Data Sheet EXTEND-A-BUS Series Fieldbus Extender for DeviceNet • Fibre optic or coaxial cabling • Star, bus or distributed-star topology • Variable data rates up to 500 kbps • Low-voltage AC- or DC-powered • Panel-mount or DIN-rail mount • CE Mark • RoHS compliant • Extends the length of DeviceNet networks up to 6 km • Fully DeviceNet compliant PRODUCT OVERVIEW The backbone side of the EXTEND-A-BUS must The EXTEND-A-BUS Series can extend DeviceNet ® adhere to standard ARCNET cabling rules. up to six kilometers — linking individual DeviceNet Companion AI ARCNET active hubs are available for subnets together into a single larger network. extending the backbone cabling. Hubs are cascaded to Each EXTEND-A-BUS unit creates a DeviceNet subnet and achieve the maximum distance: up to 6 km when using at least two units are needed to link subnets together. The coaxial cabling and ten active hubs or up to 4.8 km when data rate on each subnet can differ from those of other using a fibre optic backbone and two active hubs. subnets. DeviceNet identifiers or MAC IDs cannot be duplicated on any of the subnets. Each EXTEND-A-BUS pair is best viewed as an extension cord. A unit does not consume a permanent MAC ID, therefore it is transparent to the network. TD960801-0DB Page 1 Data Sheet EXTEND-A-BUS Series Network Diagrams Figure 1. Appropriate terminators are required at the ends of both the coaxial cable backbone and CAN subnets. Figure 2. A 62.5/125 μm duplex fibre optic cable is used on the -FOG model up to a maximum of 1830 meters. Figure 1. Figure 2. Figure 3. A maximum of eight bridges can occupy one coaxial backbone segment before an active hub is required. Use BNC “Tees” and terminators when making connections. One of each is included in the -CXB model. Figure 3. Figure 3. By using two AI3-CXS hubs, a distributed start topology is achieved. Note that the hub-to- hub distance can be a maximum of 610 m when using coaxial cable and that no terminators are used at the AI3 ports. Figure 4. Page2 TD960801-0DB Data Sheet EXTEND-A-BUS Series Mechanical Power Diagrams + + 0Vdc DCPowered RedundantDCPowered + 0Vdc 0Vdc ACPowered ACPoweredwithGroundedSecondary ACPoweredwithBatteryBackup Page3 TD960801-0DB Data Sheet EXTEND-A-BUS Series Specifications Electrical DC AC Input voltage 10–36 Volts 8–24 Volts Input power 4 W 4 VA Input frequency N/A 47–63 Hz Environmental Operating temperature 0°C to +60°C Storage temperature –40°C to +85°C Functionality Data latency 1 ms typical per bridge pair Regulatory Compliance CE Mark; CFR 47, Part 15 Class A DeviceNet Port Connection Page4 TD960801-0DB Data Sheet EXTEND-A-BUS Series Port Specifications DeviceNet Port Backbone Port Compliance DeviceNet ARCNET Volume 1, Release 2.0 ANSI/ATA 878.1 Data rate 125 kbps, 250 kbps, 2.5 Mbps 500 kbps selectable LEDs CAN status Link status Module status/network status Reconfiguration status/activity status Transceivers Optically-isolated 82C251 -CXB model: transformer-coupled -FOG model: 850 nm duplex fibre optic Cable DeviceNet Thick -CXB model: RG-62/u coaxial -FOG model: 62.5/125 μm duplex fibre optic Connectors 5 position -CXB model: BNC ™ Open-pluggable -FOG model: ST Maximum segment 125 kbps: 500 m (1640 ft) -CXB model: 305 m (1000 ft) or subnet distance 250 kbps: 250 m (820 ft) -FOG model: 1830 m (6000 ft) 500 kbps: 100 m (328 ft) (optical power budget: 10.4 dB) Maximum number of 64 -CXB model: 8 nodes per segment -FOG model: N/A Terminating resistor 121 ohms -CXB model: 93 ohms -FOG model: N/A Page5 TD960801-0DB Data Sheet EXTEND-A-BUS Series Ordering Information Bus Extenders Model Description EB/DNET-CXB EXTEND-A-BUS for DeviceNet with coaxial bus backbone EB/DNET-FOG EXTEND-A-BUS for DeviceNet with fibre optic backbone Accessories Model Description AI-XFMR Wall-mount plug-in transformer, 120 VAC (nom) input/24 VAC (nom) output AI-XFMR-E Wall-mount plug-in transformer, 230 VAC (nom) input/24 VAC (nom) output AI-DIN DIN-rail mounting kit BNC-T BNC “T” connector BNC-TER 93 ohm BNC terminator Contemporary Controls, ARC Control, ARC DETECT, EXTEND-A-BUS and CTRLink are registered trademarks or trademarks of Contemporary Control Systems, Inc. Specifications are subject to change without notice. Other product names may be trademarks or registered trademarks of their respective companies. © Copyright 2007 Contemporary Control Systems, Inc. www.ccontrols.com Contemporary Control Systems, Inc. 2431 Curtiss Street Downers Grove, Illinois 60515 USA Telephone (630) 963-7070 Fax (630) 963-0109 TD960801-0DB Page6 November2007