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CANKey - CAN USB Adaptor

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Product Description

CANKey is a compact CAN USB adaptor designed for CAN bus communication used in networks with a large number of nodes that require communication over large distances. Applications such as building and industrial automation require reliable and robust communication as well the ability to operate without extra infrastructure such as repeaters and hubs.

 

CAN communication offers excellent reliability and flexibility without costly requirements found in Ethernet based deployments. Lightweight protocols that operate over CAN are excellent for sensor data networks that require high reliability and communicate infrequent small data packets.

 

The CANKey unit designed by SMT is capable of transmission rates as low as 10 kBit/s allowing communication distances up to 1000 meters over CAT5 cable. At this communication rate, branches with no terminations are possible making the CAN network topology for building and industrial applications simplistic and reliable. 

 

Click to view product datasheet

Applications

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  • Building Automation Systems
  • Industrial Control Data Networks
  • Automotive Systems
  • HVAC Controls

Features

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  • USB 2.0 Compliant
  • USB HID Compliant for easy configuration on various platforms
  • CAN bus connects to RJ45 port allowing usage of CAT5 cabling for long distance communication and usage of standard networking crimp/termination hardware as compared to RS232 type interfaces
  • RJ45 port supports two CAN bus branches
  • Port for external power injection. Voltage drop due to long cable routes and large number of devices often requires the bus to be powered by a higher voltage.
  • Switch to allow the bus to be powered by USB power or external injected power. Useful for small networks or for configuring a single device.
  • High input impedance supports up to 256 nodes
  • ISO 11898 compatible
  • Short circuit protection on all outputs
  • Supports transmission rates from 10 kBits/s to 125 kBits/s
  • Communication distance up to 1000 meters (depending on topology and baud rate)
  • Terminations are not required and branches are permitted at lower baud rates
  • - LEDs on Tx, Rx and USB buffer size help with troubleshooting and diagnosing faulty/damaged cabling issues.

Recommended Cable Types

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  • Outdoor environments: Hyperline Cable: UTP2-C5E-SOLID-OUTDOOR-40-500

  • Indoor applications: Standard CAT5E cable

Network Topologies

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The following topologies can be used when using a CAN bus network:

 

Star: Each node is connected together in one common place. This connection does not require a hub or any smart routing device. The bus locations simply need to be electrically connected.

 

Bus: Nodes are connected in series with each other forming a continuous bus with incoming and outgoing CAN ports. Wiring of the dataloggers is shown in Figure 1. 120 ohm terminations may be required at the end of the bus.

 

Wireless: Hybrid CAN/Wireless nodes can serve as a coordinator to connect other wireless nodes.

 

Combination: A combination of star, bus and wireless networks can be combined as shown above. Install 120 ohm resisters if lengths are long and CAN communication errors are observed.

CANKey is a compact CAN USB adaptor designed for CAN bus communication used in networks with a large number of nodes that require communication over large distances. Applications such as building and industrial automation require reliable and robust communication as well the ability to operate without extra infrastructure such as repeaters and hubs.
 
CAN communication offers excellent reliability and flexibility without costly requirements found in Ethernet based deployments. Lightweight protocols that operate over CAN are excellent for sensor data networks that require high reliability and communicate infrequent small data packets.
 
The CANKey unit designed by SMT is capable of transmission rates as low as 10 kBit/s allowing communication distances up to 1000 meters over CAT5 cable. At this communication rate, branches with no terminations are possible making the CAN network topology for building and industrial applications simplistic and reliable. 
 
Click to view product datasheet

CANKey - CAN USB Adaptor

    • Building Automation Systems
    • Industrial Control Data Networks
    • Automotive Systems
    • HVAC Controls
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