WRC-CANR-DF-DN Series 3 CAN-Bus Fiber Optic Bus Extender User’s Manual W estern Reserve Controls, Inc.
Western Reserve Controls PUB 14.1 WRC-CANR-DF-DN User’s Manual Series 3 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 3.00 March 2003 Copyright © 1998-2003 WRC Western Reserve Controls, Inc.
Western Reserve Controls PUB 14.1 WRC-CANR-DF-DN User’s Manual Series 3 TABLE OF CONTENTS 1. 1.1. 1.2. 1.3. 1.4. OVERVIEW ............................................................................................................................................................................ 1 SERIES 3 SPECIFIC FEATURES ..........................................................................................................................................1 FEATURES....................................
Western Reserve Controls PUB 14.1 WRC-CANR-DF-DN User’s Manual Series 3 LIST OF TABLES TABLE 4-1 M ODULE 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 is always used in pairs and, along with the fiber optic cable set, inserts a length of fiber media into the copper CAN Bus network. The primary purposes of this type of configuration is to extend the maximum length defined for one continuous network cable bus up to 2.
Western Reserve Controls PUB 14.1 WRC-CANR-DF-DN User’s Manual Series 3 • Jumper-selectable terminating resistor on-board the CANX • Increased message internal buffers – Automatic Memory Technology (AMT) operation • Eliminates the distinction between WRC’s earlier version Type 1 and Type 2 CANR’s 1.2.
Western Reserve Controls PUB 14.1 WRC-CANR-DF-DN User’s Manual Series 3 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. Reference Documents The following documents are referenced in this User’s Manual • ODVA DeviceNet Specification Volume I, Release 2.
Western Reserve Controls PUB 14.1 2. WRC-CANR-DF-DN User’s Manual Series 3 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 14.1 3. WRC-CANR-DF-DN User’s Manual Series 3 General Specifications Product: WRC-CANR-DF-DN, Series 3 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: 3.?? DeviceNet Conformance: Designed to conform to the ODVA DeviceNet Specification Volume I, Version 2.
Western Reserve Controls PUB 14.1 4. WRC-CANR-DF-DN User’s Manual Series 3 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 DGN MS W1 NETWORK A 2.27” ( 57,7 mm) DeviceNet Female, Mini --NET A- --NET B-1 2 3 4 5 6 7 8 SW1 OPEN W2 NSB NETWORK B 5.11” (130 mm) Figure 4-1 WRC-CANR-DF-DN CAN-Bus Extender 4.2.
Western Reserve Controls PUB 14.1 WRC-CANR-DF-DN User’s Manual Series 3 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-CANX is operating normally. Flashing Red Minor Fault Advanced Memory Technology (AMT) buffers space exceeded. Red Unrecoverable Fault WRC-CANX may be damaged. Flashing Red/Green Device Self-Testing WRC-CANX is in self-test mode.
Western Reserve Controls PUB 14.1 WRC-CANR-DF-DN User’s Manual Series 3 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 from the fiber link. Internal FIFO stack has overflowed on the fiber link interface.
Western Reserve Controls PUB 14.1 WRC-CANR-DF-DN User’s Manual Series 3 4.4. Power Requirements The WRC-CANR-DF-DN CAN-Bus Extender subsystem is powered from the 11-25 Vdc provided by the DeviceNet network. The WRC-CANR-DF-DN consumes 70 mA of current at 24 Vdc, or 1.8 Watts, typical. See Section 3. 4.5. CAN Network Cabling and Configuration This section provides general guidelines for connecting DeviceNet and SDS systems.
Western Reserve Controls PUB 14.1 WRC-CANR-DF-DN User’s Manual Series 3 A CAN-Bus system must be terminated at each end of a copper trunk line. The host controller and the last node device or WRC CAN-Bus Extender on the network must always be terminated to match impedance and eliminate reflections, even if only two nodes are present. Follow the information below when using a CANR-DF. The CANR Series 3 has a built-in terminator which can selectively included or omitted from the network.
Western Reserve Controls PUB 14.
Western Reserve Controls PUB 14.1 WRC-CANR-DF-DN User’s Manual Series 3 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 14.1 5. WRC-CANR-DF-DN User’s Manual Series 3 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 14.1 WRC-CANR-DF-DN User’s Manual Series 3 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 14.1 6. WRC-CANR-DF-DN User’s Manual Series 3 Accessories and Other WRC Products The following components can be used with a JDxx 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 14.1 7. WRC-CANR-DF-DN User’s Manual Series 3 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 Possible Solutions: 1. 2. 3. 4. transmissions have been received by the CANX for 0.5 seconds. Network cables are broken or disconnected.
Western Reserve Controls PUB 14.1 WRC-CANR-DF-DN User’s Manual Series 3 Problem: Device will not communicate on the network 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 14.1 8. WRC-CANR-DF-DN User’s Manual Series 3 Summary of Changes to Series 3 from Rev 2 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 3. • The Series 3 has an 8-position DIP switch block.
Western Reserve Controls PUB 14.1 WRC-CANR-DF-DN User’s Manual Series 3 o A “heartbeat” feature has been added to the fiber link. 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. 8.6. Enhanced CAN Support The CANR now supports CAN 2.0 Part B, as well as Part A.
