National Instruments NI 9853 - Manuals

© National Instruments Corp. 5 NI 9853 Operating Instructions one or both of the COM pins. Each port also has an optional shield pin, SHLD, that can be connected to a shielded CAN cable. Connecting SHLD may improve signal integrity and EMC performance in a noisy environment. CAN0 of the NI 9853 is i...

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 6789 12345

NI 9853 Operating Instructions 8 ni.com CAN Bus Topology and Termination 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 connection known as a “stub.” The pair of signal wires, CAN_H and CAN_L ...

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 example of the connection of CAN0 of the NI 9853 directly to one CAN node, and CAN1 directly to another CAN node. CAN1 requires an e...

NI 9853 Operating Instructions 12 ni.com Cabling Requirements for NI 9853 This section deals with cabling specifications, termination resistors, cable lengths, and the number of CAN nodes that can exist in a system. Cable Specifications Cables should meet the physical medium requirements specified i...

© National Instruments Corp. 13 NI 9853 Operating Instructions Termination Resistors The termination resistors (R t ) should match the nominal impedance of the CAN cable, and therefore comply with the values in Table 4. Cable Lengths The allowable cable length is affected by the characteristics of t...

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 network. 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 connec...

NI 9853 Operating Instructions 16 ni.com Sleep Mode (CompactRIO Only) You can enable sleep mode for the CompactRIO system in software. In sleep mode, the system consumes less power and may dissipate less heat. Typically, when a system is in sleep mode, you cannot communicate with the modules. Refer ...

© National Instruments Corp. 17 NI 9853 Operating Instructions Specifications The following specifications are typical for the range – 40 to 70 °Cunless otherwise noted. High-Speed CAN Characteristics Transceiver ........................................ Philips TJA1041 Max baud rate ...................

NI 9853 Operating Instructions 18 ni.com Power Requirements Power consumption from chassis Active mode Transmitting ......................... 625 mW maxReceiving ............................. 400 mW max Sleep mode ................................. 25 μ W max Thermal dissipation (at 70 °C) Active mod...

© National Instruments Corp. 19 NI 9853 Operating Instructions Safety Maximum Voltage 1 Connect only voltages that are within these limits. Port-to-COM ..................................... –27 to +40 VDC max, Measurement Category I Measurement Category I is for measurements performed on circuits no...

NI 9853 Operating Instructions 20 ni.com Isolation Voltages Port-to-port Withstand.................................... 500 V rms , verified by a dielectric withstand test, 5 s Continuous ................................. 60 VDC, Measurement Category I Port-to-earth ground Withstand.....................

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

NI 9853 Operating Instructions 22 ni.com Environmental CompactRIO modules are intended for indoor use only. For outdoor use, mount the CompactRIO system in a suitably rated enclosure. Refer to the installation instructions for the chassis you are using for more information about meeting these specif...

© 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 Compati...

NI 9853 Operating Instructions 24 ni.com CE Compliance This product meets the essential requirements of applicable European Directives, as amended for CE marking, as follows: • 2006/95/EC; Low-Voltage Directive (safety) • 2004/108/EC; Electromagnetic Compatibility Directive (EMC) Note Refer to the D...

© National Instruments Corp. 25 NI 9853 Operating Instructions For additional environmental information, refer to the NI and the Environment Web page at ni.com/environment . This page contains the environmental regulations and directives with which NI complies, as well as other environmental informa...

NI 9853 Operating Instructions 26 ni.com National Instruments Contact Information National Instruments corporate headquarters is located at 11500 North Mopac Expressway, Austin, Texas, 78759-3504. National Instruments also has offices located around the world to help address your support needs. For ...