WRC-CANR-DF-DN and WRC-CANR-DF-SM Series 4 CAN-Bus Fiber Optic Bus Extender User’s Manual Western Reserve Controls, Inc.
Western Reserve Controls PUB 14.
Western Reserve Controls PUB 14.2 WRC-CANR-DF-DN User’s Manual Series 4 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 14.2 Rev 4.01 April 2011 Copyright © 1998-2011 WRC Western Reserve Controls, Inc.
Western Reserve Controls PUB 14.2 WRC-CANR-DF-DN User’s Manual Series 4 TABLE OF CONTENTS 1. OVERVIEW ....................................................................................................................................................... 1 SERIES 4 SPECIFIC FEATURES ....................................................................................................................... 1 FEATURES ..............................................................................................
Western Reserve Controls PUB 14.2 WRC-CANR-DF-DN User’s Manual Series 4 LIST OF TABLES TABLE 4-1 MODULE STATUS LED (LABELED MS)........................................................................................................ 7 TABLE 4-2 LOCAL DEVICE’S NETWORK STATUS LEDS (LABELED NSA) ...................................................................... 7 TABLE 4-3 REMOTE DEVICE’S NETWORK STATUS LEDS (LABEL NSB).........................................................................
Westrn Reserve Controls PUB 14.1 1. WRC-CANR-DF-DN User’s Manual Overview The WRC-CANR-DF Fiber Optic CAN Bus Extender converts a copper cable medium CAN-Bus network to a fiber optic medium. The WRC-CANR-DF-DN uses multimode fiber obtic cable, while the WRC-CANR-DF-SM uses singlemode fiber optic cable. Both are always used in pairs and inserts a length of fiber media into the copper CAN Bus network.
Western Reserve Controls PUB 14.2 * * * * * * WRC-CANR-DF-DN User’s Manual Series 4 Up to 2.2 km fiber lengths CAN 2A and 2B, and remote frame, support Autobaud operation for DeviceNet baud rates Either unit in a pair can Autobaud from the other units defined baud rate Jumper-selectable terminating resistor on-board the CANR Eliminates the distinction between WRC’s earlier version Type 1 and Type 2 CANR’s 1.2.
Western Reserve Controls PUB 14.2 WRC-CANR-DF-DN User’s Manual Series 4 The CANR-DF 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. Fiber-optic extenders especially useful for outdoor applications Host PLC Up to 2.2 km Extender Extender Figure 1-1 Typical fiber optic bus extension application 1.4.
Western Reserve Controls PUB 14.2 2. WRC-CANR-DF-DN User’s Manual Series 4 Quick Start To quickly and easily install your CAN-Bus Fiber Optic Extenders in your DeviceNet system, follow the instructions below. For more details, see Section 4. 1. These units are used in pairs. You need two (2) CANR-DF units and two (2) 62.5/125, multi-mode fiber cable lengths, terminated with ST male connectors. 2.
Western Reserve Controls PUB 14.2 3. WRC-CANR-DF-DN User’s Manual Series 4 General Specifications Product: WRC-CANR-DF-DN and WRC-CANR-DF-SM, Series 4 CAN-Bus Extender and Fiber Optic Converter Description: Electrical Extender to extend the cable distances of CAN-based protocol products and convert the copper network to a fiber optic link. Device Type: Communications Extender Product Revision: 4.1 DeviceNet Conformance: Designed to conform to the ODVA DeviceNet Specification Volume I, Version 2.
Western Reserve Controls PUB 14.2 4. WRC-CANR-DF-DN User’s Manual Series 4 Hardware Installation and Configuration 4.1. Overview A CAN-Bus Extender is a single device connected to two parts of a single CAN-Bus network. The CANR-DF is a NEMA-4X enclosure and is panel mounted. NSA DeviceNet Male, Mini W1 DGN MS NETWORK A 2.27” ( 57,7 mm) ST Fiber Connectors --NET A- --NET B-1 2 3 4 5 6 7 8 SW1 OPEN NSB NETWORK B 5.11” (130 mm) Figure 4-1 WRC-CANR-DF-xx CAN-Bus Extender (2 per) 4.2.
Western Reserve Controls PUB 14.2 WRC-CANR-DF-DN User’s Manual Series 4 Table 4-1 Module Status LED (labeled MS) LED State Module Status Meaning OFF No Power There is no power through DeviceNet. Green Device Operational WRC-CANR is operating normally. Flashing Red Minor Fault Advanced Memory Technology (AMT) buffers space exceeded. Red Unrecoverable Fault WRC-CANR may be damaged. Flashing Red/Green Device Self-Testing WRC-CANR is in self-test mode.
Western Reserve Controls PUB 14.2 WRC-CANR-DF-DN User’s Manual Series 4 Table 4-4 Diagnostic Status LEDs (labeled DNG) LED State Module Status Meaning OFF Normal Normal operation. Green Fiber Link OK Serial link to fiber network operating. Red Time-out Flashing Red Communications error Unit has not received a serial message (status or can) from the fiber link. Internal FIFO stack has overflowed on the fiber link interface.
Western Reserve Controls PUB 14.2 WRC-CANR-DF-DN User’s Manual Series 4 Table 4-5 Baud Rate Settings for Switches Baud rate 125K 250K 500K Local Position 1 Position 2 Remote Position 5 Position 6 CLOSED CLOSED CLOSED CLOSED CLOSED CLOSED Position 3 Position 7 CLOSED CLOSED OPEN Position 4 Position 8 CLOSED OPEN CLOSED Autobaud CLOSED CLOSED OPEN OPEN 9.
Western Reserve Controls PUB 14.2 WRC-CANR-DF-DN User’s Manual Series 4 Table 4-6 Network Maximum Lengths - DeviceNet Baud Rate 125 Kbits/s 250 Kbits/s 500 Kbits/s Trunk Line Length Maximum Distance Meters Feet 500 m 1640 ft 250 m 820 ft 100 m 328 ft Drop Length Maximum Meters Feet 6m 20 ft 6m 20 ft 6m 20 ft Cumulative Meters Feet 156 m 512 ft. 78 m 256 ft. 39 m 128 ft. DeviceNet has a limit of 64 nodes per network for any baud rate.
Western Reserve Controls PUB 14.2 WRC-CANR-DF-DN User’s Manual Series 4 Some specifications for the terminating resistor are: Table 4-8 Terminating Resistors DeviceNet 121 ohm 1% metal film 1/4 watt SDS 120 ohm 2% 1/4 watt Important: Per the DeviceNet and SDS specs -- do not terminate devices on drop lines. 4.5.3. CAN-Bus Connection Wiring The CANR-DF uses the round, mini-style connector on the copper side A and standard ST connectors on the fiber side B.
Western Reserve Controls PUB 14.2 WRC-CANR-DF-DN User’s Manual Series 4 Figure 4-3 SDS Mini Connector Pin # 1 2 3 4 5 Function Drain V+ GND CAN_H CAN_L Wire color Bare Brown Blue Black White Table 4-10 SDS cable specifications 4.5.4. Alternate Connector Options Cable sets may be purchased from an appropriate vendor or custom-made. Turck supplies individual connectors that may be used to build custom DeviceNet or SDS copper cables.
Western Reserve Controls PUB 14.2 5. WRC-CANR-DF-DN User’s Manual Series 4 Operation Each CANR system receives CAN messages and then packs and transmits the messages over the fiber link to the other CANR, which produces the messages onto its CAN bus network. The CANR pair provides electrical isolation between the two CAN sub-networks. It has no CAN address and is logically transparent to the CAN network protocol. The CANR does not interpret nor act on the CAN messages.
Western Reserve Controls PUB 14.2 WRC-CANR-DF-DN User’s Manual Series 4 Linear Bus Topology - extended fiber drop Terminator Tap Terminator Drop Line Fiber Extender Nodes 2.2km Fiber Fiber Extender Zero Drop Short Drops Figure 5-1 CANR-DF on a drop line Linear Bus Topology - multiple fiber drops Terminator Taps Drop Line Terminator Fiber Extender Fiber Extender Nodes 2.
Western Reserve Controls PUB 14.2 6. WRC-CANR-DF-DN User’s Manual Series 4 Accessories and Other WRC Products The following components can be used with a CANR for replacements or spare parts, or as complementary devices as a part of your DeviceNet system. • Part WRC P/N Equivalent Mfr. Part Number CANX-NEM Cable n/a Various manufacturers’ Mini-Style Connector Examples: Cable assy.
Western Reserve Controls PUB 14.
Western Reserve Controls PUB 14.2 7. WRC-CANR-DF-DN User’s Manual Series 4 Troubleshooting This section identifies some of the common problem observed when commissioning or operating a CANR-DF Extender. Problem: DeviceNet devices will not communicate on the network Module Status LED is solid Green Network Status LEDs are flashing Green at ½ 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.
Western Reserve Controls PUB 14.2 WRC-CANR-DF-DN User’s Manual Series 4 Module Status LED is solid Green Network Status LED is flashing Green Possible Solutions: 1. CANR does not see CAN messages on the network. 2. Network does not have a terminating resistor. Add a 121 ohm resistor across the CAN_H and CAN_L signals at the first and last nodes. 3. Network cable is broken or disconnected. 4. Network cable is miswired.
Western Reserve Controls PUB 14.2 8. WRC-CANR-DF-DN User’s Manual Series 4 Summary of Changes to Series 4 from Rev 2 and Series 3 To facilitate implementation of the new Series 3 CANR products for customers that are currently users of the CANR Revision 2.xx products, this section summarizes the product changes from Rev 2 to Series 3. 8.1. DIP Switch Baud Rate Settings Several new options exist for setting the baud rate on the CANR Series 4.
Western Reserve Controls PUB 14.2 WRC-CANR-DF-DN User’s Manual Series 4 o A “heartbeat” feature has been added to the fiber link on Series 3 and 4 WRCCANR-DF-DN units. A heartbeat message is generated between the 2 CANR units when no CAN activity is present for approximately 0.5 sec, allowing each unit to confirm the status of the link. o The NSB LED indicates the health of the fiber connection for both normal traffic and the heartbeat. 8.5.
Western Reserve Controls PUB 14.2 9. WRC-CANR-DF-DN User’s Manual Series 4 Frequently Asked Questions 1. On what networks do the WRC CANX and CANR 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.
Western Reserve Controls PUB 14.2 WRC-CANR-DF-DN User’s Manual Series 4 4. Why does WRC offer CANX & 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: • 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.
Western Reserve Controls PUB 14.2 WRC-CANR-DF-DN User’s Manual Series 4 • 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.
Western Reserve Controls PUB 14.2 WRC-CANR-DF-DN User’s Manual Series 4 8. How do I determine the location in my network at which I might need a WRC CANX 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 CANX or CANR should be used in the main trunk line when you desire to extend a network beyond its maximum length (e.g.
Western Reserve Controls PUB 14.2 WRC-CANR-DF-DN User’s Manual Series 4 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. 14.
Western Reserve Controls PUB 14.2 WRC-CANR-DF-DN User’s Manual Series 4 18. 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. 19. How are field programming updates accomplished? In the event that your WRC CANX or CANR is in need of an update, contact WRC.
