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National Instruments NI 9853 manual

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Table of contents for the manual

  • Page 1

    OPERATING INSTRUCTIONS NI 9853 2-Port, High-Speed CAN Module[...]

  • Page 2

    NI 9853 Operating Instructions 2 ni.com These operating instructions desc ribe ho w to use the Natio nal Instruments (NI) 9853 module. F o r information about installing, configuring, and programming your system, refer to your system documentation. The NI 9853 module requires the NI 9853 software to be installed. The latest version of the NI 985 3 [...]

  • Page 3

    © National Instruments Corp. 3 NI 9853 Operating Instructions Safety Guidelines fo r Hazardous Loca tions The NI 9853 is suitable for use in Cl ass I, Division 2, Groups A, B, C, D, T4 hazardous locations; Clas s I, Zone 2, AEx nA II T4 and Ex nA II T4 hazardous locations ; and nonhazardous locations only . Follo w these guidelines if you ar e ins[...]

  • Page 4

    NI 9853 Operating Instructions 4 ni.com Caution For Zone 2 applications, install a protection device between the CAN signals and the NI 9853 CAN pins. The de vice must pre v ent the CAN Port-to-COM voltage from e xceeding 55 V if there is a transient ov ervoltage condition. Special Conditions fo r Safe Use in Europe This equipment has been evalua t[...]

  • Page 5

    © National Instruments Corp. 5 NI 9853 Operating Instructions one or both of the COM pins. Each port also has an o ptional shield pin, SHLD, that can be connect ed to a shielded CAN cable. Connecting SHLD may impro ve signa l integrity and EMC performance in a noisy en vironment. CAN0 of the NI 9853 is internally po wered, and therefore requires n[...]

  • Page 6

    NI 9853 Operating Instructions 6 ni.com Table 1. Pin Assignments for CAN0 Connector Pin Signal 1 No Connection (NC) 2 CAN_L 3 COM 4 NC 5 SHLD 6 COM 7 CAN_H 8 NC 9 NC 6 7 8 9 1 2 3 4 5[...]

  • Page 7

    © National Instruments Corp. 7 NI 9853 Operating Instructions Table 2. Pin Assignments for CAN1 Connector Pin Signal 1 No Connection (NC) 2 CAN_L 3 COM 4 NC 5 SHLD 6 COM 7 CAN_H 8 NC 9 V SUP 6 7 8 9 1 2 3 4 5[...]

  • Page 8

    NI 9853 Operating Instructions 8 ni.com CAN Bus T opology and T e rmination A CAN bus consists of two or more CAN nodes cabled together . The CAN_H and CAN_L pins of each node are connected to the main CAN bus cable through a short con nection kno wn as a “stub . ” The pair of signal wires, CAN_H and CAN_L constitutes a transmission line. If th[...]

  • Page 9

    © National Instruments Corp. 9 NI 9853 Operating Instructions Figure 1. CAN Bus T opology and T ermination Resistor Locati ons CAN Node CAN Node CAN Node R t R t CAN Node CAN_H CAN_L CAN_H CAN_L CAN_H CAN_L CAN_H CAN_L Bus Cable Length Stub Length[...]

  • Page 10

    NI 9853 Operating Instructions 10 ni.com Connecting a CAN Bus to the NI 9853 Each port of the NI 9853 can be connected to any location on a CAN bus. Figure 2 shows one exam ple of the con nection of CAN0 of the NI 9853 directly to one C AN node, and CAN1 directly to another CAN node. CAN1 requires an external power sup ply on the CAN bus.[...]

  • Page 11

    © National Instruments Corp. 11 NI 9853 Operating Instructions Figure 2. Connecting Both Ports of th e NI 9853 to CAN Buses CAN1 CAN Device CAN0 NI 9853 R t CAN Cable (With Optional Shield) (SHLD) CAN_H CAN_L V sup COM R t (SHLD) CAN_H CAN_L V sup COM CAN Device R t CAN Cable (With Optional Shield) (SHLD) CAN_H CAN_L V sup COM R t (SHLD) CAN_H CAN[...]

  • Page 12

    NI 9853 Operating Instructions 12 ni.com Cabling Requirements for NI 9853 This section deals wi th cabling specif icatio ns, termination resistors, cable lengths, and the number of CAN nodes that can exist in a system. Cable Specifications Cables should meet th e physical medium re quirements specified in ISO 11898, sho wn in T able 3. Beld en cabl[...]

  • Page 13

    © National Instruments Corp. 13 NI 9853 Operating Instructions T ermination Resistors The termination resistors (R t ) should match the nominal impedance of the CAN cable, and therefore comply wit h the v alues in T able 4. Cable Lengths The allo wabl e cable length is af fected by the chara cteristics of the cabling and the desired bit transmis s[...]

  • Page 14

    NI 9853 Operating Instructions 14 ni.com Number of CAN Nodes The maximum number of nodes depends on the electrical characteristics of the nodes on the ne twor k. If all of the nodes meet the requirements of ISO 11898, at least 30 nodes may be connected to the bus. Higher numbers of nodes may be connected if the electrical characteristics of th e no[...]

  • Page 15

    © National Instruments Corp. 15 NI 9853 Operating Instructions Figure 3. NI 9853 Hardware Overview Rx Tx CAN T r ansceiver +5 V_ISO +5 V GND COM CAN_H CAN_L +5 V Reg Rx Tx Ext Pwr Supply CAN Controller Rx Tx CAN Controller CAN_H CAN_L CAN T r ansceiver Rx Tx COM V sup CAN0 CAN1 + _ Iso Pwr[...]

  • Page 16

    NI 9853 Operating Instructions 16 ni.com Sleep Mode (CompactRIO Only) Y ou can enable sleep mode fo r the CompactRIO system in software. In sleep mode, the syst em consumes less power and may dissipate less heat. T ypically , when a system is in sleep mode, you cannot communicate with th e modules. Refer to the Spec ifications section for more info[...]

  • Page 17

    © National Instruments Corp. 17 NI 9853 Operating Instructions Specifications The follo wing spec ificat ions are typical for the range – 40 to 70 °C unless otherwise noted. High-Speed CAN Characteristics T ransceiv er .......... ........... ........... ........ Philips TJ A 1041 Max baud rate ............ ........... ........... . 1 Mbps CAN_H[...]

  • Page 18

    NI 9853 Operating Instructions 18 ni.com Power Requirements Power consumption from chassis Activ e mode T ransmitting ............. ............ 625 mW max Receiving ........ ........... .......... 400 mW max Sleep mode . ......... ........... ......... ... 25 μ W max Thermal dissipation (at 70 °C) Active mode ........ ......... ........... ... 1[...]

  • Page 19

    © National Instruments Corp. 19 NI 9853 Operating Instructions Safety Maximum Voltage 1 Connect only v oltages that are wi thin these limits. Port-to-COM ....... ...................... ........ –27 to +40 VDC max, Measurement Category I Measurement Cate gory I is f or measurements performed on circuits not directly connected to the electrical di[...]

  • Page 20

    NI 9853 Operating Instructions 20 ni.com Isolation Voltages Port-to-port W ithstand .......... ............ ......... ..... 500 V rms , ver ifie d by a dielectric withstand test, 5 s Continuous .......... ......... ........... ... 60 VDC, Measurement Category I Port-to-earth ground W ithstand .......... ............ ......... ..... 500 V rms , ver [...]

  • Page 21

    © National Instruments Corp. 21 NI 9853 Operating Instructions Note For UL and other safety certif ications, refer to the product label, or vi sit ni.com/certification , search by model number or pro duct line, and click the appropriate link in the Certification column. Hazardous Locations U.S. (UL) ............ ......... ........... .......... Cl[...]

  • Page 22

    NI 9853 Operating Instructions 22 ni.com Environmental CompactRIO mod ules are inte nded for indoor u se only . F or outdoor use, mount the CompactRIO system in a suitably rated enclosure. Refer to the installa tion instructions for the chassis you are using for more information a bout meeting these specif ications. Operating temperature ..........[...]

  • Page 23

    © National Instruments Corp. 23 NI 9853 Operating Instructions Operating shock (IEC 60068-2-27)........... ........... ........ 30 g, 11 ms half sine, 50 g, 3 ms half sine, 18 shocks at 6 orientations Operating vibration, sinusoidal (IEC 60068-2-6) .... .......... 5 g, 10 to 500 Hz Electromagnetic Compatibility This product is designed to meet the[...]

  • Page 24

    NI 9853 Operating Instructions 24 ni.com CE Compliance This product meets the essentia l requirements of applicable European Directi ves, as amended for CE marking, as follo ws: • 2006/95/EC; Low-V oltage Directi ve (safety) • 2004/108/EC; Electromagneti c Compatibility Directive (EMC) Note Refer to the Declaration of Co nformity (DoC) for this[...]

  • Page 25

    © National Instruments Corp. 25 NI 9853 Operating Instructions For additional en vironmental information, refer to the NI and the Environment W eb page at ni.com/environment . This page contains the en vironmental regulat ions and directi v es with which NI complies, as well as othe r en vironmental information not included in this document. Waste[...]

  • Page 26

    NI 9853 Operating Instructions 26 ni.com National Instruments Contact Information National Instruments corporate headquarters is located at 11500 North Mopac Expressway , Austin, T exas, 78759-3504. National Instruments also has of fi ces located around the world to help address your support needs. F or telephone support in the United States, cr ea[...]

  • Page 27

    © National Instruments Corp. 27 NI 9853 Operating Instructions South Africa 27 0 11 805 8197, Spain 34 91 640 0085, Sweden 46 (0) 8 587 895 00, Switzerland 41 56 2005151, T aiwan 886 02 2377 2222, Thailand 662 278 6777, T urk ey 90 212 279 3031, United Kingdom 44 (0) 1635 523545[...]

  • Page 28

    © 2006–2008 Nati onal Instruments Corp. All rights reserved. 371453D-01 Jun08 National Instruments, NI, n i.com, and LabVIEW are trademarks of National Instruments C orporation. Refer to the Terms of Use section on ni.com /legal for more informat ion about National Inst ruments trademarks. Other product and company names ment ioned herein are tr[...]