they also are put into an internal buffer and retransmitted as quickly as possible The internal buffers one for each side are FIFO buffers so that the messages for each side will be retransmitted in the order that they are received with respect to the other messages received on the same side Up to 100 messages can be held in the internal AMT buffers 5 1 2 Network Throughput Design Considerations The effect of the operations described above and the internal propagation delay inside the CANX approximately 75us as it performs the store and forward is that it may be possible to design a network with more traffic that the CANX can be expected to handle Ca
17. CANX Series 3 e Like the Series 3 the Series 4 has 8 position DIP switch block All 8 switches are defined and used e Series 4 unit is compatible with all CANopen baud rates These baud rates are fixed by setting the 8 position dip switch to the appropriate configuration Like Series 3 a remote mode exists which allows either side to set its baud rate based on the other side s BR in either fixed baud or autobaud e See Section 4 2 above for details 9 2 Terminating Resistors The Series 4 has an on board terminating resistor on each CAN connection that can be selectively included or excluded from the network circuit With jumpers W1 and or W3 in place the CANX puts 121 ohm resistor across the lines on sub network sides A and or See Figure 4 1and Figure 4 2 for the location of these jumpers 9 3 Field Programmable Updates The CANX Series 4 has its program held in flash memory which can be updated in the field Contact the factory for details 24 Western Reserve Controls WRC CANX xx Series 4 PUB 14 1 User s Manual 10 Frequently Asked Questions 1 Onwhat networks do the WRC CANX and work The WRC CANX and CANR function with DeviceNet CANopen J1939 SDS and other CAN 2 0 Part A and Part B networks If you don t see your network listed here contact WRC for more information on your network compatibility 2 What s the difference between WRC CANX xx and W
18. Drop Line Nodes N pgs Zero Drop Short Drops Terminator age Figure 6 1 Linear Topology Example 18 Western Reserve Controls WRC CANX xx Series 4 PUB 14 1 User s Manual Linear Bus Topology distance doubled Terminator Extender Tap N 2 Terminator E adm Drop Line 7 Nodes ae Zero Drop Short Drops Figure 6 2 Linear Topology with Double Distance Example Linear Bus Topology multiple Extenders Terminator Extender Tap Extender Terminator Nodes m um m H ae ni Drop Short Drops Figure 6 3 Linear Topology with Multiple Extenders Example 19 Western Reserve Controls WRC CANX xx Series 4 PUB 14 1 User s Manual Linear Bus Topology multiple extended drop lines Terminator Tap Terminator B zu Drop Line ii Extender 7 Nodes v Y Zero Drop Short Drops Qo Figure 6 4 Linear Topology with Multiple Extended Drop Lines Example Modified Star Topology multiple extended drop lines Host PLC Extender Figure 6 5 Star Topology with Multiple Drop Lines Example Western Reserve Controls PUB 14 1 WRC CANX xx Series 4 User s Manual T Accessories and Other CA
19. N Products The following components can be used with a WRC CANX CAN Bus Extender for replacements or spare parts Part WRC P N CANX DIN Link Connector CANX DN CK and Terminator Resistor CANX NEM Cable n a e rail 1 meter WRC 50022 Equivalent Mfr Part Number Phoenix Contact MSTB2 5 5 ST 5 08 AU Various manufacturers Mini Style Connector Examples Cable assy w female threads fem sockets Turck RKM 570 M 630 trunk line Turck RKM 571 M 630 drop line Cable assy w male threads male pins Turck RSM 570 M 630 trunk line Turck RSM 571 M 630 drop line Phoenix Contact NS 35 7 5 0801733 2 m Allen Bradley 199 DR1 1 m WRC also provides discrete and analog I O signal conditioning and multiplexing on DeviceNet as well as communication gateways See Table 7 1 on the next page 21 Western Reserve Controls WRC CANX xx Series 4 PUB 14 1 User s Manual Table 7 1 Additional WRC DeviceNet Products WRC Part Number DIN rail WRC 50022 Terminating resistor axial lead RM121DN Discrete block 4 channels 1782 JDB4 Analog Input block 4 channels 10 bit 1782 JDA4 DeviceNet to Serial I O Gateway 1782 JDC DeviceNet to Serial Gateway Enhanced 1782 JDCE DeviceNet to Serial I O Gateway 4 channels W5 JDC4 DeviceNet to Modbus Gateway 1782 JDM Discrete block 24 channels WRC1 JDB24 Discrete I O Analog Input block 24 DIO 32 WRC1 JDA
20. N rail mounted WRC CANX Switches preset for 9 6K baud rate NEM DN 1 extender with M18 connectors Comes in protective NEMA 4X box NEM 40K 1 extender with M1 8 connectors Comes in protective NEMA 4X box Switches preset for 40K baud rate 1 extender with M18 connectors Comes in protective NEMA 4X box DNET power wired from side A to side B no isolation Kit includes 2 extenders with M18 and fiber optic connectors For use DN HK DDN with multi mode fiber optic cable Kit includes 2 extenders with M18 and fiber optic connectors For use DF SM WRC CANR with single mode fiber optic cable DIN DF Kit includes 2 extenders with Phoenix connectors For use with multi mode fiber optic cable Open frame DIN rail mounted MTGKIT Mounting kit for DIN rail For use with CANX or CANR 25 Western Reserve Controls WRC CANX xx Series 4 PUB 14 1 User s Manual 4 Why does WRC offer CANX amp CANR extenders The WRC CANX R Extenders are a family of products that extend the communications cable lengths for DeviceNet J1939 CANopen and other CAN V2 0 Part A or Part B serial bus systems These repeaters serve to e extend a network beyond its absolute maximum length e g 500 meters for DeviceNet at the slowest speed implement a longer network for a given baud rate e g pushing a 500K baud network beyond 100 m for DeviceNet provide higher speed baud rates for a given network
21. RC CANR xx product families The primary difference between the two different extender families is the way in which the CAN messages travel The WRC CANX handles all message transfer internally while the WRC CANR sends the messages across a fiber link The WRC CANX xx family is a group of single unit CANbus extenders The unit receives a CAN message on one side and transmits it without processing or modifying the message on the other side It is one unit with two CANbus connectors one for each network side The WRC CANR xx is a set of two CANbus extenders The first unit receives CAN messages and transmits them over a fiber link to the other extender which receives them then reproduces the messages on the CANbus without processing or modifying them 3 Whatare all of these different models Which WRC or should choose We offer many different models of the CANX and CANR in order to meet a wide range of customer needs The following table provides descriptions of each available CANX and CANR model Table 10 1 CANX and CANR Models Product Type Model Description DIN C7 1 extender with Phoenix connectors Open frame DIN rail mounted Includes protective plexi glass cover DIN DN 1 extender with Phoenix connectors Open frame DIN rail mounted DINA0K 1 extender with Phoenix connectors Open frame DIN rail mounted Switches preset for 40K baud rate DIN960 1 extender with Phoenix connectors Open frame DI
22. RC CANX consumes 60 mA of current at 25 Vdc or 1 5 Watts typical See Section 3 Power is typically taken from the bus on each side and each side A and B requires power Power applied to the A Side powers the entire unit except the B Side isolated transceiver If isolation is not required for your application then the power line may be jumpered from side A to side B Care must be taken that the power supply is capable of handling the entire load on both sides of the CANX Western Reserve Controls WRC CANX xx Series 4 PUB 14 1 User s Manual 4 5 Network Cabling and Configuration This section provides general guidelines for connecting DeviceNet and SDS systems You can find detailed specifications in the appropriate ODVA DeviceNet and Honeywell SDS specifications 4 5 1 Cable Lengths The following provide cable length limits for DeviceNet and SDS systems Table 4 5 Network Maximum Lengths DeviceNet Baud Rate Trunk Line Length Drop Length Meters Feet Meters Feet Meters Feet 125 Kbits s 500m 1640 ft 6m 156m 512 ft 250 Kbits s 250m 820 ft 6m 78m 256 ft 500 Kbits s 100 m 328 ft 6m 39m 128 ft DeviceNet has a limit of 64 nodes per network for any baud rate The CANX does not count as an addressed device Table 4 6 Network Maximum Lengths SDS Trunk Line Length Drop Length No onu e maximum maximum Nodes 125 Kbits s 1500 250 Kbits s 600 500 Kbits s i 300 1 Mbits s 75 SDS has a limit of 32 nodes per netw
23. hoenix connectors for use with non NEMA enclosed units will be supplied with your order if you choose a model using these connectors e WRC CANRs use fiber optic receiver transceivers that are compatible with different fiber grades so long as they are terminated with ST fiber connectors 6 Atwhat baud rates do the WRC CANX and CANR function The WRC CANX and CANR function at baud rates of 9 6K 10K 20K 40K 50K 100K 125K 250K 500K 800K and 1M fixed and will auto detect the baud rate on DeviceNet The CANX and CANR are also capable of handling different baud rates on each side e g a network with a baud rate of 125K plugged into Network side A can communicate with through the CANX or CANR a network with a baud rate of 1M on Network side B 7 Does the WRC CANX or CANR require additional termination resistance on the data lines The WRC CANX or CANR functions as the beginning or ending of a new segment of the network With no power supplied to the network the resistance across the CAN data lines should be approximately 60 ohms two 120 ohm resistors in parallel one on each end of the network bus 26 Western Reserve Controls WRC CANX xx Series 4 PUB 14 1 User s Manual e The WRC CANX has two user selectable 121 ohm resistors on board Keeping the plastic jumpers which are installed on all units at the factory on W1 and W3 will keep these resistors in the circuit across the CAN data lines In this case the user needs on
24. ide A and B requires power Power applied to the A Side powers the entire unit except the B Side isolated transceiver If isolation is not required for your application then the power line may be jumpered from side A to side B Care must be taken that the power supply is capable of handling the entire load on both sides of the CANX 11 Is there a limit to the number of times a network can be extended using a WRC CANX or There is technical limit to the number of WRC CANXs or CANRs that be placed network The number of extenders in a network is generally dictated by the length limitations due to the operation baud rate of the network desired Also although the CANX and CANR have very small propagation delays their delay times add up when there are multiple units on one network For this reason the master device s EPR time should be adjusted to be greater than the message transmission time which includes the transmission time on the data lines plus the propagation delay of the CANXs or CANRs when adding several CANXs or CANRs to your network 12 How do I know how many WRC or CANRs my application will require While there is no set formula for determining the number of WRC CANXs or CANRs the length of the network you are trying to create is most likely the dictating factor in the answer to this question The lengths of drop and trunk lines must follow CANbus guidelines for the selected protocol A CANX o
25. isual status information to the user about the product and the DeviceNet network See Figure 4 1 Table 4 2 Table 4 3 and Table 4 4 Western Reserve Controls WRC CANX xx Series 4 PUB 14 1 User s Manual Table 4 2 Module Status LED labeled MS Device Operational WRC CANX is operating normally Advanced Memory Technology pasning Red Mimar Fauli buffers space exceeded o Red Unrecoverable Fault WRC CANX may be damaged Flashing Red Green Device Self Testing WRC CANX is in self test mode Table 4 3 Network Status LED s labeled NSA and NSB LED State Module Status WRC CANX has no power or device is not OFF No Power Not on line operating WRC CANX has not received a valid Flashing Green Idle message for 0 5 sec WRC CANX is waiting for a valid Fast Flashing Green Autobaud selection message to fix the baudrate Green On line WRC CANX is operating normally There is more traffic on the network than Flashing Red Flashing Red CAN controller buffer overflow the system can handle WRC CANX has detected an error that Critical link failure Bus Off makes it incapable of communicating on the link Table 4 4 Diagnostic Status LED s labeled DGN LED State Module Status Normaloperaion Normal Operation with power applied 4 4 Power Requirements The WRC CANX XX CAN Bus Extender subsystem is powered from the 11 25 Vdc provided by the DeviceNet network The W
26. ly to terminate the other end of each side of the bus with a 120 ohm resistor to insure correct termination on Network side A on one side of the CANX and Network side B on the other side of the CANX If your network is already terminated at the beginning and end of the bus net resistance of 60 ohms it will be necessary to take the W1 W3 jumpers off so that the network is not improperly terminated The WRC CANR has one user selectable 121 ohm resistor on board which is selected or deselected using the plastic jumper installed on all units at the factory on W1 With the jumper on this resistor remains in the circuit across the CAN data lines In this case the user needs only to terminate the other end of the bus with a 120 ohm resistor to insure correct termination If your network is already terminated at the beginning and end of the bus net resistance of 60 ohms it will be necessary to take the W1 jumper off so that the network is not improperly terminated gt It should also be noted that drop lines should not be terminated where they are connected to the main trunk line For a CANX or CANR in this position the jumper will have to be removed See the diagrams below for further clarification of proper network setup Host PLC W1 Jumper Installed W3 Jumper Installed Drop Line not terminated on trunk line side W1 Jumper not installed W3 Jumper Installed Figure 10 1 Sample WRC CANX Se
27. mory Technology AMT operation Shorter latency time compared to CANX series 3 Improved Reverse voltage protection and Can data lines noise immunity Jumper selectable terminating resistors on board the CANX 1 2 Features The WRC CANX has the following features Extends CAN Bus cable lengths trunk line or drop lines Allows operation at higher speeds for specific distances Expands the usable applications for CAN Bus systems Operates at 9 6K 10K 20K 40K 50K 100K 125K 250K 500K 800K and 1M baud Operates up to 1M baud for other CAN protocols No configurable parameters Automatic baud rate selection No address selection required Isolates the two sides of the bus 2500 volts Logically transparent to the Master and Slave devices on the bus DeviceNet SDS CANopen J1939 CAN V2 0 Part A and Part B compatible Powered from the 24Vdc supplied by bus network or the user Two mechanical packages DIN rail mount WRC CANX DIN Sealed NEMA 4X enclosure X WRC CANX NEM 5 pin pluggable connection for the DIN mount unit 5 pin round mini style connection for the NEMA mount unit Standard CAN chips manage bus error detection Standard CAN chips handle message bus contention Less than 100 usec latency 4 bi color red green status LED s CE Compliant for WRC CANX NEM xx versions EN 55011 Class A EN 50082 2 1994 1 3 Basic Operation There are two bus connections for each CANX referred to as Network A and Network B The C
28. ndependent bus line electrically The CANX as the first node in this new bus line and must be terminated and the last device on the line must also be terminated Some specifications for the terminating resistor are Table 4 7 Terminating Resistors DeviceNet SDS 121 120 1 metal film 296 1 4 watt 1 4 watt Important Per the DeviceNet and SDS specs do not terminate devices on drop lines An appropriate terminating resistor kit WRC part number RM121DN which satisfies both DeviceNet and SDS specs is included with your Extender Note The WRC CANX Series 4 family is configured at the factory with 2 internal terminating resistors on each network one for Network and one for Network B using jumpers W1 and W3 If these are used in a trunk line no other terminators should be placed at the CANX that end of the network Note If the CANX is used on a drop line the internal terminating resistor should be removed on Network A the drop line directly from the trunk line 11 Western Reserve Controls WRC CANX xx Series 4 PUB 14 1 User s Manual 4 5 3 DeviceNet Connection Wiring The supplied 5 pin CAN Bus connection plug accepts cable sizes from 12 AWG 24 AWG The maximum wire size 12 AWG has an area of 6530 circular mils and the smallest 24 AWG has an area of 3265 circular mils Network Connector Female Contacts 5 V red 4 CANH white 3 drain bare 2 CANL blue 1 2 3 4 5 1
29. ork for any baud rate The CANX does not count as an addressed device 4 5 2 Network Termination A CAN Bus system must be terminated at each end of the trunk line The host controller and the last device CAN Bus Extender or other DeviceNet node on the network section must always be terminated to eliminate reflections even if only two nodes are present Follow the information below when using a CANX The CANX Series 4 has built in terminators which can selectively included or omitted from the network To include the on board terminator on side A install jumper W1 or remove the W1 jumper if the 10 Western Reserve Controls WRC CANX xx Series 4 PUB 14 1 User s Manual on board terminator in not desired For the side B sub network install or remove jumper W3 The CANX is shipped from the factory with the jumpers installed Trunk line use For the purpose of network termination the CANX is treated as the last node on the section of the trunk network to which it is connected Therefore when a CANX is used directly in a trunk line it must be terminated on both the Network A and Network B sides You must also place a terminating resistor on the other end device of Network A and on the last device on Network B side of the trunk line Drop line use When CANX is used in a drop line the Network A side is toward the main trunk the Network A connection is not terminated In this configuration the Network B section is considered as an i
30. r CANR should be added in the network whenever you desire to extend the length of a drop or trunk line beyond the normal maximum allowed length Please refer to the WRC CANX or CANR User s Manual section Cable Lengths for more information on the allowed cable distances for each baud rate and network protocol 13 What do the LEDs on the WRC CANX or CANR tell me about how the unit s are behaving The Network LEDs on a CANX will be green and blinking slowly if a connection is established but no messages are being transmitted received They will be solid green when messages pass These same LEDs will be red if there is no connection The same diagnostics apply for the NSA LED of a CANR but the NSB LED of a CANR indicates the status of the remote unit and whether the fiber 28 Western Reserve Controls WRC CANX xx Series 4 PUB 14 1 User s Manual link is hooked up correctly blinking green with no messages solid green with messages or incorrectly red The MS LED gives the status of the unit If it is green the unit is operating normally If it is blinking red the unit is out of memory while solid red means the device has failed and may be need to be power cycled or be repaired Please refer the WRC CANX or CANR User s Manual and see the section on LED Operation Do WRC and extenders cause signal delays and what speed of messages can they handle The WRC CANX has a small propagation delay of approximately 810 6 while
31. re should be taken to design the network so that the amount of total traffic does not exceed the capabilities of the total system Each application and installation has its own requirements and configurations so a definitive formula would be very difficult to define However a good rule of thumb would be to set up the scan time for a network that includes a CANX that is no faster that twice the fastest scan time possible to achieve the desired communications that may be obtained without the CANX In the event that the network operation prevents all messages on one side from getting out before the buffer on that side fills subsequent messages will be lost The CANX will continue to process transmitting all stored messages and will accept new messages once room clears in the buffer The red LED labeled NSA or NSB will illuminate and will remain illuminated for 5 seconds after the buffer full condition clears 5 1 3 Fixed Operation Fixed baud rate operation has the specific advantage that it can be used in networks where all devices are autobaud only The baud rate is set by setting SW1 switch positions before powering up the A side of the CANX See Table 4 1 16 Western Reserve Controls WRC CANX xx Series 4 PUB 14 1 User s Manual 5 1 4 Autobaud Operation Autobaud is the method by which a device automatically determines the baud rate on the DeviceNet network and sets it s internal baud rate to match without the need for switches or
32. red to as Sub Network A and Sub Network B and the two sub nets are one logical network with isolation between them The CANX may be used to extend the maximum distance that a network can operate at any given speed That is a CANX may be used e to extend the network beyond its absolute maximum length e g 500 meters for DeviceNet at the slowest speed to implement a longer network for a given baud rate e g pushing a 500K baud network beyond 100 m for DeviceNet e to provide higher speed baud rates for a given network length e to extend the length of the drop cable e g longer drops than 6 m for DeviceNet e provide 2500V electrical isolation between the 2 sub nets The CAN Bus is connected to each side of the CANX and each side receives its power and signals from the Bus on its respective side Whenever a message is transmitted on the Bus to which CANX is connected CANX receives the message on the side where it was initiated and performs a store and forward of the message to the other side This action is performed for any valid CAN message independent of who generated it or to whom it is addressed The CANX is not addressed as a specific device on the Bus and cannot be interrogated by other nodes It is transparent to all other nodes on the bus 5 1 Application Notes To help insure ease of installation and reliable operation of your system the following guidelines should be followed CANX installation in your CAN network Yo
33. sfully performed The CAN Bus Extender is now operating on the network and is ready to repeat messages from either Network A or Network B Western Reserve Controls WRC CANX xx Series 4 PUB 14 1 User s Manual 3 General Specifications Product WRC CANX DIN and WRC CANX NEM CAN Bus Extender Series 4 Description Electrical extender to extend the permitted cable distances defined for CAN based network products Device Type Communications Extender Product Revision 4 1 DeviceNet Conformance Designed to conform to the ODVA DeviceNet Specification Version 2 0 Baud rate 9 6K 10K 20K 40K 50K 100K 125K 250K 500K 800K and 1M baud fixed or auto detect baud rate on DeviceNet Address selection Not applicable Bus Connection WRC CANX DIN Extender 5 pin pluggable header male pins Phoenix Contact MSTBA 2 5 5 G 5 08 AU CAN Bus Cable 5 contact plug female contacts Phoenix Contact MSTB 2 5 5 ST 5 08 AU included WRC CANX NEM Extender Woodhead 51354 female sockets female threads Woodhead 1R5006A17A120 male pins male threads CAN Bus Cable See accessories list Status Indicators Module Status green red bi color LED Network A Status green red bi color LED Network B Status green red bi color LED Diagnostic Data green red bi color LED Voltage Isolation 2500 V Maximum power Voltage 11 25 Network 110 mA 11 Vdc 60 mA 25 Vdc Network B 20 mA 11 Vdc 10 mA 25
34. t To quickly and easily install your CAN Bus Extender in your DeviceNet system follow the instructions below For more details see Section 4 To Install and Establish Communications Remove the CAN Bus Extender from the box and connect your CAN Bus cable to the 5 pin plugs supplied with CANX DIN or the mini style connectors user supplied according to wiring specifications for the CAN Bus you are using and described later in this manual Leave the DIP switches in the FF or all OPEN positions The DIP switches are set to autobaud both A and B sides from the first valid CAN message on either side Using on board jumpers W1 and W3 terminate each side of the CAN Bus network as appropriate This is especially critical at the higher baud rates The CANX does not differentiate between A side and B side from a functional perspective The CANX can be oriented with either side toward the Master Make sure that there is power on both network sides The CANX isolated power and signal Plug the CANX into your network The CAN Bus Extender will undergo its initialization sequence flashing the LED s After approximately 5 seconds the Module Status LED labeled MS will go on solid green and network LED s labeled NSA 5 will flash green Both Network A and B Status LED s NSA and NSB will go on solid once a valid CAN message is received into either side of the Extender and the baudrate auto detect has been succes
35. tup 27 Western Reserve Controls WRC CANX xx Series 4 PUB 14 1 User s Manual 8 How dol determine the location in my network at which might need WRC or CANR Drop Line The WRC CANX or CANR should be used in a drop line when you would like to extend the drop more than 6m Trunk Link The should be used in the main trunk line when you desire to extend a network beyond its maximum length e g 500 meters for DeviceNet at 125K baud rate or beyond 100 m for DeviceNet at 500K baud rate Differences in baud rate WRC CANX and CANR can pass communications from two different baud rates back and forth with each other e g Network A at 125K and Network B at 500K Isolation The and CANR can provide 2500V electrical isolation between 2 sub nets 9 Does the WRC CANX or CANR act as a node on the network No The WRC CANX and CANR are repeaters which remain completely invisible to the master device or PLC The unit does not have a MAC ID It will only pass messages through without modifying them and cannot generate its own messages 10 How much power does WRC CANX or CANR require and what is the best means of supplying it The WRC CANX and CANR should be powered with 11 25Vdc provided by the DeviceNet network or other DC power supply The WRC CANX and CANR Series 4 consume approximately 1 5W 60mA at 25Vdc Power is typically taken from the bus on each side and each s
36. u may install the Network A side or B Side of CANX toward the Bus Master The CANX takes its logic power from the A Side but you may power up the CANX from either side first There is approximately a 75 usec propagation delay of the message through the CANX In autobaud mode each side can autobaud from the other side or from the first message on its own side CANX is not a grounded device and the Bus shield is not connected electrically to the device Therefore follow appropriate wiring practices to eliminate noise and other problems 5 1 1 CANX Theory of Operation As described the CANX performs a store and forward operation on each message received The operation is described in this section 15 Western Reserve Controls WRC CANX xx Series 4 PUB 14 1 User s Manual The CANX will verify and accept consume on either network side any and all valid CAN messages The message will be momentarily stored internally and the CANX will immediately attempt to re send produce the message on the other side bus Because the other side of the CANX is a different bus electrically and from a data link perspective it will perform a negotiation session on that bus section to retransmit produce the message onto that section This action has the effect of doubling the overall number of total attempts to get onto the bus of each message This is the case because every message is reproduced independent of where the target node exists that is the C
37. x Series 4 User s Manual The WRC CANX XX has an 8 pole DIP switch e Switch positions 1 4 are used to set the Network A baud rate Switch positions 5 8 are used to set the Network B baud rate The baud rates can be set independently or one side can take its baud rate from the other side in the Remote setting The Autobaud detects from DeviceNet bauds For CANopen speeds select the fix baudrate setting When both the CANX units are set to all open switch positions remote remote it scans through DeviceNet baudrates Table 4 1 Baud Rate Settings for Switches Baud rate Local Position 1 Position 2 Position 3 Position 4 Meaning Remote Position 5 Position 6 Position 7 Position 8 125K CLOSED CLOSED CLOSED CLOSED Fixed 250K CLOSED CLOSED CLOSED OPEN Fixed 500K CLOSED CLOSED OPEN CLOSED Fixed Autobaud CLOSED CLOSED OPEN OPEN Supra ear oa 9 6K CLOSED OPEN CLOSED CLOSED Fixed 10K CLOSED OPEN CLOSED OPEN Fixed 20K CLOSED OPEN OPEN CLOSED Fixed 40K CLOSED OPEN OPEN OPEN Fixed 50K OPEN CLOSED CLOSED CLOSED Fixed 100K OPEN CLOSED CLOSED OPEN Fixed 800K OPEN CLOSED OPEN CLOSED Fixed 1M OPEN CLOSED OPEN OPEN Fixed Takes baud rate from the Remote OPEN OPEN OPEN OPEN 2 Autobaud from either side Autobaud ALL OTHER SWITCH POSITIONS Autobaud 4 3 LED Operation The WRC CANX XX Multiplexer has four 4 LED s that provide v
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