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CAN Breakout Box FAQ

Hardware: Industrial Communications>>CAN, Industrial Communications>>DeviceNet

Problem:
Frequently Asked Questions about the CAN Breakout Box.

Solution:
Frequently Asked Questions

The NI-CAN Hardware and Software Manual contains answers to many of the following questions and can be a good reference for further information.

What are the Physical and Environmental Specification of the CAN Breakout box?

  • Physical
    Dimensions...............................................8.079" W x 4.259" H x 2.066" D
    I/O connector.............................................7x 5-pin male 5.08mm Combicon, 7x 9-pin male D-SUB
    Weight.........................................................385g
  • Operating Environment
    Ambient temperature ..............................0 to 55 °C
    Relative humidity ...................................10 to 90%, noncondensing
    (Tested in accordance with IEC-60068-2-1, IEC-60068-2-2, IEC-60068-2-56.)
  • Storage Environment
    Ambient temperature ..............................–20 to 70 °C
    Relative humidity ...................................5 to 95%, noncondensing
    (Tested in accordance with IEC-60068-2-1, IEC-60068-2-2, IEC-60068-2-56.)

What is the voltage ratings of the CAN Breakout box?
The voltage rating is 8 to 30VDC and can be found on the sticker placed under the CAN Breakout box:



Where is the location/position of the termination resistor?
The physical position of the termination resistor is after the left DB9 connector.

Is there a way to mount the CAN breakout box?
Yes, you can use the DIN Rail Mounting Kit. This kit can be found on any of our Portable Data Acquisition product pages. The part number for the kit is 779689-01. The product page for one of our Portable Data Acquisition devices where you can find this kit is shown here : http://sine.ni.com/nips/cds/view/p/lang/en/nid/205709

Does the CAN breakout box require power?
The Breakout box itself does not require power to function. The power input is used to power PIN9 on the CAN connector.  PIN9 can be used to apply power on your CAN bus. Whether you need to power your bus or not depends entirely on your bus.  Please refer to your CAN devices/networks documentation to see if they require bus power.  You should NOT apply power to your breakout out if the bus is already powered.  To check this, you can connect all CAN devices/networks to the box.  If the LED lights up, your bus is already powered and you should not apply power.

Can I supply power if my bus is already powered on PIN9 from another source?
No. Since the power from the box is directly connected to PIN9, you could be applying two different supplies to the same line.  The power can be supplied from the power jack OR externally on the bus but NOT BOTH. 

When would I use 60Ω termination resistor instead of 120Ω?
60Ω termination may be required for very short cables and buses. For more information on proper CAN termination, see KnowledgeBase 3IABNOHS : Proper Termination for NI-CAN Hardware

What type of CAN physical layer is the Breakout box compatible with?
The Breakout box is compatible with High Speed, Low Speed and Single Wire CAN. 

Where can I find replacement connectors to make cables that fit in the top connectors of the CAN Breakout box?
7 connectors are included with the breakout box such that you can make your own cable that fit in the top connectors.  National Instruments does not currently sell these connectors seperately.  If you need to make additional or replacement cables, you will need to purchase these connectors from the manufacturer or an external vendor.  These connectors are COMBICON connectors from Phoenix Contact, and can be found from their website (http://www.phoenixcontact.com/ ).    There are two types of COMBICON connectors 5.0 mm and 5.08 mm.  The CAN breakout box comes populated with COMBICON connectors with 5.08 mm spacing. 

What are the safety specifications for the CAN Breakout box?
Safety

The NI-CAN hardware meets the requirements of the following standards
of safety for information technology equipment:
• IEC 60950-1, EN 60950-1
• UL 60950-1, CSA 60950-1

Note For UL and other safety certifications, refer to the product label, or visit our Product Certification Site, search by model number or product line, and click the
appropriate link in the Certification column.

Pollution Degree .....................................2
Maximum altitude...................................2,000 m
Indoor use only.

Electromagnetic Compatibility

This product is designed to meet the requirements of the following
standards of EMC for electrical equipment for measurement, control,
and laboratory use:
• EN 61326 EMC requirements; Minimum Immunity
• EN 55011 Emissions; Group 1, Class A
• CE, C-Tick, ICES, and FCC Part 15 Emissions; Class A

Note For full EMC compliance, operate this device according to product documentation.

CE Compliance

This product meets the essential requirements of applicable European
Directives, as amended for CE marking, as follows:
• 73/23/EEC; Low-Voltage Directive (safety)
• 89/336/EEC; Electromagnetic Compatibility Directive (EMC)

Note Refer to the Declaration of Conformity (DoC) for this product for any additional
regulatory compliance information. To obtain the DoC for this product, visit
ni.com/certification, search by model number or product line, and click the
appropriate link in the Certification column.

Waste Electrical and Electronic Equipment (WEEE)

EU Customers At the end of their life cycle, all products must be sent to a WEEE recycling
center. For more information about WEEE recycling centers and National Instruments
WEEE initiatives, visit our Product Life Cycle Website.



Related Links:
NI-CAN Hardware and Software Manual
KnowledgeBase 3IABNOHS : Proper Termination for NI-CAN Hardware

KnowledgeBase 44JG1HYW : CAN Cable Termination

KnowledgeBase 29K9J4P7 : Symptoms of Improper CAN Termination


Attachments:

BreakoutBoxLabel.PNG
BreakoutBoxDimensions.PNG






Report Date: 02/24/2009
Last Updated: 04/22/2014
Document ID: 4UNFMNQ7

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